./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd51e6da-de6f-47f3-af98-dda006f64459/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd51e6da-de6f-47f3-af98-dda006f64459/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd51e6da-de6f-47f3-af98-dda006f64459/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd51e6da-de6f-47f3-af98-dda006f64459/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd51e6da-de6f-47f3-af98-dda006f64459/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd51e6da-de6f-47f3-af98-dda006f64459/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a72b3b3683b5d2b2d35965fc1a3189152678e29fe154c9fbeb2d06d1447980e3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:12:53,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:12:53,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:12:53,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:12:53,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:12:53,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:12:53,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:12:53,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:12:53,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:12:53,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:12:53,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:12:53,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:12:53,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:12:53,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:12:53,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:12:53,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:12:53,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:12:53,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:12:53,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:12:53,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:12:53,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:12:53,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:12:53,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:12:53,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:12:53,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:12:53,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:12:53,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:12:53,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:12:53,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:12:53,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:12:53,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:12:53,175 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:12:53,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:12:53,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:12:53,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:12:53,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:12:53,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:12:53,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:12:53,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:12:53,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:12:53,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:12:53,186 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd51e6da-de6f-47f3-af98-dda006f64459/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:12:53,235 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:12:53,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:12:53,236 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:12:53,236 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:12:53,237 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:12:53,237 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:12:53,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:12:53,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:12:53,239 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:12:53,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:12:53,241 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:12:53,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:12:53,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:12:53,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:12:53,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:12:53,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:12:53,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:12:53,243 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:12:53,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:12:53,243 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:12:53,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:12:53,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:12:53,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:12:53,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:12:53,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:12:53,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:12:53,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:12:53,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:12:53,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:12:53,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:12:53,246 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:12:53,246 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:12:53,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:12:53,247 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_cd51e6da-de6f-47f3-af98-dda006f64459/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd51e6da-de6f-47f3-af98-dda006f64459/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a72b3b3683b5d2b2d35965fc1a3189152678e29fe154c9fbeb2d06d1447980e3 [2022-11-20 11:12:53,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:12:53,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:12:53,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:12:53,585 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:12:53,585 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:12:53,587 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd51e6da-de6f-47f3-af98-dda006f64459/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.i [2022-11-20 11:12:56,842 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:12:57,341 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:12:57,342 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd51e6da-de6f-47f3-af98-dda006f64459/sv-benchmarks/c/pthread-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.i [2022-11-20 11:12:57,362 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd51e6da-de6f-47f3-af98-dda006f64459/bin/uautomizer-ug76WZFUDN/data/caa7daa49/5a6e17c733a24994bb210cc2e79e79d2/FLAGa1835b60b [2022-11-20 11:12:57,386 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd51e6da-de6f-47f3-af98-dda006f64459/bin/uautomizer-ug76WZFUDN/data/caa7daa49/5a6e17c733a24994bb210cc2e79e79d2 [2022-11-20 11:12:57,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:12:57,394 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:12:57,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:12:57,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:12:57,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:12:57,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:57" (1/1) ... [2022-11-20 11:12:57,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@688bc27d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:57, skipping insertion in model container [2022-11-20 11:12:57,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:57" (1/1) ... [2022-11-20 11:12:57,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:12:57,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:12:57,755 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd51e6da-de6f-47f3-af98-dda006f64459/sv-benchmarks/c/pthread-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-11-20 11:12:58,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:12:58,050 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:12:58,071 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd51e6da-de6f-47f3-af98-dda006f64459/sv-benchmarks/c/pthread-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-11-20 11:12:58,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:12:58,255 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:12:58,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:58 WrapperNode [2022-11-20 11:12:58,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:12:58,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:12:58,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:12:58,259 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:12:58,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:58" (1/1) ... [2022-11-20 11:12:58,302 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:58" (1/1) ... [2022-11-20 11:12:58,341 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2022-11-20 11:12:58,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:12:58,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:12:58,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:12:58,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:12:58,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:58" (1/1) ... [2022-11-20 11:12:58,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:58" (1/1) ... [2022-11-20 11:12:58,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:58" (1/1) ... [2022-11-20 11:12:58,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:58" (1/1) ... [2022-11-20 11:12:58,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:58" (1/1) ... [2022-11-20 11:12:58,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:58" (1/1) ... [2022-11-20 11:12:58,375 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:58" (1/1) ... [2022-11-20 11:12:58,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:58" (1/1) ... [2022-11-20 11:12:58,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:12:58,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:12:58,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:12:58,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:12:58,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:58" (1/1) ... [2022-11-20 11:12:58,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:12:58,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd51e6da-de6f-47f3-af98-dda006f64459/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:58,450 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd51e6da-de6f-47f3-af98-dda006f64459/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:12:58,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd51e6da-de6f-47f3-af98-dda006f64459/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:12:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:12:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:12:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:12:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:12:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:12:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-20 11:12:58,504 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-20 11:12:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-20 11:12:58,506 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-20 11:12:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-20 11:12:58,506 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-20 11:12:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-20 11:12:58,506 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-20 11:12:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:12:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:12:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:12:58,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:12:58,509 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:12:58,676 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:12:58,678 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:12:59,249 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:12:59,440 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:12:59,441 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 11:12:59,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:12:59 BoogieIcfgContainer [2022-11-20 11:12:59,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:12:59,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:12:59,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:12:59,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:12:59,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:12:57" (1/3) ... [2022-11-20 11:12:59,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9eb82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:12:59, skipping insertion in model container [2022-11-20 11:12:59,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:58" (2/3) ... [2022-11-20 11:12:59,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9eb82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:12:59, skipping insertion in model container [2022-11-20 11:12:59,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:12:59" (3/3) ... [2022-11-20 11:12:59,457 INFO L112 eAbstractionObserver]: Analyzing ICFG mix040_power.oepc_pso.oepc_rmo.oepc.i [2022-11-20 11:12:59,469 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:12:59,527 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:12:59,528 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 11:12:59,528 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:12:59,667 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 11:12:59,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 139 transitions, 298 flow [2022-11-20 11:12:59,788 INFO L130 PetriNetUnfolder]: 2/135 cut-off events. [2022-11-20 11:12:59,788 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:12:59,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 135 events. 2/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-11-20 11:12:59,793 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 139 transitions, 298 flow [2022-11-20 11:12:59,798 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 135 transitions, 282 flow [2022-11-20 11:12:59,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:12:59,816 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1dadaa5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:12:59,816 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-20 11:12:59,830 INFO L130 PetriNetUnfolder]: 0/51 cut-off events. [2022-11-20 11:12:59,838 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:12:59,838 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:12:59,839 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:59,840 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:12:59,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:59,846 INFO L85 PathProgramCache]: Analyzing trace with hash -574341605, now seen corresponding path program 1 times [2022-11-20 11:12:59,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:59,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246913546] [2022-11-20 11:12:59,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:59,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:00,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:13:00,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:00,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246913546] [2022-11-20 11:13:00,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246913546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:00,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:00,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:13:00,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018371053] [2022-11-20 11:13:00,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:00,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:13:00,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:00,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:13:00,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:13:00,649 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 139 [2022-11-20 11:13:00,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 135 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:00,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:13:00,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 139 [2022-11-20 11:13:00,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:13:01,110 INFO L130 PetriNetUnfolder]: 162/623 cut-off events. [2022-11-20 11:13:01,111 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-11-20 11:13:01,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 623 events. 162/623 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3464 event pairs, 132 based on Foata normal form. 46/627 useless extension candidates. Maximal degree in co-relation 871. Up to 191 conditions per place. [2022-11-20 11:13:01,128 INFO L137 encePairwiseOnDemand]: 134/139 looper letters, 18 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2022-11-20 11:13:01,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 139 transitions, 339 flow [2022-11-20 11:13:01,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:13:01,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:13:01,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2022-11-20 11:13:01,153 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9448441247002398 [2022-11-20 11:13:01,154 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2022-11-20 11:13:01,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2022-11-20 11:13:01,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:13:01,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2022-11-20 11:13:01,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:01,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:01,181 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:01,184 INFO L175 Difference]: Start difference. First operand has 146 places, 135 transitions, 282 flow. Second operand 3 states and 394 transitions. [2022-11-20 11:13:01,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 139 transitions, 339 flow [2022-11-20 11:13:01,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 139 transitions, 332 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:13:01,198 INFO L231 Difference]: Finished difference. Result has 142 places, 131 transitions, 274 flow [2022-11-20 11:13:01,201 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=142, PETRI_TRANSITIONS=131} [2022-11-20 11:13:01,206 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, -4 predicate places. [2022-11-20 11:13:01,207 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 131 transitions, 274 flow [2022-11-20 11:13:01,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:01,208 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:13:01,208 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:01,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:13:01,209 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:13:01,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:01,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1300116423, now seen corresponding path program 1 times [2022-11-20 11:13:01,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:01,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660997538] [2022-11-20 11:13:01,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:01,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:01,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:13:01,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:01,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660997538] [2022-11-20 11:13:01,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660997538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:01,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:01,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:13:01,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561650383] [2022-11-20 11:13:01,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:01,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:13:01,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:01,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:13:01,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:13:01,858 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2022-11-20 11:13:01,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 131 transitions, 274 flow. Second operand has 7 states, 7 states have (on average 108.28571428571429) internal successors, (758), 7 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:01,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:13:01,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2022-11-20 11:13:01,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:13:08,768 INFO L130 PetriNetUnfolder]: 13320/29106 cut-off events. [2022-11-20 11:13:08,768 INFO L131 PetriNetUnfolder]: For 1069/1069 co-relation queries the response was YES. [2022-11-20 11:13:08,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48575 conditions, 29106 events. 13320/29106 cut-off events. For 1069/1069 co-relation queries the response was YES. Maximal size of possible extension queue 1170. Compared 301486 event pairs, 1292 based on Foata normal form. 0/28604 useless extension candidates. Maximal degree in co-relation 48514. Up to 6338 conditions per place. [2022-11-20 11:13:09,024 INFO L137 encePairwiseOnDemand]: 127/139 looper letters, 46 selfloop transitions, 8 changer transitions 125/268 dead transitions. [2022-11-20 11:13:09,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 268 transitions, 902 flow [2022-11-20 11:13:09,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:13:09,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:13:09,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1547 transitions. [2022-11-20 11:13:09,030 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8561151079136691 [2022-11-20 11:13:09,030 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1547 transitions. [2022-11-20 11:13:09,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1547 transitions. [2022-11-20 11:13:09,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:13:09,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1547 transitions. [2022-11-20 11:13:09,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 119.0) internal successors, (1547), 13 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:09,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:09,042 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:09,043 INFO L175 Difference]: Start difference. First operand has 142 places, 131 transitions, 274 flow. Second operand 13 states and 1547 transitions. [2022-11-20 11:13:09,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 268 transitions, 902 flow [2022-11-20 11:13:09,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 268 transitions, 876 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:13:09,053 INFO L231 Difference]: Finished difference. Result has 164 places, 123 transitions, 356 flow [2022-11-20 11:13:09,054 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=356, PETRI_PLACES=164, PETRI_TRANSITIONS=123} [2022-11-20 11:13:09,055 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 18 predicate places. [2022-11-20 11:13:09,056 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 123 transitions, 356 flow [2022-11-20 11:13:09,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.28571428571429) internal successors, (758), 7 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:09,057 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:13:09,057 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:09,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:13:09,058 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:13:09,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:09,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1992027269, now seen corresponding path program 1 times [2022-11-20 11:13:09,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:09,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347213970] [2022-11-20 11:13:09,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:09,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:09,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:13:09,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:09,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347213970] [2022-11-20 11:13:09,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347213970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:09,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:09,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:13:09,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32461633] [2022-11-20 11:13:09,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:09,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:13:09,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:09,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:13:09,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:13:09,619 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2022-11-20 11:13:09,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 123 transitions, 356 flow. Second operand has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:09,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:13:09,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2022-11-20 11:13:09,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:13:14,231 INFO L130 PetriNetUnfolder]: 9662/17037 cut-off events. [2022-11-20 11:13:14,231 INFO L131 PetriNetUnfolder]: For 34005/34092 co-relation queries the response was YES. [2022-11-20 11:13:14,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52219 conditions, 17037 events. 9662/17037 cut-off events. For 34005/34092 co-relation queries the response was YES. Maximal size of possible extension queue 850. Compared 137681 event pairs, 1759 based on Foata normal form. 326/16920 useless extension candidates. Maximal degree in co-relation 52146. Up to 5235 conditions per place. [2022-11-20 11:13:14,433 INFO L137 encePairwiseOnDemand]: 125/139 looper letters, 48 selfloop transitions, 18 changer transitions 100/255 dead transitions. [2022-11-20 11:13:14,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 255 transitions, 1436 flow [2022-11-20 11:13:14,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:13:14,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:13:14,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1541 transitions. [2022-11-20 11:13:14,442 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8527946873270614 [2022-11-20 11:13:14,442 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1541 transitions. [2022-11-20 11:13:14,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1541 transitions. [2022-11-20 11:13:14,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:13:14,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1541 transitions. [2022-11-20 11:13:14,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 118.53846153846153) internal successors, (1541), 13 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:14,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:14,459 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:14,459 INFO L175 Difference]: Start difference. First operand has 164 places, 123 transitions, 356 flow. Second operand 13 states and 1541 transitions. [2022-11-20 11:13:14,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 255 transitions, 1436 flow [2022-11-20 11:13:14,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 255 transitions, 1408 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-11-20 11:13:14,653 INFO L231 Difference]: Finished difference. Result has 161 places, 132 transitions, 533 flow [2022-11-20 11:13:14,654 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=533, PETRI_PLACES=161, PETRI_TRANSITIONS=132} [2022-11-20 11:13:14,657 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 15 predicate places. [2022-11-20 11:13:14,658 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 132 transitions, 533 flow [2022-11-20 11:13:14,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:14,659 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:13:14,659 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:14,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:13:14,660 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:13:14,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:14,661 INFO L85 PathProgramCache]: Analyzing trace with hash -350734474, now seen corresponding path program 1 times [2022-11-20 11:13:14,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:14,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581871474] [2022-11-20 11:13:14,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:14,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:15,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:13:15,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:15,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581871474] [2022-11-20 11:13:15,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581871474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:15,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:15,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:13:15,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035558823] [2022-11-20 11:13:15,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:15,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:13:15,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:15,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:13:15,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:13:15,137 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 139 [2022-11-20 11:13:15,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 132 transitions, 533 flow. Second operand has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:15,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:13:15,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 139 [2022-11-20 11:13:15,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:13:18,396 INFO L130 PetriNetUnfolder]: 7121/12895 cut-off events. [2022-11-20 11:13:18,397 INFO L131 PetriNetUnfolder]: For 50099/50594 co-relation queries the response was YES. [2022-11-20 11:13:18,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45327 conditions, 12895 events. 7121/12895 cut-off events. For 50099/50594 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 104973 event pairs, 1962 based on Foata normal form. 538/13077 useless extension candidates. Maximal degree in co-relation 45244. Up to 5812 conditions per place. [2022-11-20 11:13:18,519 INFO L137 encePairwiseOnDemand]: 132/139 looper letters, 32 selfloop transitions, 7 changer transitions 67/213 dead transitions. [2022-11-20 11:13:18,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 213 transitions, 1345 flow [2022-11-20 11:13:18,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:13:18,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:13:18,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1106 transitions. [2022-11-20 11:13:18,531 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8840927258193445 [2022-11-20 11:13:18,532 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1106 transitions. [2022-11-20 11:13:18,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1106 transitions. [2022-11-20 11:13:18,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:13:18,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1106 transitions. [2022-11-20 11:13:18,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 122.88888888888889) internal successors, (1106), 9 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:18,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 139.0) internal successors, (1390), 10 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:18,547 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 139.0) internal successors, (1390), 10 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:18,547 INFO L175 Difference]: Start difference. First operand has 161 places, 132 transitions, 533 flow. Second operand 9 states and 1106 transitions. [2022-11-20 11:13:18,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 213 transitions, 1345 flow [2022-11-20 11:13:18,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 213 transitions, 1297 flow, removed 24 selfloop flow, removed 9 redundant places. [2022-11-20 11:13:18,832 INFO L231 Difference]: Finished difference. Result has 158 places, 138 transitions, 652 flow [2022-11-20 11:13:18,838 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=652, PETRI_PLACES=158, PETRI_TRANSITIONS=138} [2022-11-20 11:13:18,840 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 12 predicate places. [2022-11-20 11:13:18,840 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 138 transitions, 652 flow [2022-11-20 11:13:18,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:18,841 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:13:18,841 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:18,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:13:18,842 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:13:18,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:18,843 INFO L85 PathProgramCache]: Analyzing trace with hash 930839413, now seen corresponding path program 1 times [2022-11-20 11:13:18,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:18,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948010740] [2022-11-20 11:13:18,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:18,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:19,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:13:19,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:19,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948010740] [2022-11-20 11:13:19,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948010740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:19,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:19,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:13:19,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161831496] [2022-11-20 11:13:19,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:19,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:13:19,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:19,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:13:19,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:13:19,209 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2022-11-20 11:13:19,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 138 transitions, 652 flow. Second operand has 7 states, 7 states have (on average 108.71428571428571) internal successors, (761), 7 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:19,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:13:19,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2022-11-20 11:13:19,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:13:24,212 INFO L130 PetriNetUnfolder]: 9343/17212 cut-off events. [2022-11-20 11:13:24,212 INFO L131 PetriNetUnfolder]: For 65860/66391 co-relation queries the response was YES. [2022-11-20 11:13:24,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59837 conditions, 17212 events. 9343/17212 cut-off events. For 65860/66391 co-relation queries the response was YES. Maximal size of possible extension queue 821. Compared 145211 event pairs, 1600 based on Foata normal form. 290/16931 useless extension candidates. Maximal degree in co-relation 59750. Up to 4348 conditions per place. [2022-11-20 11:13:24,366 INFO L137 encePairwiseOnDemand]: 125/139 looper letters, 56 selfloop transitions, 26 changer transitions 92/263 dead transitions. [2022-11-20 11:13:24,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 263 transitions, 1830 flow [2022-11-20 11:13:24,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:13:24,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:13:24,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1524 transitions. [2022-11-20 11:13:24,373 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8433868289983398 [2022-11-20 11:13:24,373 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1524 transitions. [2022-11-20 11:13:24,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1524 transitions. [2022-11-20 11:13:24,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:13:24,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1524 transitions. [2022-11-20 11:13:24,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 117.23076923076923) internal successors, (1524), 13 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:24,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:24,385 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:24,385 INFO L175 Difference]: Start difference. First operand has 158 places, 138 transitions, 652 flow. Second operand 13 states and 1524 transitions. [2022-11-20 11:13:24,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 263 transitions, 1830 flow [2022-11-20 11:13:24,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 263 transitions, 1776 flow, removed 23 selfloop flow, removed 4 redundant places. [2022-11-20 11:13:24,582 INFO L231 Difference]: Finished difference. Result has 172 places, 145 transitions, 859 flow [2022-11-20 11:13:24,583 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=859, PETRI_PLACES=172, PETRI_TRANSITIONS=145} [2022-11-20 11:13:24,586 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 26 predicate places. [2022-11-20 11:13:24,586 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 145 transitions, 859 flow [2022-11-20 11:13:24,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.71428571428571) internal successors, (761), 7 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:24,587 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:13:24,587 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:24,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:13:24,588 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:13:24,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:24,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1857227233, now seen corresponding path program 1 times [2022-11-20 11:13:24,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:24,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145084098] [2022-11-20 11:13:24,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:24,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:24,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:13:24,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:24,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145084098] [2022-11-20 11:13:24,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145084098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:24,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:24,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:13:24,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978121344] [2022-11-20 11:13:24,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:24,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:13:24,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:24,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:13:24,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:13:24,959 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 139 [2022-11-20 11:13:24,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 145 transitions, 859 flow. Second operand has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:24,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:13:24,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 139 [2022-11-20 11:13:24,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:13:35,386 INFO L130 PetriNetUnfolder]: 29576/51719 cut-off events. [2022-11-20 11:13:35,386 INFO L131 PetriNetUnfolder]: For 101779/113920 co-relation queries the response was YES. [2022-11-20 11:13:35,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128996 conditions, 51719 events. 29576/51719 cut-off events. For 101779/113920 co-relation queries the response was YES. Maximal size of possible extension queue 2876. Compared 490713 event pairs, 2088 based on Foata normal form. 554/49984 useless extension candidates. Maximal degree in co-relation 128899. Up to 16689 conditions per place. [2022-11-20 11:13:36,069 INFO L137 encePairwiseOnDemand]: 128/139 looper letters, 101 selfloop transitions, 20 changer transitions 0/241 dead transitions. [2022-11-20 11:13:36,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 241 transitions, 1551 flow [2022-11-20 11:13:36,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:13:36,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:13:36,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1227 transitions. [2022-11-20 11:13:36,075 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8827338129496403 [2022-11-20 11:13:36,075 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1227 transitions. [2022-11-20 11:13:36,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1227 transitions. [2022-11-20 11:13:36,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:13:36,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1227 transitions. [2022-11-20 11:13:36,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 122.7) internal successors, (1227), 10 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:36,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:36,086 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:36,087 INFO L175 Difference]: Start difference. First operand has 172 places, 145 transitions, 859 flow. Second operand 10 states and 1227 transitions. [2022-11-20 11:13:36,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 241 transitions, 1551 flow [2022-11-20 11:13:36,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 241 transitions, 1527 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-11-20 11:13:36,269 INFO L231 Difference]: Finished difference. Result has 175 places, 163 transitions, 978 flow [2022-11-20 11:13:36,270 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=978, PETRI_PLACES=175, PETRI_TRANSITIONS=163} [2022-11-20 11:13:36,272 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 29 predicate places. [2022-11-20 11:13:36,273 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 163 transitions, 978 flow [2022-11-20 11:13:36,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:36,274 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:13:36,274 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:36,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:13:36,274 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:13:36,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:36,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1255285, now seen corresponding path program 1 times [2022-11-20 11:13:36,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:36,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602335671] [2022-11-20 11:13:36,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:36,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:36,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:13:36,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:36,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602335671] [2022-11-20 11:13:36,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602335671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:36,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:36,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:13:36,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037624018] [2022-11-20 11:13:36,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:36,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:13:36,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:36,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:13:36,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:13:36,689 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2022-11-20 11:13:36,690 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 163 transitions, 978 flow. Second operand has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:36,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:13:36,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2022-11-20 11:13:36,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:13:43,594 INFO L130 PetriNetUnfolder]: 11890/30976 cut-off events. [2022-11-20 11:13:43,594 INFO L131 PetriNetUnfolder]: For 116755/122381 co-relation queries the response was YES. [2022-11-20 11:13:44,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101696 conditions, 30976 events. 11890/30976 cut-off events. For 116755/122381 co-relation queries the response was YES. Maximal size of possible extension queue 1975. Compared 384814 event pairs, 3239 based on Foata normal form. 604/29572 useless extension candidates. Maximal degree in co-relation 101589. Up to 5630 conditions per place. [2022-11-20 11:13:44,215 INFO L137 encePairwiseOnDemand]: 125/139 looper letters, 128 selfloop transitions, 43 changer transitions 0/278 dead transitions. [2022-11-20 11:13:44,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 278 transitions, 2296 flow [2022-11-20 11:13:44,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:13:44,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:13:44,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1518 transitions. [2022-11-20 11:13:44,221 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8400664084117322 [2022-11-20 11:13:44,221 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1518 transitions. [2022-11-20 11:13:44,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1518 transitions. [2022-11-20 11:13:44,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:13:44,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1518 transitions. [2022-11-20 11:13:44,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.76923076923077) internal successors, (1518), 13 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:44,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:44,232 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:44,232 INFO L175 Difference]: Start difference. First operand has 175 places, 163 transitions, 978 flow. Second operand 13 states and 1518 transitions. [2022-11-20 11:13:44,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 278 transitions, 2296 flow [2022-11-20 11:13:44,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 278 transitions, 2245 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:13:44,502 INFO L231 Difference]: Finished difference. Result has 197 places, 189 transitions, 1571 flow [2022-11-20 11:13:44,503 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=952, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1571, PETRI_PLACES=197, PETRI_TRANSITIONS=189} [2022-11-20 11:13:44,504 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 51 predicate places. [2022-11-20 11:13:44,504 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 189 transitions, 1571 flow [2022-11-20 11:13:44,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:44,505 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:13:44,505 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:44,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:13:44,505 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:13:44,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:44,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1810121167, now seen corresponding path program 1 times [2022-11-20 11:13:44,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:44,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996576162] [2022-11-20 11:13:44,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:44,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:44,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:13:44,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:44,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996576162] [2022-11-20 11:13:44,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996576162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:44,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:44,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:13:44,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649126194] [2022-11-20 11:13:44,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:44,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:13:44,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:44,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:13:44,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:13:44,786 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 139 [2022-11-20 11:13:44,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 189 transitions, 1571 flow. Second operand has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:44,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:13:44,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 139 [2022-11-20 11:13:44,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand