./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ceecd17-048b-49a0-a7e6-92eaec18bb11/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ceecd17-048b-49a0-a7e6-92eaec18bb11/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ceecd17-048b-49a0-a7e6-92eaec18bb11/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ceecd17-048b-49a0-a7e6-92eaec18bb11/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ceecd17-048b-49a0-a7e6-92eaec18bb11/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ceecd17-048b-49a0-a7e6-92eaec18bb11/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5350e4ca2594121b974c795f0a5f8bd0219ad1e56ba65ceaff14b5f6479d7178 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:15:40,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:15:40,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:15:40,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:15:40,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:15:40,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:15:40,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:15:40,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:15:40,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:15:40,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:15:40,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:15:40,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:15:40,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:15:40,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:15:40,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:15:40,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:15:40,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:15:40,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:15:40,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:15:40,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:15:40,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:15:40,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:15:40,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:15:40,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:15:40,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:15:40,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:15:40,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:15:40,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:15:40,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:15:40,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:15:40,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:15:40,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:15:40,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:15:40,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:15:40,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:15:40,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:15:40,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:15:40,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:15:40,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:15:40,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:15:40,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:15:40,217 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ceecd17-048b-49a0-a7e6-92eaec18bb11/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:15:40,274 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:15:40,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:15:40,279 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:15:40,279 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:15:40,280 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:15:40,281 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:15:40,281 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:15:40,282 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:15:40,282 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:15:40,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:15:40,283 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:15:40,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:15:40,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:15:40,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:15:40,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:15:40,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:15:40,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:15:40,285 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:15:40,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:15:40,285 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:15:40,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:15:40,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:15:40,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:15:40,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:15:40,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:15:40,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:15:40,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:15:40,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:15:40,289 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:15:40,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:15:40,290 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:15:40,290 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:15:40,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:15:40,291 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_6ceecd17-048b-49a0-a7e6-92eaec18bb11/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ceecd17-048b-49a0-a7e6-92eaec18bb11/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5350e4ca2594121b974c795f0a5f8bd0219ad1e56ba65ceaff14b5f6479d7178 [2022-10-17 10:15:40,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:15:40,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:15:40,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:15:40,574 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:15:40,575 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:15:40,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ceecd17-048b-49a0-a7e6-92eaec18bb11/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-10-17 10:15:40,642 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ceecd17-048b-49a0-a7e6-92eaec18bb11/bin/uautomizer-J5u9QxTXDZ/data/79cf0406c/1370c75676ca4696b9b2019d4fed54db/FLAGc8320b02e [2022-10-17 10:15:41,194 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:15:41,195 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ceecd17-048b-49a0-a7e6-92eaec18bb11/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-10-17 10:15:41,214 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ceecd17-048b-49a0-a7e6-92eaec18bb11/bin/uautomizer-J5u9QxTXDZ/data/79cf0406c/1370c75676ca4696b9b2019d4fed54db/FLAGc8320b02e [2022-10-17 10:15:41,491 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ceecd17-048b-49a0-a7e6-92eaec18bb11/bin/uautomizer-J5u9QxTXDZ/data/79cf0406c/1370c75676ca4696b9b2019d4fed54db [2022-10-17 10:15:41,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:15:41,495 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:15:41,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:15:41,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:15:41,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:15:41,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:15:41" (1/1) ... [2022-10-17 10:15:41,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@135983f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:41, skipping insertion in model container [2022-10-17 10:15:41,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:15:41" (1/1) ... [2022-10-17 10:15:41,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:15:41,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:15:41,729 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ceecd17-048b-49a0-a7e6-92eaec18bb11/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-10-17 10:15:41,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:15:41,956 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:15:41,975 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ceecd17-048b-49a0-a7e6-92eaec18bb11/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-10-17 10:15:42,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:15:42,086 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:15:42,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:42 WrapperNode [2022-10-17 10:15:42,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:15:42,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:15:42,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:15:42,088 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:15:42,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:42" (1/1) ... [2022-10-17 10:15:42,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:42" (1/1) ... [2022-10-17 10:15:42,134 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-10-17 10:15:42,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:15:42,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:15:42,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:15:42,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:15:42,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:42" (1/1) ... [2022-10-17 10:15:42,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:42" (1/1) ... [2022-10-17 10:15:42,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:42" (1/1) ... [2022-10-17 10:15:42,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:42" (1/1) ... [2022-10-17 10:15:42,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:42" (1/1) ... [2022-10-17 10:15:42,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:42" (1/1) ... [2022-10-17 10:15:42,192 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:42" (1/1) ... [2022-10-17 10:15:42,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:42" (1/1) ... [2022-10-17 10:15:42,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:15:42,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:15:42,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:15:42,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:15:42,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:42" (1/1) ... [2022-10-17 10:15:42,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:15:42,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ceecd17-048b-49a0-a7e6-92eaec18bb11/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:42,244 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ceecd17-048b-49a0-a7e6-92eaec18bb11/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:42,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ceecd17-048b-49a0-a7e6-92eaec18bb11/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:15:42,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:15:42,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:15:42,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:15:42,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:15:42,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:15:42,284 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-10-17 10:15:42,284 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-10-17 10:15:42,284 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-10-17 10:15:42,284 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-10-17 10:15:42,284 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-10-17 10:15:42,285 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-10-17 10:15:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:15:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:15:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:15:42,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:15:42,287 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:15:42,409 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:15:42,412 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:15:42,703 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:15:42,712 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:15:42,712 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:15:42,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:15:42 BoogieIcfgContainer [2022-10-17 10:15:42,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:15:42,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:15:42,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:15:42,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:15:42,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:15:41" (1/3) ... [2022-10-17 10:15:42,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773d85f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:15:42, skipping insertion in model container [2022-10-17 10:15:42,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:42" (2/3) ... [2022-10-17 10:15:42,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773d85f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:15:42, skipping insertion in model container [2022-10-17 10:15:42,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:15:42" (3/3) ... [2022-10-17 10:15:42,729 INFO L112 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-10-17 10:15:42,740 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:15:42,752 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:15:42,753 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:15:42,753 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:15:42,852 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:15:42,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 197 flow [2022-10-17 10:15:43,014 INFO L130 PetriNetUnfolder]: 2/88 cut-off events. [2022-10-17 10:15:43,015 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:15:43,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-10-17 10:15:43,022 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 197 flow [2022-10-17 10:15:43,033 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 157 flow [2022-10-17 10:15:43,064 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:15:43,071 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;@49a20396, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:15:43,071 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-17 10:15:43,099 INFO L130 PetriNetUnfolder]: 1/73 cut-off events. [2022-10-17 10:15:43,099 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:15:43,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:15:43,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:43,101 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:15:43,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:43,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1788437869, now seen corresponding path program 1 times [2022-10-17 10:15:43,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:43,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127358137] [2022-10-17 10:15:43,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:43,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:44,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:44,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:44,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127358137] [2022-10-17 10:15:44,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127358137] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:44,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:44,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:15:44,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392799203] [2022-10-17 10:15:44,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:44,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:15:44,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:44,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:15:44,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:15:44,220 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-10-17 10:15:44,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 157 flow. Second operand has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:44,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:15:44,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-10-17 10:15:44,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:15:44,935 INFO L130 PetriNetUnfolder]: 555/1250 cut-off events. [2022-10-17 10:15:44,936 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-10-17 10:15:44,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2178 conditions, 1250 events. 555/1250 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7593 event pairs, 43 based on Foata normal form. 42/1245 useless extension candidates. Maximal degree in co-relation 2141. Up to 248 conditions per place. [2022-10-17 10:15:44,957 INFO L137 encePairwiseOnDemand]: 79/91 looper letters, 25 selfloop transitions, 7 changer transitions 56/142 dead transitions. [2022-10-17 10:15:44,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 142 transitions, 469 flow [2022-10-17 10:15:44,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:15:44,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:15:44,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 978 transitions. [2022-10-17 10:15:44,990 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8267117497886729 [2022-10-17 10:15:44,991 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 978 transitions. [2022-10-17 10:15:44,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 978 transitions. [2022-10-17 10:15:44,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:15:45,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 978 transitions. [2022-10-17 10:15:45,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.23076923076923) internal successors, (978), 13 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:45,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:45,025 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:45,028 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 157 flow. Second operand 13 states and 978 transitions. [2022-10-17 10:15:45,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 142 transitions, 469 flow [2022-10-17 10:15:45,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 142 transitions, 466 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-10-17 10:15:45,045 INFO L231 Difference]: Finished difference. Result has 104 places, 78 transitions, 252 flow [2022-10-17 10:15:45,048 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=252, PETRI_PLACES=104, PETRI_TRANSITIONS=78} [2022-10-17 10:15:45,053 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 21 predicate places. [2022-10-17 10:15:45,054 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 78 transitions, 252 flow [2022-10-17 10:15:45,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:45,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:15:45,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:45,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:15:45,057 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:15:45,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:45,058 INFO L85 PathProgramCache]: Analyzing trace with hash 576490610, now seen corresponding path program 1 times [2022-10-17 10:15:45,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:45,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728487131] [2022-10-17 10:15:45,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:45,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:45,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:45,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:45,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728487131] [2022-10-17 10:15:45,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728487131] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:45,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:45,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:15:45,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539869538] [2022-10-17 10:15:45,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:45,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:15:45,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:45,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:15:45,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:15:45,573 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-10-17 10:15:45,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 78 transitions, 252 flow. Second operand has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:45,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:15:45,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-10-17 10:15:45,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:15:46,003 INFO L130 PetriNetUnfolder]: 338/806 cut-off events. [2022-10-17 10:15:46,003 INFO L131 PetriNetUnfolder]: For 2247/2876 co-relation queries the response was YES. [2022-10-17 10:15:46,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2956 conditions, 806 events. 338/806 cut-off events. For 2247/2876 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4314 event pairs, 6 based on Foata normal form. 27/808 useless extension candidates. Maximal degree in co-relation 2908. Up to 238 conditions per place. [2022-10-17 10:15:46,017 INFO L137 encePairwiseOnDemand]: 79/91 looper letters, 29 selfloop transitions, 12 changer transitions 58/153 dead transitions. [2022-10-17 10:15:46,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 153 transitions, 1018 flow [2022-10-17 10:15:46,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:15:46,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:15:46,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 967 transitions. [2022-10-17 10:15:46,022 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8174133558748944 [2022-10-17 10:15:46,022 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 967 transitions. [2022-10-17 10:15:46,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 967 transitions. [2022-10-17 10:15:46,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:15:46,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 967 transitions. [2022-10-17 10:15:46,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.38461538461539) internal successors, (967), 13 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:46,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:46,034 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:46,034 INFO L175 Difference]: Start difference. First operand has 104 places, 78 transitions, 252 flow. Second operand 13 states and 967 transitions. [2022-10-17 10:15:46,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 153 transitions, 1018 flow [2022-10-17 10:15:46,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 153 transitions, 990 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-10-17 10:15:46,058 INFO L231 Difference]: Finished difference. Result has 115 places, 85 transitions, 397 flow [2022-10-17 10:15:46,059 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=397, PETRI_PLACES=115, PETRI_TRANSITIONS=85} [2022-10-17 10:15:46,060 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 32 predicate places. [2022-10-17 10:15:46,060 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 85 transitions, 397 flow [2022-10-17 10:15:46,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:46,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:15:46,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:46,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:15:46,061 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:15:46,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:46,062 INFO L85 PathProgramCache]: Analyzing trace with hash -483554957, now seen corresponding path program 1 times [2022-10-17 10:15:46,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:46,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931591534] [2022-10-17 10:15:46,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:46,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:46,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:46,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:46,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931591534] [2022-10-17 10:15:46,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931591534] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:46,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:46,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:15:46,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555463255] [2022-10-17 10:15:46,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:46,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:15:46,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:46,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:15:46,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:15:46,359 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-10-17 10:15:46,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 85 transitions, 397 flow. Second operand has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:46,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:15:46,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-10-17 10:15:46,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:15:46,760 INFO L130 PetriNetUnfolder]: 193/565 cut-off events. [2022-10-17 10:15:46,760 INFO L131 PetriNetUnfolder]: For 3061/3801 co-relation queries the response was YES. [2022-10-17 10:15:46,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2476 conditions, 565 events. 193/565 cut-off events. For 3061/3801 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2890 event pairs, 3 based on Foata normal form. 19/562 useless extension candidates. Maximal degree in co-relation 2416. Up to 139 conditions per place. [2022-10-17 10:15:46,771 INFO L137 encePairwiseOnDemand]: 80/91 looper letters, 33 selfloop transitions, 18 changer transitions 52/157 dead transitions. [2022-10-17 10:15:46,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 157 transitions, 1328 flow [2022-10-17 10:15:46,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:15:46,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:15:46,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 962 transitions. [2022-10-17 10:15:46,778 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8131868131868132 [2022-10-17 10:15:46,778 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 962 transitions. [2022-10-17 10:15:46,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 962 transitions. [2022-10-17 10:15:46,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:15:46,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 962 transitions. [2022-10-17 10:15:46,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.0) internal successors, (962), 13 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:46,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:46,789 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:46,790 INFO L175 Difference]: Start difference. First operand has 115 places, 85 transitions, 397 flow. Second operand 13 states and 962 transitions. [2022-10-17 10:15:46,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 157 transitions, 1328 flow [2022-10-17 10:15:46,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 157 transitions, 1252 flow, removed 36 selfloop flow, removed 4 redundant places. [2022-10-17 10:15:46,808 INFO L231 Difference]: Finished difference. Result has 126 places, 94 transitions, 599 flow [2022-10-17 10:15:46,809 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=599, PETRI_PLACES=126, PETRI_TRANSITIONS=94} [2022-10-17 10:15:46,811 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 43 predicate places. [2022-10-17 10:15:46,812 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 94 transitions, 599 flow [2022-10-17 10:15:46,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:46,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:15:46,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:46,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:15:46,813 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:15:46,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:46,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1605894129, now seen corresponding path program 1 times [2022-10-17 10:15:46,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:46,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145396157] [2022-10-17 10:15:46,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:46,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:47,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:47,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:47,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145396157] [2022-10-17 10:15:47,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145396157] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:47,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:47,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:15:47,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748970417] [2022-10-17 10:15:47,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:47,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:15:47,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:47,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:15:47,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:15:47,073 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 91 [2022-10-17 10:15:47,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 94 transitions, 599 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:47,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:15:47,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 91 [2022-10-17 10:15:47,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:15:47,291 INFO L130 PetriNetUnfolder]: 84/365 cut-off events. [2022-10-17 10:15:47,291 INFO L131 PetriNetUnfolder]: For 2380/2726 co-relation queries the response was YES. [2022-10-17 10:15:47,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1546 conditions, 365 events. 84/365 cut-off events. For 2380/2726 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1725 event pairs, 10 based on Foata normal form. 46/400 useless extension candidates. Maximal degree in co-relation 1488. Up to 87 conditions per place. [2022-10-17 10:15:47,300 INFO L137 encePairwiseOnDemand]: 84/91 looper letters, 19 selfloop transitions, 9 changer transitions 22/124 dead transitions. [2022-10-17 10:15:47,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 124 transitions, 1059 flow [2022-10-17 10:15:47,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:15:47,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:15:47,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 712 transitions. [2022-10-17 10:15:47,304 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8693528693528694 [2022-10-17 10:15:47,304 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 712 transitions. [2022-10-17 10:15:47,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 712 transitions. [2022-10-17 10:15:47,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:15:47,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 712 transitions. [2022-10-17 10:15:47,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.11111111111111) internal successors, (712), 9 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:47,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:47,318 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:47,319 INFO L175 Difference]: Start difference. First operand has 126 places, 94 transitions, 599 flow. Second operand 9 states and 712 transitions. [2022-10-17 10:15:47,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 124 transitions, 1059 flow [2022-10-17 10:15:47,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 124 transitions, 987 flow, removed 33 selfloop flow, removed 10 redundant places. [2022-10-17 10:15:47,334 INFO L231 Difference]: Finished difference. Result has 122 places, 100 transitions, 708 flow [2022-10-17 10:15:47,335 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=708, PETRI_PLACES=122, PETRI_TRANSITIONS=100} [2022-10-17 10:15:47,338 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 39 predicate places. [2022-10-17 10:15:47,338 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 100 transitions, 708 flow [2022-10-17 10:15:47,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:47,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:15:47,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:47,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:15:47,340 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:15:47,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:47,342 INFO L85 PathProgramCache]: Analyzing trace with hash -579227907, now seen corresponding path program 1 times [2022-10-17 10:15:47,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:47,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379045523] [2022-10-17 10:15:47,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:47,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:47,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:47,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:47,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379045523] [2022-10-17 10:15:47,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379045523] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:47,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:47,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:15:47,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934659404] [2022-10-17 10:15:47,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:47,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:15:47,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:47,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:15:47,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:15:47,597 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 91 [2022-10-17 10:15:47,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 100 transitions, 708 flow. Second operand has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:47,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:15:47,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 91 [2022-10-17 10:15:47,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:15:47,799 INFO L130 PetriNetUnfolder]: 105/499 cut-off events. [2022-10-17 10:15:47,799 INFO L131 PetriNetUnfolder]: For 3452/3892 co-relation queries the response was YES. [2022-10-17 10:15:47,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2114 conditions, 499 events. 105/499 cut-off events. For 3452/3892 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2859 event pairs, 16 based on Foata normal form. 34/508 useless extension candidates. Maximal degree in co-relation 2046. Up to 108 conditions per place. [2022-10-17 10:15:47,808 INFO L137 encePairwiseOnDemand]: 84/91 looper letters, 23 selfloop transitions, 6 changer transitions 19/119 dead transitions. [2022-10-17 10:15:47,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 119 transitions, 1035 flow [2022-10-17 10:15:47,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:15:47,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-10-17 10:15:47,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 605 transitions. [2022-10-17 10:15:47,812 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8310439560439561 [2022-10-17 10:15:47,812 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 605 transitions. [2022-10-17 10:15:47,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 605 transitions. [2022-10-17 10:15:47,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:15:47,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 605 transitions. [2022-10-17 10:15:47,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 75.625) internal successors, (605), 8 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:47,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:47,818 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:47,818 INFO L175 Difference]: Start difference. First operand has 122 places, 100 transitions, 708 flow. Second operand 8 states and 605 transitions. [2022-10-17 10:15:47,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 119 transitions, 1035 flow [2022-10-17 10:15:47,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 119 transitions, 980 flow, removed 23 selfloop flow, removed 10 redundant places. [2022-10-17 10:15:47,834 INFO L231 Difference]: Finished difference. Result has 118 places, 98 transitions, 666 flow [2022-10-17 10:15:47,834 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=666, PETRI_PLACES=118, PETRI_TRANSITIONS=98} [2022-10-17 10:15:47,835 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 35 predicate places. [2022-10-17 10:15:47,836 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 98 transitions, 666 flow [2022-10-17 10:15:47,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:47,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:15:47,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:47,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:15:47,837 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:15:47,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:47,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1320869941, now seen corresponding path program 2 times [2022-10-17 10:15:47,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:47,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395290433] [2022-10-17 10:15:47,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:47,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:48,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:48,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:48,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395290433] [2022-10-17 10:15:48,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395290433] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:48,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:48,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:15:48,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236485380] [2022-10-17 10:15:48,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:48,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:15:48,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:48,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:15:48,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:15:48,108 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-10-17 10:15:48,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 98 transitions, 666 flow. Second operand has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:48,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:15:48,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-10-17 10:15:48,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:15:48,309 INFO L130 PetriNetUnfolder]: 99/420 cut-off events. [2022-10-17 10:15:48,309 INFO L131 PetriNetUnfolder]: For 3192/4623 co-relation queries the response was YES. [2022-10-17 10:15:48,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1961 conditions, 420 events. 99/420 cut-off events. For 3192/4623 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2130 event pairs, 4 based on Foata normal form. 10/411 useless extension candidates. Maximal degree in co-relation 1895. Up to 107 conditions per place. [2022-10-17 10:15:48,317 INFO L137 encePairwiseOnDemand]: 80/91 looper letters, 28 selfloop transitions, 10 changer transitions 41/133 dead transitions. [2022-10-17 10:15:48,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 133 transitions, 1309 flow [2022-10-17 10:15:48,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:15:48,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-10-17 10:15:48,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 592 transitions. [2022-10-17 10:15:48,320 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8131868131868132 [2022-10-17 10:15:48,321 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 592 transitions. [2022-10-17 10:15:48,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 592 transitions. [2022-10-17 10:15:48,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:15:48,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 592 transitions. [2022-10-17 10:15:48,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 74.0) internal successors, (592), 8 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:48,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:48,327 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:48,327 INFO L175 Difference]: Start difference. First operand has 118 places, 98 transitions, 666 flow. Second operand 8 states and 592 transitions. [2022-10-17 10:15:48,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 133 transitions, 1309 flow [2022-10-17 10:15:48,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 133 transitions, 1269 flow, removed 14 selfloop flow, removed 6 redundant places. [2022-10-17 10:15:48,345 INFO L231 Difference]: Finished difference. Result has 118 places, 85 transitions, 502 flow [2022-10-17 10:15:48,346 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=502, PETRI_PLACES=118, PETRI_TRANSITIONS=85} [2022-10-17 10:15:48,347 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 35 predicate places. [2022-10-17 10:15:48,347 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 85 transitions, 502 flow [2022-10-17 10:15:48,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:48,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:15:48,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:48,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:15:48,349 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:15:48,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:48,349 INFO L85 PathProgramCache]: Analyzing trace with hash 321201720, now seen corresponding path program 1 times [2022-10-17 10:15:48,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:48,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538174700] [2022-10-17 10:15:48,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:48,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:48,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:48,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:48,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:48,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538174700] [2022-10-17 10:15:48,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538174700] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:48,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:48,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:15:48,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503861975] [2022-10-17 10:15:48,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:48,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:15:48,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:48,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:15:48,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:15:48,601 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-10-17 10:15:48,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 85 transitions, 502 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:48,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:15:48,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-10-17 10:15:48,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:15:48,856 INFO L130 PetriNetUnfolder]: 272/791 cut-off events. [2022-10-17 10:15:48,856 INFO L131 PetriNetUnfolder]: For 1869/2027 co-relation queries the response was YES. [2022-10-17 10:15:48,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1955 conditions, 791 events. 272/791 cut-off events. For 1869/2027 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5391 event pairs, 14 based on Foata normal form. 24/742 useless extension candidates. Maximal degree in co-relation 1889. Up to 191 conditions per place. [2022-10-17 10:15:48,869 INFO L137 encePairwiseOnDemand]: 81/91 looper letters, 29 selfloop transitions, 17 changer transitions 0/117 dead transitions. [2022-10-17 10:15:48,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 117 transitions, 662 flow [2022-10-17 10:15:48,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:15:48,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:15:48,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 788 transitions. [2022-10-17 10:15:48,873 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.865934065934066 [2022-10-17 10:15:48,874 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 788 transitions. [2022-10-17 10:15:48,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 788 transitions. [2022-10-17 10:15:48,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:15:48,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 788 transitions. [2022-10-17 10:15:48,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.8) internal successors, (788), 10 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:48,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:48,881 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:48,882 INFO L175 Difference]: Start difference. First operand has 118 places, 85 transitions, 502 flow. Second operand 10 states and 788 transitions. [2022-10-17 10:15:48,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 117 transitions, 662 flow [2022-10-17 10:15:48,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 117 transitions, 617 flow, removed 9 selfloop flow, removed 9 redundant places. [2022-10-17 10:15:48,894 INFO L231 Difference]: Finished difference. Result has 121 places, 100 transitions, 577 flow [2022-10-17 10:15:48,894 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=577, PETRI_PLACES=121, PETRI_TRANSITIONS=100} [2022-10-17 10:15:48,895 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 38 predicate places. [2022-10-17 10:15:48,895 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 100 transitions, 577 flow [2022-10-17 10:15:48,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:48,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:15:48,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:48,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:15:48,897 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:15:48,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:48,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1980623177, now seen corresponding path program 1 times [2022-10-17 10:15:48,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:48,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7650400] [2022-10-17 10:15:48,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:48,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:49,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:49,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:49,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7650400] [2022-10-17 10:15:49,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7650400] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:49,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:49,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:15:49,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071765992] [2022-10-17 10:15:49,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:49,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:15:49,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:49,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:15:49,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:15:49,113 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-10-17 10:15:49,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 100 transitions, 577 flow. Second operand has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:49,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:15:49,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-10-17 10:15:49,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:15:49,432 INFO L130 PetriNetUnfolder]: 246/760 cut-off events. [2022-10-17 10:15:49,432 INFO L131 PetriNetUnfolder]: For 2265/2535 co-relation queries the response was YES. [2022-10-17 10:15:49,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2662 conditions, 760 events. 246/760 cut-off events. For 2265/2535 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5389 event pairs, 3 based on Foata normal form. 69/784 useless extension candidates. Maximal degree in co-relation 2596. Up to 240 conditions per place. [2022-10-17 10:15:49,445 INFO L137 encePairwiseOnDemand]: 81/91 looper letters, 22 selfloop transitions, 32 changer transitions 13/138 dead transitions. [2022-10-17 10:15:49,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 138 transitions, 947 flow [2022-10-17 10:15:49,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:15:49,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:15:49,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1025 transitions. [2022-10-17 10:15:49,451 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8664412510566357 [2022-10-17 10:15:49,451 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1025 transitions. [2022-10-17 10:15:49,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1025 transitions. [2022-10-17 10:15:49,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:15:49,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1025 transitions. [2022-10-17 10:15:49,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 78.84615384615384) internal successors, (1025), 13 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:49,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:49,461 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:49,461 INFO L175 Difference]: Start difference. First operand has 121 places, 100 transitions, 577 flow. Second operand 13 states and 1025 transitions. [2022-10-17 10:15:49,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 138 transitions, 947 flow [2022-10-17 10:15:49,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 138 transitions, 909 flow, removed 18 selfloop flow, removed 4 redundant places. [2022-10-17 10:15:49,475 INFO L231 Difference]: Finished difference. Result has 133 places, 116 transitions, 742 flow [2022-10-17 10:15:49,475 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=742, PETRI_PLACES=133, PETRI_TRANSITIONS=116} [2022-10-17 10:15:49,476 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 50 predicate places. [2022-10-17 10:15:49,476 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 116 transitions, 742 flow [2022-10-17 10:15:49,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:49,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:15:49,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:49,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:15:49,478 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:15:49,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:49,478 INFO L85 PathProgramCache]: Analyzing trace with hash 616314994, now seen corresponding path program 1 times [2022-10-17 10:15:49,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:49,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872138378] [2022-10-17 10:15:49,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:49,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:49,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:49,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:49,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872138378] [2022-10-17 10:15:49,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872138378] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:49,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:49,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:15:49,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77219449] [2022-10-17 10:15:49,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:49,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:15:49,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:49,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:15:49,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:15:49,713 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-10-17 10:15:49,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 116 transitions, 742 flow. Second operand has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:49,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:15:49,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-10-17 10:15:49,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:15:50,064 INFO L130 PetriNetUnfolder]: 201/654 cut-off events. [2022-10-17 10:15:50,064 INFO L131 PetriNetUnfolder]: For 2816/3048 co-relation queries the response was YES. [2022-10-17 10:15:50,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2661 conditions, 654 events. 201/654 cut-off events. For 2816/3048 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4796 event pairs, 0 based on Foata normal form. 55/666 useless extension candidates. Maximal degree in co-relation 2592. Up to 192 conditions per place. [2022-10-17 10:15:50,074 INFO L137 encePairwiseOnDemand]: 83/91 looper letters, 0 selfloop transitions, 0 changer transitions 123/123 dead transitions. [2022-10-17 10:15:50,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 123 transitions, 917 flow [2022-10-17 10:15:50,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 10:15:50,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-10-17 10:15:50,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1163 transitions. [2022-10-17 10:15:50,079 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.852014652014652 [2022-10-17 10:15:50,079 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1163 transitions. [2022-10-17 10:15:50,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1163 transitions. [2022-10-17 10:15:50,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:15:50,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1163 transitions. [2022-10-17 10:15:50,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 77.53333333333333) internal successors, (1163), 15 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:50,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 91.0) internal successors, (1456), 16 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:50,090 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 91.0) internal successors, (1456), 16 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:50,090 INFO L175 Difference]: Start difference. First operand has 133 places, 116 transitions, 742 flow. Second operand 15 states and 1163 transitions. [2022-10-17 10:15:50,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 123 transitions, 917 flow [2022-10-17 10:15:50,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 123 transitions, 714 flow, removed 76 selfloop flow, removed 17 redundant places. [2022-10-17 10:15:50,111 INFO L231 Difference]: Finished difference. Result has 121 places, 0 transitions, 0 flow [2022-10-17 10:15:50,111 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=121, PETRI_TRANSITIONS=0} [2022-10-17 10:15:50,112 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 38 predicate places. [2022-10-17 10:15:50,112 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 0 transitions, 0 flow [2022-10-17 10:15:50,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:50,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-10-17 10:15:50,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-10-17 10:15:50,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-10-17 10:15:50,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-10-17 10:15:50,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:15:50,117 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:50,121 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-10-17 10:15:50,121 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 10:15:50,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 10:15:50 BasicIcfg [2022-10-17 10:15:50,128 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 10:15:50,128 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:15:50,128 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:15:50,129 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:15:50,129 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:15:42" (3/4) ... [2022-10-17 10:15:50,133 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-10-17 10:15:50,148 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-10-17 10:15:50,148 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-10-17 10:15:50,148 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-10-17 10:15:50,154 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-10-17 10:15:50,154 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-10-17 10:15:50,154 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-10-17 10:15:50,155 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-10-17 10:15:50,196 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ceecd17-048b-49a0-a7e6-92eaec18bb11/bin/uautomizer-J5u9QxTXDZ/witness.graphml [2022-10-17 10:15:50,196 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:15:50,197 INFO L158 Benchmark]: Toolchain (without parser) took 8701.73ms. Allocated memory was 107.0MB in the beginning and 167.8MB in the end (delta: 60.8MB). Free memory was 80.4MB in the beginning and 139.4MB in the end (delta: -59.0MB). Peak memory consumption was 101.7MB. Max. memory is 16.1GB. [2022-10-17 10:15:50,197 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 86.0MB. Free memory was 55.5MB in the beginning and 55.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:15:50,198 INFO L158 Benchmark]: CACSL2BoogieTranslator took 589.14ms. Allocated memory is still 107.0MB. Free memory was 80.1MB in the beginning and 60.5MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-10-17 10:15:50,198 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.62ms. Allocated memory is still 107.0MB. Free memory was 60.5MB in the beginning and 58.5MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-10-17 10:15:50,199 INFO L158 Benchmark]: Boogie Preprocessor took 61.51ms. Allocated memory is still 107.0MB. Free memory was 58.5MB in the beginning and 57.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:15:50,199 INFO L158 Benchmark]: RCFGBuilder took 518.02ms. Allocated memory is still 107.0MB. Free memory was 57.1MB in the beginning and 43.4MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-10-17 10:15:50,200 INFO L158 Benchmark]: TraceAbstraction took 7410.27ms. Allocated memory was 107.0MB in the beginning and 167.8MB in the end (delta: 60.8MB). Free memory was 42.7MB in the beginning and 43.2MB in the end (delta: -413.3kB). Peak memory consumption was 61.8MB. Max. memory is 16.1GB. [2022-10-17 10:15:50,201 INFO L158 Benchmark]: Witness Printer took 67.76ms. Allocated memory is still 167.8MB. Free memory was 43.2MB in the beginning and 139.4MB in the end (delta: -96.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:15:50,203 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 86.0MB. Free memory was 55.5MB in the beginning and 55.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 589.14ms. Allocated memory is still 107.0MB. Free memory was 80.1MB in the beginning and 60.5MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.62ms. Allocated memory is still 107.0MB. Free memory was 60.5MB in the beginning and 58.5MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.51ms. Allocated memory is still 107.0MB. Free memory was 58.5MB in the beginning and 57.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 518.02ms. Allocated memory is still 107.0MB. Free memory was 57.1MB in the beginning and 43.4MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7410.27ms. Allocated memory was 107.0MB in the beginning and 167.8MB in the end (delta: 60.8MB). Free memory was 42.7MB in the beginning and 43.2MB in the end (delta: -413.3kB). Peak memory consumption was 61.8MB. Max. memory is 16.1GB. * Witness Printer took 67.76ms. Allocated memory is still 167.8MB. Free memory was 43.2MB in the beginning and 139.4MB in the end (delta: -96.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 114 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.2s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 403 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 403 mSDsluCounter, 604 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 573 mSDsCounter, 100 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 599 IncrementalHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 100 mSolverCounterUnsat, 144 mSDtfsCounter, 599 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 124 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=742occurred in iteration=8, InterpolantAutomatonStates: 102, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 534 NumberOfCodeBlocks, 534 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 525 ConstructedInterpolants, 0 QuantifiedInterpolants, 2085 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-10-17 10:15:50,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ceecd17-048b-49a0-a7e6-92eaec18bb11/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE