./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe030_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8eec37-8333-4506-9c14-f55487c4d530/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8eec37-8333-4506-9c14-f55487c4d530/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8eec37-8333-4506-9c14-f55487c4d530/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8eec37-8333-4506-9c14-f55487c4d530/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe030_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8eec37-8333-4506-9c14-f55487c4d530/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8eec37-8333-4506-9c14-f55487c4d530/bin/uautomizer-Dbtcem3rbc --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 1730fa7f98e17ee8b58920ef3daf63ee88225f1b42924032a532b5f5db33fba5 --- 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-5e519f3 [2022-11-02 20:51:02,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:51:02,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:51:02,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:51:02,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:51:02,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:51:02,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:51:02,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:51:02,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:51:02,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:51:02,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:51:02,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:51:02,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:51:02,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:51:02,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:51:02,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:51:02,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:51:02,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:51:02,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:51:02,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:51:02,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:51:02,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:51:02,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:51:02,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:51:02,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:51:02,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:51:02,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:51:02,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:51:02,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:51:02,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:51:02,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:51:02,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:51:02,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:51:02,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:51:02,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:51:02,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:51:02,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:51:02,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:51:02,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:51:02,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:51:02,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:51:02,189 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8eec37-8333-4506-9c14-f55487c4d530/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:51:02,226 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:51:02,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:51:02,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:51:02,228 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:51:02,229 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:51:02,229 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:51:02,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:51:02,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:51:02,230 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:51:02,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:51:02,231 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:51:02,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:51:02,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:51:02,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:51:02,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:51:02,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:51:02,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:51:02,233 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:51:02,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:51:02,233 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:51:02,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:51:02,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:51:02,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:51:02,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:51:02,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:51:02,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:51:02,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:51:02,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:51:02,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:51:02,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:51:02,237 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:51:02,237 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:51:02,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:51:02,238 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_5c8eec37-8333-4506-9c14-f55487c4d530/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8eec37-8333-4506-9c14-f55487c4d530/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1730fa7f98e17ee8b58920ef3daf63ee88225f1b42924032a532b5f5db33fba5 [2022-11-02 20:51:02,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:51:02,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:51:02,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:51:02,600 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:51:02,601 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:51:02,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8eec37-8333-4506-9c14-f55487c4d530/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-wmm/safe030_tso.i [2022-11-02 20:51:02,685 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8eec37-8333-4506-9c14-f55487c4d530/bin/uautomizer-Dbtcem3rbc/data/e0c056911/c29268e1278a4d239271bba078dbfe14/FLAG86764c8e6 [2022-11-02 20:51:03,261 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:51:03,267 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8eec37-8333-4506-9c14-f55487c4d530/sv-benchmarks/c/pthread-wmm/safe030_tso.i [2022-11-02 20:51:03,282 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8eec37-8333-4506-9c14-f55487c4d530/bin/uautomizer-Dbtcem3rbc/data/e0c056911/c29268e1278a4d239271bba078dbfe14/FLAG86764c8e6 [2022-11-02 20:51:03,575 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8eec37-8333-4506-9c14-f55487c4d530/bin/uautomizer-Dbtcem3rbc/data/e0c056911/c29268e1278a4d239271bba078dbfe14 [2022-11-02 20:51:03,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:51:03,580 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:51:03,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:51:03,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:51:03,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:51:03,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:51:03" (1/1) ... [2022-11-02 20:51:03,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10bbf980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:03, skipping insertion in model container [2022-11-02 20:51:03,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:51:03" (1/1) ... [2022-11-02 20:51:03,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:51:03,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:51:03,840 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_5c8eec37-8333-4506-9c14-f55487c4d530/sv-benchmarks/c/pthread-wmm/safe030_tso.i[945,958] [2022-11-02 20:51:04,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:51:04,056 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:51:04,071 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_5c8eec37-8333-4506-9c14-f55487c4d530/sv-benchmarks/c/pthread-wmm/safe030_tso.i[945,958] [2022-11-02 20:51:04,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:51:04,162 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:51:04,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:04 WrapperNode [2022-11-02 20:51:04,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:51:04,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:51:04,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:51:04,165 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:51:04,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:04" (1/1) ... [2022-11-02 20:51:04,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:04" (1/1) ... [2022-11-02 20:51:04,238 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2022-11-02 20:51:04,238 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:51:04,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:51:04,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:51:04,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:51:04,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:04" (1/1) ... [2022-11-02 20:51:04,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:04" (1/1) ... [2022-11-02 20:51:04,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:04" (1/1) ... [2022-11-02 20:51:04,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:04" (1/1) ... [2022-11-02 20:51:04,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:04" (1/1) ... [2022-11-02 20:51:04,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:04" (1/1) ... [2022-11-02 20:51:04,292 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:04" (1/1) ... [2022-11-02 20:51:04,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:04" (1/1) ... [2022-11-02 20:51:04,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:51:04,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:51:04,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:51:04,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:51:04,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:04" (1/1) ... [2022-11-02 20:51:04,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:51:04,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8eec37-8333-4506-9c14-f55487c4d530/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:04,340 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8eec37-8333-4506-9c14-f55487c4d530/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:04,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8eec37-8333-4506-9c14-f55487c4d530/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:51:04,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:51:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:51:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:51:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:51:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:51:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-02 20:51:04,390 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-02 20:51:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-02 20:51:04,390 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-02 20:51:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-02 20:51:04,390 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-02 20:51:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:51:04,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:51:04,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:51:04,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:51:04,392 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:51:04,556 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:51:04,558 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:51:04,743 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:51:04,751 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:51:04,751 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:51:04,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:51:04 BoogieIcfgContainer [2022-11-02 20:51:04,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:51:04,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:51:04,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:51:04,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:51:04,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:51:03" (1/3) ... [2022-11-02 20:51:04,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417a281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:51:04, skipping insertion in model container [2022-11-02 20:51:04,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:04" (2/3) ... [2022-11-02 20:51:04,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417a281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:51:04, skipping insertion in model container [2022-11-02 20:51:04,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:51:04" (3/3) ... [2022-11-02 20:51:04,773 INFO L112 eAbstractionObserver]: Analyzing ICFG safe030_tso.i [2022-11-02 20:51:04,782 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:51:04,793 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:51:04,793 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:51:04,794 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:51:04,854 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:51:04,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 90 transitions, 195 flow [2022-11-02 20:51:04,965 INFO L130 PetriNetUnfolder]: 2/87 cut-off events. [2022-11-02 20:51:04,966 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:51:04,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-11-02 20:51:04,972 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 90 transitions, 195 flow [2022-11-02 20:51:04,977 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 73 transitions, 155 flow [2022-11-02 20:51:04,991 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:51:04,998 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;@5587235, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:51:04,998 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 20:51:05,056 INFO L130 PetriNetUnfolder]: 1/72 cut-off events. [2022-11-02 20:51:05,056 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:51:05,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:05,057 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] [2022-11-02 20:51:05,058 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:51:05,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:05,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1792320384, now seen corresponding path program 1 times [2022-11-02 20:51:05,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:05,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531751229] [2022-11-02 20:51:05,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:05,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:05,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:06,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:06,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531751229] [2022-11-02 20:51:06,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531751229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:06,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:06,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:51:06,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882206645] [2022-11-02 20:51:06,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:06,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:51:06,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:06,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:51:06,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:51:06,086 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 90 [2022-11-02 20:51:06,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 155 flow. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:06,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:06,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 90 [2022-11-02 20:51:06,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:06,809 INFO L130 PetriNetUnfolder]: 579/1369 cut-off events. [2022-11-02 20:51:06,809 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-02 20:51:06,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2341 conditions, 1369 events. 579/1369 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8609 event pairs, 50 based on Foata normal form. 49/1377 useless extension candidates. Maximal degree in co-relation 2306. Up to 289 conditions per place. [2022-11-02 20:51:06,828 INFO L137 encePairwiseOnDemand]: 78/90 looper letters, 27 selfloop transitions, 9 changer transitions 62/152 dead transitions. [2022-11-02 20:51:06,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 152 transitions, 518 flow [2022-11-02 20:51:06,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:51:06,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-02 20:51:06,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 988 transitions. [2022-11-02 20:51:06,851 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2022-11-02 20:51:06,852 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 988 transitions. [2022-11-02 20:51:06,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 988 transitions. [2022-11-02 20:51:06,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:06,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 988 transitions. [2022-11-02 20:51:06,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.0) internal successors, (988), 13 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:06,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:06,874 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:06,875 INFO L175 Difference]: Start difference. First operand has 82 places, 73 transitions, 155 flow. Second operand 13 states and 988 transitions. [2022-11-02 20:51:06,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 152 transitions, 518 flow [2022-11-02 20:51:06,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 152 transitions, 512 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-02 20:51:06,884 INFO L231 Difference]: Finished difference. Result has 103 places, 80 transitions, 260 flow [2022-11-02 20:51:06,886 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=260, PETRI_PLACES=103, PETRI_TRANSITIONS=80} [2022-11-02 20:51:06,889 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 21 predicate places. [2022-11-02 20:51:06,890 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 80 transitions, 260 flow [2022-11-02 20:51:06,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:06,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:06,891 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] [2022-11-02 20:51:06,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:51:06,891 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:51:06,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:06,892 INFO L85 PathProgramCache]: Analyzing trace with hash -503741729, now seen corresponding path program 1 times [2022-11-02 20:51:06,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:06,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480844799] [2022-11-02 20:51:06,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:06,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:07,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:07,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:07,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480844799] [2022-11-02 20:51:07,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480844799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:07,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:07,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:51:07,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57179164] [2022-11-02 20:51:07,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:07,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:51:07,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:07,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:51:07,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:51:07,255 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 90 [2022-11-02 20:51:07,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 80 transitions, 260 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) [2022-11-02 20:51:07,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:07,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 90 [2022-11-02 20:51:07,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:07,684 INFO L130 PetriNetUnfolder]: 394/941 cut-off events. [2022-11-02 20:51:07,684 INFO L131 PetriNetUnfolder]: For 2198/2897 co-relation queries the response was YES. [2022-11-02 20:51:07,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3227 conditions, 941 events. 394/941 cut-off events. For 2198/2897 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5328 event pairs, 10 based on Foata normal form. 26/939 useless extension candidates. Maximal degree in co-relation 3181. Up to 274 conditions per place. [2022-11-02 20:51:07,697 INFO L137 encePairwiseOnDemand]: 78/90 looper letters, 30 selfloop transitions, 16 changer transitions 58/158 dead transitions. [2022-11-02 20:51:07,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 158 transitions, 1016 flow [2022-11-02 20:51:07,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:51:07,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-02 20:51:07,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 973 transitions. [2022-11-02 20:51:07,702 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8316239316239317 [2022-11-02 20:51:07,702 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 973 transitions. [2022-11-02 20:51:07,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 973 transitions. [2022-11-02 20:51:07,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:07,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 973 transitions. [2022-11-02 20:51:07,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.84615384615384) internal successors, (973), 13 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:07,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:07,713 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:07,713 INFO L175 Difference]: Start difference. First operand has 103 places, 80 transitions, 260 flow. Second operand 13 states and 973 transitions. [2022-11-02 20:51:07,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 158 transitions, 1016 flow [2022-11-02 20:51:07,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 158 transitions, 992 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-11-02 20:51:07,734 INFO L231 Difference]: Finished difference. Result has 115 places, 90 transitions, 438 flow [2022-11-02 20:51:07,735 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=438, PETRI_PLACES=115, PETRI_TRANSITIONS=90} [2022-11-02 20:51:07,736 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 33 predicate places. [2022-11-02 20:51:07,737 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 90 transitions, 438 flow [2022-11-02 20:51:07,737 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) [2022-11-02 20:51:07,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:07,738 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] [2022-11-02 20:51:07,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:51:07,739 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)] === [2022-11-02 20:51:07,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:07,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1794281470, now seen corresponding path program 1 times [2022-11-02 20:51:07,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:07,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958144109] [2022-11-02 20:51:07,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:07,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:08,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:08,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:08,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958144109] [2022-11-02 20:51:08,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958144109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:08,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:08,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:51:08,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531833490] [2022-11-02 20:51:08,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:08,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:51:08,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:08,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:51:08,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:51:08,082 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 90 [2022-11-02 20:51:08,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 90 transitions, 438 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) [2022-11-02 20:51:08,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:08,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 90 [2022-11-02 20:51:08,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:08,306 INFO L130 PetriNetUnfolder]: 172/573 cut-off events. [2022-11-02 20:51:08,306 INFO L131 PetriNetUnfolder]: For 3255/3758 co-relation queries the response was YES. [2022-11-02 20:51:08,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2188 conditions, 573 events. 172/573 cut-off events. For 3255/3758 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3343 event pairs, 24 based on Foata normal form. 79/622 useless extension candidates. Maximal degree in co-relation 2131. Up to 157 conditions per place. [2022-11-02 20:51:08,315 INFO L137 encePairwiseOnDemand]: 83/90 looper letters, 16 selfloop transitions, 6 changer transitions 28/124 dead transitions. [2022-11-02 20:51:08,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 124 transitions, 866 flow [2022-11-02 20:51:08,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:51:08,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:51:08,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 702 transitions. [2022-11-02 20:51:08,318 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2022-11-02 20:51:08,318 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 702 transitions. [2022-11-02 20:51:08,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 702 transitions. [2022-11-02 20:51:08,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:08,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 702 transitions. [2022-11-02 20:51:08,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:08,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:08,324 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:08,324 INFO L175 Difference]: Start difference. First operand has 115 places, 90 transitions, 438 flow. Second operand 9 states and 702 transitions. [2022-11-02 20:51:08,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 124 transitions, 866 flow [2022-11-02 20:51:08,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 124 transitions, 818 flow, removed 24 selfloop flow, removed 3 redundant places. [2022-11-02 20:51:08,335 INFO L231 Difference]: Finished difference. Result has 118 places, 95 transitions, 534 flow [2022-11-02 20:51:08,336 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=534, PETRI_PLACES=118, PETRI_TRANSITIONS=95} [2022-11-02 20:51:08,337 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 36 predicate places. [2022-11-02 20:51:08,337 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 95 transitions, 534 flow [2022-11-02 20:51:08,337 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) [2022-11-02 20:51:08,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:08,338 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] [2022-11-02 20:51:08,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:51:08,338 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)] === [2022-11-02 20:51:08,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:08,339 INFO L85 PathProgramCache]: Analyzing trace with hash -777393522, now seen corresponding path program 1 times [2022-11-02 20:51:08,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:08,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712081180] [2022-11-02 20:51:08,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:08,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:08,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:08,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:08,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712081180] [2022-11-02 20:51:08,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712081180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:08,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:08,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:51:08,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459681826] [2022-11-02 20:51:08,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:08,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:51:08,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:08,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:51:08,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:51:08,548 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 90 [2022-11-02 20:51:08,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 95 transitions, 534 flow. Second operand has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:08,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:08,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 90 [2022-11-02 20:51:08,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:08,796 INFO L130 PetriNetUnfolder]: 161/637 cut-off events. [2022-11-02 20:51:08,796 INFO L131 PetriNetUnfolder]: For 3902/4253 co-relation queries the response was YES. [2022-11-02 20:51:08,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2452 conditions, 637 events. 161/637 cut-off events. For 3902/4253 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3961 event pairs, 31 based on Foata normal form. 53/668 useless extension candidates. Maximal degree in co-relation 2389. Up to 152 conditions per place. [2022-11-02 20:51:08,805 INFO L137 encePairwiseOnDemand]: 84/90 looper letters, 18 selfloop transitions, 6 changer transitions 14/114 dead transitions. [2022-11-02 20:51:08,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 114 transitions, 744 flow [2022-11-02 20:51:08,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:51:08,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:51:08,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 697 transitions. [2022-11-02 20:51:08,809 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8604938271604938 [2022-11-02 20:51:08,809 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 697 transitions. [2022-11-02 20:51:08,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 697 transitions. [2022-11-02 20:51:08,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:08,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 697 transitions. [2022-11-02 20:51:08,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.44444444444444) internal successors, (697), 9 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:08,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:08,814 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:08,815 INFO L175 Difference]: Start difference. First operand has 118 places, 95 transitions, 534 flow. Second operand 9 states and 697 transitions. [2022-11-02 20:51:08,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 114 transitions, 744 flow [2022-11-02 20:51:08,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 114 transitions, 694 flow, removed 22 selfloop flow, removed 10 redundant places. [2022-11-02 20:51:08,828 INFO L231 Difference]: Finished difference. Result has 117 places, 94 transitions, 524 flow [2022-11-02 20:51:08,828 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=524, PETRI_PLACES=117, PETRI_TRANSITIONS=94} [2022-11-02 20:51:08,829 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 35 predicate places. [2022-11-02 20:51:08,829 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 94 transitions, 524 flow [2022-11-02 20:51:08,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:08,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:08,830 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] [2022-11-02 20:51:08,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:51:08,831 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)] === [2022-11-02 20:51:08,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:08,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1370214732, now seen corresponding path program 1 times [2022-11-02 20:51:08,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:08,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335408981] [2022-11-02 20:51:08,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:08,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:09,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:09,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:09,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335408981] [2022-11-02 20:51:09,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335408981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:09,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:09,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:51:09,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346687778] [2022-11-02 20:51:09,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:09,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:51:09,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:09,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:51:09,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:51:09,016 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 90 [2022-11-02 20:51:09,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 94 transitions, 524 flow. Second operand has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:09,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:09,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 90 [2022-11-02 20:51:09,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:09,250 INFO L130 PetriNetUnfolder]: 123/627 cut-off events. [2022-11-02 20:51:09,250 INFO L131 PetriNetUnfolder]: For 3995/4835 co-relation queries the response was YES. [2022-11-02 20:51:09,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2377 conditions, 627 events. 123/627 cut-off events. For 3995/4835 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4285 event pairs, 16 based on Foata normal form. 47/654 useless extension candidates. Maximal degree in co-relation 2316. Up to 141 conditions per place. [2022-11-02 20:51:09,258 INFO L137 encePairwiseOnDemand]: 84/90 looper letters, 17 selfloop transitions, 7 changer transitions 14/112 dead transitions. [2022-11-02 20:51:09,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 112 transitions, 814 flow [2022-11-02 20:51:09,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:51:09,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:51:09,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 696 transitions. [2022-11-02 20:51:09,261 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8592592592592593 [2022-11-02 20:51:09,261 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 696 transitions. [2022-11-02 20:51:09,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 696 transitions. [2022-11-02 20:51:09,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:09,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 696 transitions. [2022-11-02 20:51:09,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.33333333333333) internal successors, (696), 9 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:09,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:09,267 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:09,267 INFO L175 Difference]: Start difference. First operand has 117 places, 94 transitions, 524 flow. Second operand 9 states and 696 transitions. [2022-11-02 20:51:09,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 112 transitions, 814 flow [2022-11-02 20:51:09,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 112 transitions, 752 flow, removed 28 selfloop flow, removed 7 redundant places. [2022-11-02 20:51:09,281 INFO L231 Difference]: Finished difference. Result has 119 places, 93 transitions, 527 flow [2022-11-02 20:51:09,282 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=527, PETRI_PLACES=119, PETRI_TRANSITIONS=93} [2022-11-02 20:51:09,283 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 37 predicate places. [2022-11-02 20:51:09,283 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 93 transitions, 527 flow [2022-11-02 20:51:09,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:09,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:09,284 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] [2022-11-02 20:51:09,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:51:09,284 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)] === [2022-11-02 20:51:09,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:09,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1189494470, now seen corresponding path program 1 times [2022-11-02 20:51:09,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:09,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037621868] [2022-11-02 20:51:09,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:09,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:09,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:09,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:09,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037621868] [2022-11-02 20:51:09,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037621868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:09,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:09,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:51:09,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527143503] [2022-11-02 20:51:09,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:09,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:51:09,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:09,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:51:09,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:51:09,444 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 90 [2022-11-02 20:51:09,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 93 transitions, 527 flow. Second operand has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:09,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:09,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 90 [2022-11-02 20:51:09,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:09,700 INFO L130 PetriNetUnfolder]: 125/669 cut-off events. [2022-11-02 20:51:09,700 INFO L131 PetriNetUnfolder]: For 5240/6369 co-relation queries the response was YES. [2022-11-02 20:51:09,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2697 conditions, 669 events. 125/669 cut-off events. For 5240/6369 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4729 event pairs, 41 based on Foata normal form. 23/665 useless extension candidates. Maximal degree in co-relation 2635. Up to 153 conditions per place. [2022-11-02 20:51:09,708 INFO L137 encePairwiseOnDemand]: 84/90 looper letters, 16 selfloop transitions, 7 changer transitions 15/110 dead transitions. [2022-11-02 20:51:09,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 110 transitions, 771 flow [2022-11-02 20:51:09,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:51:09,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:51:09,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 695 transitions. [2022-11-02 20:51:09,711 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8580246913580247 [2022-11-02 20:51:09,711 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 695 transitions. [2022-11-02 20:51:09,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 695 transitions. [2022-11-02 20:51:09,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:09,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 695 transitions. [2022-11-02 20:51:09,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.22222222222223) internal successors, (695), 9 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:09,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:09,717 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:09,717 INFO L175 Difference]: Start difference. First operand has 119 places, 93 transitions, 527 flow. Second operand 9 states and 695 transitions. [2022-11-02 20:51:09,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 110 transitions, 771 flow [2022-11-02 20:51:09,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 110 transitions, 712 flow, removed 26 selfloop flow, removed 7 redundant places. [2022-11-02 20:51:09,731 INFO L231 Difference]: Finished difference. Result has 121 places, 91 transitions, 507 flow [2022-11-02 20:51:09,732 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=507, PETRI_PLACES=121, PETRI_TRANSITIONS=91} [2022-11-02 20:51:09,734 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 39 predicate places. [2022-11-02 20:51:09,734 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 91 transitions, 507 flow [2022-11-02 20:51:09,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:09,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:09,735 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] [2022-11-02 20:51:09,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:51:09,736 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)] === [2022-11-02 20:51:09,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:09,737 INFO L85 PathProgramCache]: Analyzing trace with hash -908387999, now seen corresponding path program 1 times [2022-11-02 20:51:09,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:09,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605910983] [2022-11-02 20:51:09,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:09,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:09,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:09,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:09,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605910983] [2022-11-02 20:51:09,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605910983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:09,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:09,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:51:09,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710459411] [2022-11-02 20:51:09,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:09,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:51:09,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:09,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:51:09,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:51:09,967 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-11-02 20:51:09,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 91 transitions, 507 flow. Second operand has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:09,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:09,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-11-02 20:51:09,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:10,596 INFO L130 PetriNetUnfolder]: 1082/2663 cut-off events. [2022-11-02 20:51:10,596 INFO L131 PetriNetUnfolder]: For 2836/3044 co-relation queries the response was YES. [2022-11-02 20:51:10,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5773 conditions, 2663 events. 1082/2663 cut-off events. For 2836/3044 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 24479 event pairs, 44 based on Foata normal form. 14/2394 useless extension candidates. Maximal degree in co-relation 5710. Up to 780 conditions per place. [2022-11-02 20:51:10,620 INFO L137 encePairwiseOnDemand]: 80/90 looper letters, 29 selfloop transitions, 17 changer transitions 0/123 dead transitions. [2022-11-02 20:51:10,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 123 transitions, 667 flow [2022-11-02 20:51:10,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:51:10,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:51:10,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 778 transitions. [2022-11-02 20:51:10,624 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8644444444444445 [2022-11-02 20:51:10,624 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 778 transitions. [2022-11-02 20:51:10,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 778 transitions. [2022-11-02 20:51:10,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:10,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 778 transitions. [2022-11-02 20:51:10,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 77.8) internal successors, (778), 10 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:10,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:10,631 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:10,631 INFO L175 Difference]: Start difference. First operand has 121 places, 91 transitions, 507 flow. Second operand 10 states and 778 transitions. [2022-11-02 20:51:10,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 123 transitions, 667 flow [2022-11-02 20:51:10,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 123 transitions, 642 flow, removed 9 selfloop flow, removed 7 redundant places. [2022-11-02 20:51:10,644 INFO L231 Difference]: Finished difference. Result has 123 places, 106 transitions, 602 flow [2022-11-02 20:51:10,645 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=602, PETRI_PLACES=123, PETRI_TRANSITIONS=106} [2022-11-02 20:51:10,646 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 41 predicate places. [2022-11-02 20:51:10,646 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 106 transitions, 602 flow [2022-11-02 20:51:10,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:10,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:10,647 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] [2022-11-02 20:51:10,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:51:10,647 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)] === [2022-11-02 20:51:10,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:10,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1417754534, now seen corresponding path program 1 times [2022-11-02 20:51:10,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:10,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787079609] [2022-11-02 20:51:10,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:10,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:10,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:10,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:10,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787079609] [2022-11-02 20:51:10,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787079609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:10,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:10,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:51:10,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592377769] [2022-11-02 20:51:10,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:10,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:51:10,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:10,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:51:10,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:51:10,879 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-11-02 20:51:10,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 106 transitions, 602 flow. Second operand has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:10,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:10,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-11-02 20:51:10,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:11,607 INFO L130 PetriNetUnfolder]: 1089/2710 cut-off events. [2022-11-02 20:51:11,607 INFO L131 PetriNetUnfolder]: For 7783/8663 co-relation queries the response was YES. [2022-11-02 20:51:11,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9916 conditions, 2710 events. 1089/2710 cut-off events. For 7783/8663 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 25921 event pairs, 6 based on Foata normal form. 301/2802 useless extension candidates. Maximal degree in co-relation 9851. Up to 1135 conditions per place. [2022-11-02 20:51:11,631 INFO L137 encePairwiseOnDemand]: 80/90 looper letters, 22 selfloop transitions, 29 changer transitions 19/144 dead transitions. [2022-11-02 20:51:11,631 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 144 transitions, 972 flow [2022-11-02 20:51:11,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:51:11,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-02 20:51:11,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1012 transitions. [2022-11-02 20:51:11,634 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.864957264957265 [2022-11-02 20:51:11,634 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1012 transitions. [2022-11-02 20:51:11,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1012 transitions. [2022-11-02 20:51:11,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:11,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1012 transitions. [2022-11-02 20:51:11,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 77.84615384615384) internal successors, (1012), 13 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:11,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:11,642 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:11,643 INFO L175 Difference]: Start difference. First operand has 123 places, 106 transitions, 602 flow. Second operand 13 states and 1012 transitions. [2022-11-02 20:51:11,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 144 transitions, 972 flow [2022-11-02 20:51:11,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 144 transitions, 921 flow, removed 20 selfloop flow, removed 6 redundant places. [2022-11-02 20:51:11,678 INFO L231 Difference]: Finished difference. Result has 136 places, 117 transitions, 746 flow [2022-11-02 20:51:11,678 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=746, PETRI_PLACES=136, PETRI_TRANSITIONS=117} [2022-11-02 20:51:11,681 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 54 predicate places. [2022-11-02 20:51:11,681 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 117 transitions, 746 flow [2022-11-02 20:51:11,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:11,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:11,682 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] [2022-11-02 20:51:11,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:51:11,682 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)] === [2022-11-02 20:51:11,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:11,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1359427869, now seen corresponding path program 1 times [2022-11-02 20:51:11,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:11,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893652757] [2022-11-02 20:51:11,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:11,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:11,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:11,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893652757] [2022-11-02 20:51:11,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893652757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:11,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:11,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:51:11,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201909721] [2022-11-02 20:51:11,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:11,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:51:11,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:11,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:51:11,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:51:11,979 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-11-02 20:51:11,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 117 transitions, 746 flow. Second operand has 8 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:11,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:51:11,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-11-02 20:51:11,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:12,796 INFO L130 PetriNetUnfolder]: 753/2342 cut-off events. [2022-11-02 20:51:12,796 INFO L131 PetriNetUnfolder]: For 12952/13951 co-relation queries the response was YES. [2022-11-02 20:51:12,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10050 conditions, 2342 events. 753/2342 cut-off events. For 12952/13951 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 24607 event pairs, 2 based on Foata normal form. 275/2404 useless extension candidates. Maximal degree in co-relation 9981. Up to 821 conditions per place. [2022-11-02 20:51:12,815 INFO L137 encePairwiseOnDemand]: 82/90 looper letters, 0 selfloop transitions, 0 changer transitions 125/125 dead transitions. [2022-11-02 20:51:12,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 125 transitions, 931 flow [2022-11-02 20:51:12,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:51:12,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-02 20:51:12,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1150 transitions. [2022-11-02 20:51:12,819 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8518518518518519 [2022-11-02 20:51:12,819 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1150 transitions. [2022-11-02 20:51:12,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1150 transitions. [2022-11-02 20:51:12,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:12,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1150 transitions. [2022-11-02 20:51:12,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 76.66666666666667) internal successors, (1150), 15 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:12,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 90.0) internal successors, (1440), 16 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:12,827 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 90.0) internal successors, (1440), 16 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:12,828 INFO L175 Difference]: Start difference. First operand has 136 places, 117 transitions, 746 flow. Second operand 15 states and 1150 transitions. [2022-11-02 20:51:12,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 125 transitions, 931 flow [2022-11-02 20:51:13,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 125 transitions, 735 flow, removed 66 selfloop flow, removed 19 redundant places. [2022-11-02 20:51:13,068 INFO L231 Difference]: Finished difference. Result has 121 places, 0 transitions, 0 flow [2022-11-02 20:51:13,068 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=121, PETRI_TRANSITIONS=0} [2022-11-02 20:51:13,069 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 39 predicate places. [2022-11-02 20:51:13,069 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 0 transitions, 0 flow [2022-11-02 20:51:13,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:13,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-02 20:51:13,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-02 20:51:13,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-02 20:51:13,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-02 20:51:13,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:51:13,074 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:13,077 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-02 20:51:13,078 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:51:13,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:51:13 BasicIcfg [2022-11-02 20:51:13,083 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:51:13,084 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:51:13,084 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:51:13,084 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:51:13,085 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:51:04" (3/4) ... [2022-11-02 20:51:13,088 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 20:51:13,096 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-02 20:51:13,096 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-02 20:51:13,096 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-02 20:51:13,102 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-02 20:51:13,103 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-02 20:51:13,103 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 20:51:13,103 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 20:51:13,142 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8eec37-8333-4506-9c14-f55487c4d530/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:51:13,142 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:51:13,143 INFO L158 Benchmark]: Toolchain (without parser) took 9563.07ms. Allocated memory was 102.8MB in the beginning and 381.7MB in the end (delta: 278.9MB). Free memory was 62.7MB in the beginning and 226.9MB in the end (delta: -164.3MB). Peak memory consumption was 114.6MB. Max. memory is 16.1GB. [2022-11-02 20:51:13,143 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 102.8MB. Free memory was 80.8MB in the beginning and 80.7MB in the end (delta: 48.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:51:13,143 INFO L158 Benchmark]: CACSL2BoogieTranslator took 582.15ms. Allocated memory is still 102.8MB. Free memory was 62.5MB in the beginning and 68.7MB in the end (delta: -6.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:51:13,144 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.19ms. Allocated memory is still 102.8MB. Free memory was 68.7MB in the beginning and 66.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:51:13,144 INFO L158 Benchmark]: Boogie Preprocessor took 67.20ms. Allocated memory is still 102.8MB. Free memory was 66.6MB in the beginning and 65.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:51:13,144 INFO L158 Benchmark]: RCFGBuilder took 446.93ms. Allocated memory is still 102.8MB. Free memory was 65.1MB in the beginning and 51.9MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 20:51:13,145 INFO L158 Benchmark]: TraceAbstraction took 8327.58ms. Allocated memory was 102.8MB in the beginning and 381.7MB in the end (delta: 278.9MB). Free memory was 51.1MB in the beginning and 230.1MB in the end (delta: -179.0MB). Peak memory consumption was 175.3MB. Max. memory is 16.1GB. [2022-11-02 20:51:13,145 INFO L158 Benchmark]: Witness Printer took 58.17ms. Allocated memory is still 381.7MB. Free memory was 230.1MB in the beginning and 226.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:51:13,147 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 102.8MB. Free memory was 80.8MB in the beginning and 80.7MB in the end (delta: 48.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 582.15ms. Allocated memory is still 102.8MB. Free memory was 62.5MB in the beginning and 68.7MB in the end (delta: -6.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.19ms. Allocated memory is still 102.8MB. Free memory was 68.7MB in the beginning and 66.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.20ms. Allocated memory is still 102.8MB. Free memory was 66.6MB in the beginning and 65.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 446.93ms. Allocated memory is still 102.8MB. Free memory was 65.1MB in the beginning and 51.9MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 8327.58ms. Allocated memory was 102.8MB in the beginning and 381.7MB in the end (delta: 278.9MB). Free memory was 51.1MB in the beginning and 230.1MB in the end (delta: -179.0MB). Peak memory consumption was 175.3MB. Max. memory is 16.1GB. * Witness Printer took 58.17ms. Allocated memory is still 381.7MB. Free memory was 230.1MB in the beginning and 226.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 113 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: 8.2s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 337 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 337 mSDsluCounter, 504 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 495 mSDsCounter, 87 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 522 IncrementalHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 87 mSolverCounterUnsat, 126 mSDtfsCounter, 522 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=746occurred in iteration=8, InterpolantAutomatonStates: 100, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 522 NumberOfCodeBlocks, 522 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 513 ConstructedInterpolants, 0 QuantifiedInterpolants, 1891 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! [2022-11-02 20:51:13,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8eec37-8333-4506-9c14-f55487c4d530/bin/uautomizer-Dbtcem3rbc/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