./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec66e0c-cb82-458a-904b-dfd63a7226ef/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec66e0c-cb82-458a-904b-dfd63a7226ef/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec66e0c-cb82-458a-904b-dfd63a7226ef/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec66e0c-cb82-458a-904b-dfd63a7226ef/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec66e0c-cb82-458a-904b-dfd63a7226ef/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec66e0c-cb82-458a-904b-dfd63a7226ef/bin/uautomizer-j4sWxH34Be --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 7912270168edfe57ed71790473a28594e3bc48002f5ead86961705c042bbf781 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:17:17,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:17:17,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:17:17,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:17:17,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:17:17,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:17:17,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:17:17,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:17:17,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:17:17,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:17:17,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:17:17,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:17:17,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:17:17,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:17:17,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:17:17,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:17:17,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:17:17,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:17:17,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:17:17,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:17:17,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:17:17,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:17:17,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:17:17,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:17:17,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:17:17,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:17:17,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:17:17,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:17:17,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:17:17,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:17:17,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:17:17,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:17:17,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:17:17,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:17:17,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:17:17,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:17:17,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:17:17,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:17:17,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:17:17,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:17:17,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:17:17,601 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec66e0c-cb82-458a-904b-dfd63a7226ef/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:17:17,654 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:17:17,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:17:17,655 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:17:17,655 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:17:17,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:17:17,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:17:17,657 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:17:17,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:17:17,657 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:17:17,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:17:17,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:17:17,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:17:17,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:17:17,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:17:17,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:17:17,659 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:17:17,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:17:17,660 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:17:17,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:17:17,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:17:17,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:17:17,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:17:17,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:17:17,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:17:17,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:17:17,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:17:17,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:17:17,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:17:17,663 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:17:17,663 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:17:17,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:17:17,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:17:17,664 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_8ec66e0c-cb82-458a-904b-dfd63a7226ef/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec66e0c-cb82-458a-904b-dfd63a7226ef/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7912270168edfe57ed71790473a28594e3bc48002f5ead86961705c042bbf781 [2021-10-21 20:17:17,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:17:17,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:17:18,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:17:18,005 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:17:18,006 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:17:18,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec66e0c-cb82-458a-904b-dfd63a7226ef/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-21 20:17:18,126 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec66e0c-cb82-458a-904b-dfd63a7226ef/bin/uautomizer-j4sWxH34Be/data/88a5082ed/a960da8ae04948c4a0aa869b6532266a/FLAGcfe214648 [2021-10-21 20:17:18,790 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:17:18,791 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec66e0c-cb82-458a-904b-dfd63a7226ef/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-21 20:17:18,817 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec66e0c-cb82-458a-904b-dfd63a7226ef/bin/uautomizer-j4sWxH34Be/data/88a5082ed/a960da8ae04948c4a0aa869b6532266a/FLAGcfe214648 [2021-10-21 20:17:19,027 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec66e0c-cb82-458a-904b-dfd63a7226ef/bin/uautomizer-j4sWxH34Be/data/88a5082ed/a960da8ae04948c4a0aa869b6532266a [2021-10-21 20:17:19,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:17:19,032 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:17:19,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:17:19,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:17:19,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:17:19,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:17:19" (1/1) ... [2021-10-21 20:17:19,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ba4e17d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:17:19, skipping insertion in model container [2021-10-21 20:17:19,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:17:19" (1/1) ... [2021-10-21 20:17:19,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:17:19,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:17:19,457 WARN L228 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_8ec66e0c-cb82-458a-904b-dfd63a7226ef/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-10-21 20:17:19,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:17:19,759 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:17:19,778 WARN L228 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_8ec66e0c-cb82-458a-904b-dfd63a7226ef/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-10-21 20:17:19,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:17:19,909 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:17:19,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:17:19 WrapperNode [2021-10-21 20:17:19,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:17:19,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:17:19,913 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:17:19,913 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:17:19,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:17:19" (1/1) ... [2021-10-21 20:17:19,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:17:19" (1/1) ... [2021-10-21 20:17:20,007 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:17:20,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:17:20,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:17:20,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:17:20,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:17:19" (1/1) ... [2021-10-21 20:17:20,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:17:19" (1/1) ... [2021-10-21 20:17:20,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:17:19" (1/1) ... [2021-10-21 20:17:20,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:17:19" (1/1) ... [2021-10-21 20:17:20,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:17:19" (1/1) ... [2021-10-21 20:17:20,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:17:19" (1/1) ... [2021-10-21 20:17:20,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:17:19" (1/1) ... [2021-10-21 20:17:20,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:17:20,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:17:20,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:17:20,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:17:20,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:17:19" (1/1) ... [2021-10-21 20:17:20,101 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:17:20,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec66e0c-cb82-458a-904b-dfd63a7226ef/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:17:20,134 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec66e0c-cb82-458a-904b-dfd63a7226ef/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:17:20,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec66e0c-cb82-458a-904b-dfd63a7226ef/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:17:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 20:17:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-21 20:17:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:17:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:17:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-21 20:17:20,201 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-21 20:17:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-21 20:17:20,201 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-21 20:17:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-21 20:17:20,202 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-21 20:17:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-10-21 20:17:20,202 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-10-21 20:17:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:17:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-21 20:17:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:17:20,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:17:20,205 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-21 20:17:20,648 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:17:20,648 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-21 20:17:20,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:17:20 BoogieIcfgContainer [2021-10-21 20:17:20,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:17:20,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:17:20,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:17:20,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:17:20,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:17:19" (1/3) ... [2021-10-21 20:17:20,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b51f435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:17:20, skipping insertion in model container [2021-10-21 20:17:20,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:17:19" (2/3) ... [2021-10-21 20:17:20,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b51f435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:17:20, skipping insertion in model container [2021-10-21 20:17:20,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:17:20" (3/3) ... [2021-10-21 20:17:20,662 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-21 20:17:20,669 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-21 20:17:20,669 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:17:20,669 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:17:20,670 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-21 20:17:20,710 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,711 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,711 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,711 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,712 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,712 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,712 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,712 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,713 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,713 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,713 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,714 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,714 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,714 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,714 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,715 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,715 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,715 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,715 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,716 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,716 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,716 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,717 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,717 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,717 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,717 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,718 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,718 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,718 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,718 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,719 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,719 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,719 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,720 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,720 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,720 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,721 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,721 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,721 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,721 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,722 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,722 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,722 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,722 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,723 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,723 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,723 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,723 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,727 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,727 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,728 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,728 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,734 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,734 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,735 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,735 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,738 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,738 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,738 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,739 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,741 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,742 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,742 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,742 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:17:20,744 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-21 20:17:20,805 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:17:20,820 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 20:17:20,822 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-21 20:17:20,845 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 110 places, 99 transitions, 218 flow [2021-10-21 20:17:20,902 INFO L129 PetriNetUnfolder]: 2/95 cut-off events. [2021-10-21 20:17:20,902 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 20:17:20,907 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 95 events. 2/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2021-10-21 20:17:20,907 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 99 transitions, 218 flow [2021-10-21 20:17:20,913 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 81 transitions, 174 flow [2021-10-21 20:17:20,945 INFO L129 PetriNetUnfolder]: 1/80 cut-off events. [2021-10-21 20:17:20,945 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 20:17:20,946 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:17:20,946 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:17:20,947 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-21 20:17:20,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:17:20,953 INFO L82 PathProgramCache]: Analyzing trace with hash -368205386, now seen corresponding path program 1 times [2021-10-21 20:17:20,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:17:20,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006507944] [2021-10-21 20:17:20,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:17:20,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:17:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:17:21,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:17:21,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:17:21,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006507944] [2021-10-21 20:17:21,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006507944] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:17:21,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:17:21,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:17:21,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820902422] [2021-10-21 20:17:21,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:17:21,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:17:21,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:17:21,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:17:21,798 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 99 [2021-10-21 20:17:21,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 81 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 82.42857142857143) internal successors, (577), 7 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:21,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:17:21,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 99 [2021-10-21 20:17:21,811 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:17:22,233 INFO L129 PetriNetUnfolder]: 81/255 cut-off events. [2021-10-21 20:17:22,233 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 20:17:22,236 INFO L84 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 255 events. 81/255 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 851 event pairs, 15 based on Foata normal form. 11/256 useless extension candidates. Maximal degree in co-relation 393. Up to 77 conditions per place. [2021-10-21 20:17:22,240 INFO L132 encePairwiseOnDemand]: 90/99 looper letters, 12 selfloop transitions, 4 changer transitions 25/107 dead transitions. [2021-10-21 20:17:22,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 107 transitions, 308 flow [2021-10-21 20:17:22,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:17:22,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-21 20:17:22,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 855 transitions. [2021-10-21 20:17:22,278 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8636363636363636 [2021-10-21 20:17:22,279 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 855 transitions. [2021-10-21 20:17:22,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 855 transitions. [2021-10-21 20:17:22,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:17:22,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 855 transitions. [2021-10-21 20:17:22,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 85.5) internal successors, (855), 10 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:22,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:22,307 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:22,310 INFO L186 Difference]: Start difference. First operand has 93 places, 81 transitions, 174 flow. Second operand 10 states and 855 transitions. [2021-10-21 20:17:22,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 107 transitions, 308 flow [2021-10-21 20:17:22,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 107 transitions, 304 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-21 20:17:22,322 INFO L242 Difference]: Finished difference. Result has 105 places, 80 transitions, 192 flow [2021-10-21 20:17:22,324 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=192, PETRI_PLACES=105, PETRI_TRANSITIONS=80} [2021-10-21 20:17:22,325 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 12 predicate places. [2021-10-21 20:17:22,326 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 80 transitions, 192 flow [2021-10-21 20:17:22,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.42857142857143) internal successors, (577), 7 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:22,327 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:17:22,327 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:17:22,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:17:22,328 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-21 20:17:22,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:17:22,329 INFO L82 PathProgramCache]: Analyzing trace with hash -995243369, now seen corresponding path program 1 times [2021-10-21 20:17:22,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:17:22,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74618465] [2021-10-21 20:17:22,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:17:22,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:17:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:17:22,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:17:22,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:17:22,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74618465] [2021-10-21 20:17:22,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74618465] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:17:22,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:17:22,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:17:22,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248699741] [2021-10-21 20:17:22,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:17:22,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:17:22,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:17:22,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:17:22,632 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 99 [2021-10-21 20:17:22,634 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 80 transitions, 192 flow. Second operand has 7 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:22,634 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:17:22,634 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 99 [2021-10-21 20:17:22,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:17:23,264 INFO L129 PetriNetUnfolder]: 208/546 cut-off events. [2021-10-21 20:17:23,264 INFO L130 PetriNetUnfolder]: For 155/276 co-relation queries the response was YES. [2021-10-21 20:17:23,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1081 conditions, 546 events. 208/546 cut-off events. For 155/276 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2619 event pairs, 12 based on Foata normal form. 16/542 useless extension candidates. Maximal degree in co-relation 1037. Up to 119 conditions per place. [2021-10-21 20:17:23,280 INFO L132 encePairwiseOnDemand]: 85/99 looper letters, 18 selfloop transitions, 14 changer transitions 56/152 dead transitions. [2021-10-21 20:17:23,280 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 152 transitions, 565 flow [2021-10-21 20:17:23,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-21 20:17:23,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-21 20:17:23,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1435 transitions. [2021-10-21 20:17:23,289 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8526440879382056 [2021-10-21 20:17:23,291 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1435 transitions. [2021-10-21 20:17:23,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1435 transitions. [2021-10-21 20:17:23,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:17:23,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1435 transitions. [2021-10-21 20:17:23,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 84.41176470588235) internal successors, (1435), 17 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:23,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 99.0) internal successors, (1782), 18 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:23,308 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 99.0) internal successors, (1782), 18 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:23,308 INFO L186 Difference]: Start difference. First operand has 105 places, 80 transitions, 192 flow. Second operand 17 states and 1435 transitions. [2021-10-21 20:17:23,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 152 transitions, 565 flow [2021-10-21 20:17:23,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 152 transitions, 499 flow, removed 28 selfloop flow, removed 9 redundant places. [2021-10-21 20:17:23,324 INFO L242 Difference]: Finished difference. Result has 121 places, 88 transitions, 314 flow [2021-10-21 20:17:23,325 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=314, PETRI_PLACES=121, PETRI_TRANSITIONS=88} [2021-10-21 20:17:23,326 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 28 predicate places. [2021-10-21 20:17:23,326 INFO L470 AbstractCegarLoop]: Abstraction has has 121 places, 88 transitions, 314 flow [2021-10-21 20:17:23,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:23,327 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:17:23,327 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:17:23,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:17:23,328 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-21 20:17:23,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:17:23,333 INFO L82 PathProgramCache]: Analyzing trace with hash 634081114, now seen corresponding path program 1 times [2021-10-21 20:17:23,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:17:23,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820570793] [2021-10-21 20:17:23,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:17:23,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:17:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:17:23,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:17:23,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:17:23,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820570793] [2021-10-21 20:17:23,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820570793] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:17:23,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:17:23,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 20:17:23,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553782237] [2021-10-21 20:17:23,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:17:23,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:17:23,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:17:23,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:17:23,604 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 99 [2021-10-21 20:17:23,605 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 88 transitions, 314 flow. Second operand has 8 states, 8 states have (on average 80.625) internal successors, (645), 8 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:23,606 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:17:23,606 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 99 [2021-10-21 20:17:23,606 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:17:23,928 INFO L129 PetriNetUnfolder]: 116/342 cut-off events. [2021-10-21 20:17:23,928 INFO L130 PetriNetUnfolder]: For 2771/3375 co-relation queries the response was YES. [2021-10-21 20:17:23,931 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1660 conditions, 342 events. 116/342 cut-off events. For 2771/3375 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1319 event pairs, 17 based on Foata normal form. 12/334 useless extension candidates. Maximal degree in co-relation 1603. Up to 121 conditions per place. [2021-10-21 20:17:23,936 INFO L132 encePairwiseOnDemand]: 89/99 looper letters, 14 selfloop transitions, 6 changer transitions 39/123 dead transitions. [2021-10-21 20:17:23,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 123 transitions, 939 flow [2021-10-21 20:17:23,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 20:17:23,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-21 20:17:23,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 923 transitions. [2021-10-21 20:17:23,943 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8475665748393021 [2021-10-21 20:17:23,946 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 923 transitions. [2021-10-21 20:17:23,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 923 transitions. [2021-10-21 20:17:23,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:17:23,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 923 transitions. [2021-10-21 20:17:23,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 83.9090909090909) internal successors, (923), 11 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:23,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 99.0) internal successors, (1188), 12 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:23,957 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 99.0) internal successors, (1188), 12 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:23,957 INFO L186 Difference]: Start difference. First operand has 121 places, 88 transitions, 314 flow. Second operand 11 states and 923 transitions. [2021-10-21 20:17:23,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 123 transitions, 939 flow [2021-10-21 20:17:23,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 123 transitions, 723 flow, removed 102 selfloop flow, removed 10 redundant places. [2021-10-21 20:17:23,982 INFO L242 Difference]: Finished difference. Result has 117 places, 80 transitions, 260 flow [2021-10-21 20:17:23,983 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=260, PETRI_PLACES=117, PETRI_TRANSITIONS=80} [2021-10-21 20:17:23,983 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 24 predicate places. [2021-10-21 20:17:23,983 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 80 transitions, 260 flow [2021-10-21 20:17:23,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 80.625) internal successors, (645), 8 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:23,984 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:17:23,985 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:17:23,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 20:17:23,985 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-21 20:17:23,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:17:23,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1551407626, now seen corresponding path program 1 times [2021-10-21 20:17:23,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:17:23,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169336409] [2021-10-21 20:17:23,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:17:23,987 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:17:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:17:24,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:17:24,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:17:24,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169336409] [2021-10-21 20:17:24,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169336409] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:17:24,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:17:24,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:17:24,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709140432] [2021-10-21 20:17:24,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:17:24,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:17:24,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:17:24,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:17:24,318 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 99 [2021-10-21 20:17:24,319 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 80 transitions, 260 flow. Second operand has 7 states, 7 states have (on average 82.57142857142857) internal successors, (578), 7 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:24,319 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:17:24,319 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 99 [2021-10-21 20:17:24,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:17:24,513 INFO L129 PetriNetUnfolder]: 48/192 cut-off events. [2021-10-21 20:17:24,513 INFO L130 PetriNetUnfolder]: For 709/826 co-relation queries the response was YES. [2021-10-21 20:17:24,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 735 conditions, 192 events. 48/192 cut-off events. For 709/826 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 527 event pairs, 10 based on Foata normal form. 6/192 useless extension candidates. Maximal degree in co-relation 677. Up to 68 conditions per place. [2021-10-21 20:17:24,517 INFO L132 encePairwiseOnDemand]: 93/99 looper letters, 14 selfloop transitions, 2 changer transitions 19/101 dead transitions. [2021-10-21 20:17:24,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 101 transitions, 542 flow [2021-10-21 20:17:24,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:17:24,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-21 20:17:24,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 766 transitions. [2021-10-21 20:17:24,522 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8597081930415263 [2021-10-21 20:17:24,522 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 766 transitions. [2021-10-21 20:17:24,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 766 transitions. [2021-10-21 20:17:24,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:17:24,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 766 transitions. [2021-10-21 20:17:24,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 85.11111111111111) internal successors, (766), 9 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:24,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 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) [2021-10-21 20:17:24,533 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 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) [2021-10-21 20:17:24,533 INFO L186 Difference]: Start difference. First operand has 117 places, 80 transitions, 260 flow. Second operand 9 states and 766 transitions. [2021-10-21 20:17:24,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 101 transitions, 542 flow [2021-10-21 20:17:24,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 101 transitions, 442 flow, removed 38 selfloop flow, removed 15 redundant places. [2021-10-21 20:17:24,545 INFO L242 Difference]: Finished difference. Result has 110 places, 80 transitions, 232 flow [2021-10-21 20:17:24,545 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=232, PETRI_PLACES=110, PETRI_TRANSITIONS=80} [2021-10-21 20:17:24,545 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 17 predicate places. [2021-10-21 20:17:24,546 INFO L470 AbstractCegarLoop]: Abstraction has has 110 places, 80 transitions, 232 flow [2021-10-21 20:17:24,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.57142857142857) internal successors, (578), 7 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:24,546 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:17:24,547 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:17:24,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 20:17:24,547 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-21 20:17:24,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:17:24,548 INFO L82 PathProgramCache]: Analyzing trace with hash 32118511, now seen corresponding path program 1 times [2021-10-21 20:17:24,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:17:24,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968328879] [2021-10-21 20:17:24,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:17:24,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:17:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:17:24,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:17:24,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:17:24,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968328879] [2021-10-21 20:17:24,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968328879] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:17:24,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:17:24,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:17:24,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183841310] [2021-10-21 20:17:24,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:17:24,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:17:24,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:17:24,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:17:24,790 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 99 [2021-10-21 20:17:24,791 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 80 transitions, 232 flow. Second operand has 7 states, 7 states have (on average 85.28571428571429) internal successors, (597), 7 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:24,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:17:24,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 99 [2021-10-21 20:17:24,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:17:24,990 INFO L129 PetriNetUnfolder]: 67/246 cut-off events. [2021-10-21 20:17:24,991 INFO L130 PetriNetUnfolder]: For 595/666 co-relation queries the response was YES. [2021-10-21 20:17:25,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 766 conditions, 246 events. 67/246 cut-off events. For 595/666 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 878 event pairs, 22 based on Foata normal form. 8/241 useless extension candidates. Maximal degree in co-relation 719. Up to 78 conditions per place. [2021-10-21 20:17:25,003 INFO L132 encePairwiseOnDemand]: 91/99 looper letters, 9 selfloop transitions, 4 changer transitions 18/100 dead transitions. [2021-10-21 20:17:25,004 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 100 transitions, 445 flow [2021-10-21 20:17:25,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:17:25,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-21 20:17:25,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 873 transitions. [2021-10-21 20:17:25,009 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8818181818181818 [2021-10-21 20:17:25,009 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 873 transitions. [2021-10-21 20:17:25,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 873 transitions. [2021-10-21 20:17:25,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:17:25,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 873 transitions. [2021-10-21 20:17:25,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.3) internal successors, (873), 10 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:25,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:25,019 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:25,020 INFO L186 Difference]: Start difference. First operand has 110 places, 80 transitions, 232 flow. Second operand 10 states and 873 transitions. [2021-10-21 20:17:25,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 100 transitions, 445 flow [2021-10-21 20:17:25,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 100 transitions, 411 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-10-21 20:17:25,028 INFO L242 Difference]: Finished difference. Result has 113 places, 80 transitions, 246 flow [2021-10-21 20:17:25,029 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=246, PETRI_PLACES=113, PETRI_TRANSITIONS=80} [2021-10-21 20:17:25,029 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 20 predicate places. [2021-10-21 20:17:25,029 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 80 transitions, 246 flow [2021-10-21 20:17:25,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.28571428571429) internal successors, (597), 7 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:25,030 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:17:25,030 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:17:25,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 20:17:25,031 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-21 20:17:25,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:17:25,032 INFO L82 PathProgramCache]: Analyzing trace with hash 542307604, now seen corresponding path program 1 times [2021-10-21 20:17:25,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:17:25,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913553600] [2021-10-21 20:17:25,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:17:25,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:17:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:17:25,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:17:25,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:17:25,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913553600] [2021-10-21 20:17:25,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913553600] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:17:25,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:17:25,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 20:17:25,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244514435] [2021-10-21 20:17:25,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:17:25,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:17:25,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:17:25,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:17:25,208 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 99 [2021-10-21 20:17:25,209 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 80 transitions, 246 flow. Second operand has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:25,210 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:17:25,210 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 99 [2021-10-21 20:17:25,210 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:17:25,550 INFO L129 PetriNetUnfolder]: 589/1220 cut-off events. [2021-10-21 20:17:25,551 INFO L130 PetriNetUnfolder]: For 1053/1066 co-relation queries the response was YES. [2021-10-21 20:17:25,562 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2847 conditions, 1220 events. 589/1220 cut-off events. For 1053/1066 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7728 event pairs, 98 based on Foata normal form. 0/1105 useless extension candidates. Maximal degree in co-relation 2797. Up to 339 conditions per place. [2021-10-21 20:17:25,575 INFO L132 encePairwiseOnDemand]: 88/99 looper letters, 29 selfloop transitions, 20 changer transitions 0/117 dead transitions. [2021-10-21 20:17:25,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 117 transitions, 418 flow [2021-10-21 20:17:25,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:17:25,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-21 20:17:25,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 891 transitions. [2021-10-21 20:17:25,579 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9 [2021-10-21 20:17:25,579 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 891 transitions. [2021-10-21 20:17:25,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 891 transitions. [2021-10-21 20:17:25,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:17:25,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 891 transitions. [2021-10-21 20:17:25,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 89.1) internal successors, (891), 10 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:25,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:25,587 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:25,588 INFO L186 Difference]: Start difference. First operand has 113 places, 80 transitions, 246 flow. Second operand 10 states and 891 transitions. [2021-10-21 20:17:25,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 117 transitions, 418 flow [2021-10-21 20:17:25,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 117 transitions, 392 flow, removed 8 selfloop flow, removed 10 redundant places. [2021-10-21 20:17:25,598 INFO L242 Difference]: Finished difference. Result has 112 places, 98 transitions, 363 flow [2021-10-21 20:17:25,598 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=363, PETRI_PLACES=112, PETRI_TRANSITIONS=98} [2021-10-21 20:17:25,598 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 19 predicate places. [2021-10-21 20:17:25,598 INFO L470 AbstractCegarLoop]: Abstraction has has 112 places, 98 transitions, 363 flow [2021-10-21 20:17:25,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:25,599 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:17:25,599 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:17:25,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 20:17:25,600 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-21 20:17:25,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:17:25,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1379774864, now seen corresponding path program 1 times [2021-10-21 20:17:25,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:17:25,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193949052] [2021-10-21 20:17:25,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:17:25,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:17:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:17:25,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:17:25,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:17:25,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193949052] [2021-10-21 20:17:25,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193949052] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:17:25,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:17:25,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:17:25,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756677153] [2021-10-21 20:17:25,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:17:25,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:17:25,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:17:25,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:17:25,762 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 99 [2021-10-21 20:17:25,764 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 98 transitions, 363 flow. Second operand has 7 states, 7 states have (on average 85.14285714285714) internal successors, (596), 7 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:25,764 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:17:25,764 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 99 [2021-10-21 20:17:25,764 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:17:26,287 INFO L129 PetriNetUnfolder]: 615/1287 cut-off events. [2021-10-21 20:17:26,287 INFO L130 PetriNetUnfolder]: For 3670/4703 co-relation queries the response was YES. [2021-10-21 20:17:26,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4774 conditions, 1287 events. 615/1287 cut-off events. For 3670/4703 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8492 event pairs, 45 based on Foata normal form. 79/1278 useless extension candidates. Maximal degree in co-relation 4726. Up to 630 conditions per place. [2021-10-21 20:17:26,315 INFO L132 encePairwiseOnDemand]: 88/99 looper letters, 34 selfloop transitions, 38 changer transitions 0/140 dead transitions. [2021-10-21 20:17:26,315 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 140 transitions, 787 flow [2021-10-21 20:17:26,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 20:17:26,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-21 20:17:26,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1160 transitions. [2021-10-21 20:17:26,321 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9013209013209014 [2021-10-21 20:17:26,321 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1160 transitions. [2021-10-21 20:17:26,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1160 transitions. [2021-10-21 20:17:26,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:17:26,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1160 transitions. [2021-10-21 20:17:26,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 89.23076923076923) internal successors, (1160), 13 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:26,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 99.0) internal successors, (1386), 14 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:26,333 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 99.0) internal successors, (1386), 14 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:26,333 INFO L186 Difference]: Start difference. First operand has 112 places, 98 transitions, 363 flow. Second operand 13 states and 1160 transitions. [2021-10-21 20:17:26,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 140 transitions, 787 flow [2021-10-21 20:17:26,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 140 transitions, 785 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-21 20:17:26,345 INFO L242 Difference]: Finished difference. Result has 129 places, 118 transitions, 654 flow [2021-10-21 20:17:26,345 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=654, PETRI_PLACES=129, PETRI_TRANSITIONS=118} [2021-10-21 20:17:26,345 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 36 predicate places. [2021-10-21 20:17:26,346 INFO L470 AbstractCegarLoop]: Abstraction has has 129 places, 118 transitions, 654 flow [2021-10-21 20:17:26,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.14285714285714) internal successors, (596), 7 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:26,346 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:17:26,347 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:17:26,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 20:17:26,347 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-21 20:17:26,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:17:26,348 INFO L82 PathProgramCache]: Analyzing trace with hash 219107433, now seen corresponding path program 1 times [2021-10-21 20:17:26,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:17:26,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743382445] [2021-10-21 20:17:26,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:17:26,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:17:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:17:26,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:17:26,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:17:26,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743382445] [2021-10-21 20:17:26,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743382445] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:17:26,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:17:26,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 20:17:26,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818442806] [2021-10-21 20:17:26,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:17:26,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:17:26,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:17:26,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:17:26,530 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 99 [2021-10-21 20:17:26,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 118 transitions, 654 flow. Second operand has 8 states, 8 states have (on average 85.125) internal successors, (681), 8 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:26,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:17:26,532 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 99 [2021-10-21 20:17:26,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:17:27,174 INFO L129 PetriNetUnfolder]: 573/1206 cut-off events. [2021-10-21 20:17:27,174 INFO L130 PetriNetUnfolder]: For 10369/12475 co-relation queries the response was YES. [2021-10-21 20:17:27,189 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6441 conditions, 1206 events. 573/1206 cut-off events. For 10369/12475 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8009 event pairs, 10 based on Foata normal form. 114/1238 useless extension candidates. Maximal degree in co-relation 6385. Up to 617 conditions per place. [2021-10-21 20:17:27,203 INFO L132 encePairwiseOnDemand]: 88/99 looper letters, 28 selfloop transitions, 58 changer transitions 12/166 dead transitions. [2021-10-21 20:17:27,204 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 166 transitions, 1356 flow [2021-10-21 20:17:27,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 20:17:27,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-21 20:17:27,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1429 transitions. [2021-10-21 20:17:27,211 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9021464646464646 [2021-10-21 20:17:27,211 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1429 transitions. [2021-10-21 20:17:27,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1429 transitions. [2021-10-21 20:17:27,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:17:27,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1429 transitions. [2021-10-21 20:17:27,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 89.3125) internal successors, (1429), 16 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:27,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 99.0) internal successors, (1683), 17 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:27,225 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 99.0) internal successors, (1683), 17 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:27,225 INFO L186 Difference]: Start difference. First operand has 129 places, 118 transitions, 654 flow. Second operand 16 states and 1429 transitions. [2021-10-21 20:17:27,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 166 transitions, 1356 flow [2021-10-21 20:17:27,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 166 transitions, 1253 flow, removed 42 selfloop flow, removed 4 redundant places. [2021-10-21 20:17:27,268 INFO L242 Difference]: Finished difference. Result has 144 places, 144 transitions, 1020 flow [2021-10-21 20:17:27,268 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1020, PETRI_PLACES=144, PETRI_TRANSITIONS=144} [2021-10-21 20:17:27,268 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 51 predicate places. [2021-10-21 20:17:27,269 INFO L470 AbstractCegarLoop]: Abstraction has has 144 places, 144 transitions, 1020 flow [2021-10-21 20:17:27,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.125) internal successors, (681), 8 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:27,269 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:17:27,270 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:17:27,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 20:17:27,271 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-21 20:17:27,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:17:27,272 INFO L82 PathProgramCache]: Analyzing trace with hash -268991016, now seen corresponding path program 1 times [2021-10-21 20:17:27,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:17:27,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588296863] [2021-10-21 20:17:27,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:17:27,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:17:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:17:27,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:17:27,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:17:27,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588296863] [2021-10-21 20:17:27,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588296863] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:17:27,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:17:27,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:17:27,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449089622] [2021-10-21 20:17:27,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:17:27,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:17:27,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:17:27,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:17:27,427 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 99 [2021-10-21 20:17:27,428 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 144 transitions, 1020 flow. Second operand has 7 states, 7 states have (on average 85.57142857142857) internal successors, (599), 7 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:27,428 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:17:27,429 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 99 [2021-10-21 20:17:27,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:17:27,853 INFO L129 PetriNetUnfolder]: 525/1528 cut-off events. [2021-10-21 20:17:27,853 INFO L130 PetriNetUnfolder]: For 10817/11177 co-relation queries the response was YES. [2021-10-21 20:17:27,870 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6711 conditions, 1528 events. 525/1528 cut-off events. For 10817/11177 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 12738 event pairs, 8 based on Foata normal form. 6/1457 useless extension candidates. Maximal degree in co-relation 6649. Up to 486 conditions per place. [2021-10-21 20:17:27,881 INFO L132 encePairwiseOnDemand]: 93/99 looper letters, 15 selfloop transitions, 2 changer transitions 4/154 dead transitions. [2021-10-21 20:17:27,881 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 154 transitions, 1116 flow [2021-10-21 20:17:27,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:17:27,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-21 20:17:27,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 610 transitions. [2021-10-21 20:17:27,885 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8802308802308803 [2021-10-21 20:17:27,885 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 610 transitions. [2021-10-21 20:17:27,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 610 transitions. [2021-10-21 20:17:27,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:17:27,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 610 transitions. [2021-10-21 20:17:27,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.14285714285714) internal successors, (610), 7 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:27,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 99.0) internal successors, (792), 8 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:27,895 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 99.0) internal successors, (792), 8 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:27,895 INFO L186 Difference]: Start difference. First operand has 144 places, 144 transitions, 1020 flow. Second operand 7 states and 610 transitions. [2021-10-21 20:17:27,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 154 transitions, 1116 flow [2021-10-21 20:17:28,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 154 transitions, 803 flow, removed 114 selfloop flow, removed 11 redundant places. [2021-10-21 20:17:28,065 INFO L242 Difference]: Finished difference. Result has 144 places, 145 transitions, 734 flow [2021-10-21 20:17:28,065 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=734, PETRI_PLACES=144, PETRI_TRANSITIONS=145} [2021-10-21 20:17:28,066 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 51 predicate places. [2021-10-21 20:17:28,066 INFO L470 AbstractCegarLoop]: Abstraction has has 144 places, 145 transitions, 734 flow [2021-10-21 20:17:28,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.57142857142857) internal successors, (599), 7 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:28,067 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:17:28,067 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:17:28,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-21 20:17:28,068 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-21 20:17:28,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:17:28,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1432568278, now seen corresponding path program 2 times [2021-10-21 20:17:28,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:17:28,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329962678] [2021-10-21 20:17:28,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:17:28,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:17:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:17:28,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:17:28,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:17:28,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329962678] [2021-10-21 20:17:28,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329962678] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:17:28,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:17:28,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-21 20:17:28,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162856866] [2021-10-21 20:17:28,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 20:17:28,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:17:28,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 20:17:28,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:17:28,212 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 99 [2021-10-21 20:17:28,213 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 145 transitions, 734 flow. Second operand has 9 states, 9 states have (on average 85.11111111111111) internal successors, (766), 9 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:28,213 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:17:28,213 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 99 [2021-10-21 20:17:28,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:17:28,950 INFO L129 PetriNetUnfolder]: 836/1784 cut-off events. [2021-10-21 20:17:28,950 INFO L130 PetriNetUnfolder]: For 3520/5093 co-relation queries the response was YES. [2021-10-21 20:17:28,970 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6342 conditions, 1784 events. 836/1784 cut-off events. For 3520/5093 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 13898 event pairs, 2 based on Foata normal form. 202/1861 useless extension candidates. Maximal degree in co-relation 6312. Up to 260 conditions per place. [2021-10-21 20:17:28,975 INFO L132 encePairwiseOnDemand]: 88/99 looper letters, 4 selfloop transitions, 19 changer transitions 89/180 dead transitions. [2021-10-21 20:17:28,975 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 180 transitions, 1195 flow [2021-10-21 20:17:29,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-21 20:17:29,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-21 20:17:29,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1678 transitions. [2021-10-21 20:17:29,018 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8920786815523658 [2021-10-21 20:17:29,018 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1678 transitions. [2021-10-21 20:17:29,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1678 transitions. [2021-10-21 20:17:29,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:17:29,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1678 transitions. [2021-10-21 20:17:29,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 88.3157894736842) internal successors, (1678), 19 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:29,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 99.0) internal successors, (1980), 20 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:29,031 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 99.0) internal successors, (1980), 20 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:29,031 INFO L186 Difference]: Start difference. First operand has 144 places, 145 transitions, 734 flow. Second operand 19 states and 1678 transitions. [2021-10-21 20:17:29,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 180 transitions, 1195 flow [2021-10-21 20:17:29,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 180 transitions, 1172 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-10-21 20:17:29,088 INFO L242 Difference]: Finished difference. Result has 159 places, 91 transitions, 382 flow [2021-10-21 20:17:29,089 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=382, PETRI_PLACES=159, PETRI_TRANSITIONS=91} [2021-10-21 20:17:29,089 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 66 predicate places. [2021-10-21 20:17:29,090 INFO L470 AbstractCegarLoop]: Abstraction has has 159 places, 91 transitions, 382 flow [2021-10-21 20:17:29,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 85.11111111111111) internal successors, (766), 9 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:29,091 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:17:29,091 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:17:29,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-21 20:17:29,091 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-21 20:17:29,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:17:29,092 INFO L82 PathProgramCache]: Analyzing trace with hash -724604003, now seen corresponding path program 1 times [2021-10-21 20:17:29,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:17:29,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207178305] [2021-10-21 20:17:29,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:17:29,093 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:17:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:17:29,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:17:29,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:17:29,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207178305] [2021-10-21 20:17:29,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207178305] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:17:29,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:17:29,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:17:29,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264391439] [2021-10-21 20:17:29,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:17:29,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:17:29,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:17:29,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:17:29,227 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 99 [2021-10-21 20:17:29,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 91 transitions, 382 flow. Second operand has 7 states, 7 states have (on average 81.28571428571429) internal successors, (569), 7 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:29,228 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:17:29,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 99 [2021-10-21 20:17:29,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:17:29,373 INFO L129 PetriNetUnfolder]: 35/208 cut-off events. [2021-10-21 20:17:29,374 INFO L130 PetriNetUnfolder]: For 332/353 co-relation queries the response was YES. [2021-10-21 20:17:29,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 208 events. 35/208 cut-off events. For 332/353 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 758 event pairs, 0 based on Foata normal form. 2/200 useless extension candidates. Maximal degree in co-relation 484. Up to 30 conditions per place. [2021-10-21 20:17:29,376 INFO L132 encePairwiseOnDemand]: 88/99 looper letters, 0 selfloop transitions, 0 changer transitions 92/92 dead transitions. [2021-10-21 20:17:29,377 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 92 transitions, 438 flow [2021-10-21 20:17:29,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:17:29,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-21 20:17:29,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 651 transitions. [2021-10-21 20:17:29,379 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.821969696969697 [2021-10-21 20:17:29,379 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 651 transitions. [2021-10-21 20:17:29,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 651 transitions. [2021-10-21 20:17:29,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:17:29,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 651 transitions. [2021-10-21 20:17:29,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 81.375) internal successors, (651), 8 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:29,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 99.0) internal successors, (891), 9 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:29,385 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 99.0) internal successors, (891), 9 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:29,385 INFO L186 Difference]: Start difference. First operand has 159 places, 91 transitions, 382 flow. Second operand 8 states and 651 transitions. [2021-10-21 20:17:29,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 92 transitions, 438 flow [2021-10-21 20:17:29,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 92 transitions, 286 flow, removed 36 selfloop flow, removed 33 redundant places. [2021-10-21 20:17:29,390 INFO L242 Difference]: Finished difference. Result has 103 places, 0 transitions, 0 flow [2021-10-21 20:17:29,391 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=103, PETRI_TRANSITIONS=0} [2021-10-21 20:17:29,391 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 10 predicate places. [2021-10-21 20:17:29,391 INFO L470 AbstractCegarLoop]: Abstraction has has 103 places, 0 transitions, 0 flow [2021-10-21 20:17:29,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.28571428571429) internal successors, (569), 7 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:17:29,395 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:17:29,396 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-21 20:17:29,396 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-21 20:17:29,396 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-21 20:17:29,396 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-21 20:17:29,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-21 20:17:29,403 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-21 20:17:29,404 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:17:29,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:17:29 BasicIcfg [2021-10-21 20:17:29,407 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:17:29,407 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:17:29,407 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:17:29,408 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:17:29,408 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:17:20" (3/4) ... [2021-10-21 20:17:29,412 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:17:29,419 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-21 20:17:29,419 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-21 20:17:29,420 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-21 20:17:29,420 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2021-10-21 20:17:29,426 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-21 20:17:29,426 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 20:17:29,426 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:17:29,427 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:17:29,467 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec66e0c-cb82-458a-904b-dfd63a7226ef/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:17:29,468 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:17:29,469 INFO L168 Benchmark]: Toolchain (without parser) took 10436.19 ms. Allocated memory was 121.6 MB in the beginning and 174.1 MB in the end (delta: 52.4 MB). Free memory was 85.7 MB in the beginning and 85.6 MB in the end (delta: 159.2 kB). Peak memory consumption was 51.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:17:29,470 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 86.0 MB. Free memory was 57.6 MB in the beginning and 57.6 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:17:29,471 INFO L168 Benchmark]: CACSL2BoogieTranslator took 876.41 ms. Allocated memory is still 121.6 MB. Free memory was 85.7 MB in the beginning and 87.8 MB in the end (delta: -2.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:17:29,471 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.72 ms. Allocated memory is still 121.6 MB. Free memory was 87.8 MB in the beginning and 85.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:17:29,472 INFO L168 Benchmark]: Boogie Preprocessor took 65.87 ms. Allocated memory is still 121.6 MB. Free memory was 85.7 MB in the beginning and 84.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:17:29,472 INFO L168 Benchmark]: RCFGBuilder took 576.64 ms. Allocated memory is still 121.6 MB. Free memory was 84.4 MB in the beginning and 71.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:17:29,473 INFO L168 Benchmark]: TraceAbstraction took 8753.22 ms. Allocated memory was 121.6 MB in the beginning and 174.1 MB in the end (delta: 52.4 MB). Free memory was 71.1 MB in the beginning and 88.7 MB in the end (delta: -17.7 MB). Peak memory consumption was 37.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:17:29,473 INFO L168 Benchmark]: Witness Printer took 60.49 ms. Allocated memory is still 174.1 MB. Free memory was 88.7 MB in the beginning and 85.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:17:29,476 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 86.0 MB. Free memory was 57.6 MB in the beginning and 57.6 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 876.41 ms. Allocated memory is still 121.6 MB. Free memory was 85.7 MB in the beginning and 87.8 MB in the end (delta: -2.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 94.72 ms. Allocated memory is still 121.6 MB. Free memory was 87.8 MB in the beginning and 85.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.87 ms. Allocated memory is still 121.6 MB. Free memory was 85.7 MB in the beginning and 84.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 576.64 ms. Allocated memory is still 121.6 MB. Free memory was 84.4 MB in the beginning and 71.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8753.22 ms. Allocated memory was 121.6 MB in the beginning and 174.1 MB in the end (delta: 52.4 MB). Free memory was 71.1 MB in the beginning and 88.7 MB in the end (delta: -17.7 MB). Peak memory consumption was 37.3 MB. Max. memory is 16.1 GB. * Witness Printer took 60.49 ms. Allocated memory is still 174.1 MB. Free memory was 88.7 MB in the beginning and 85.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 128 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 31.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8603.5ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 5514.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 90.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 138 SDtfs, 490 SDslu, 482 SDs, 0 SdLazy, 641 SolverSat, 183 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 682.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 162 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 1781.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1020occurred in iteration=8, InterpolantAutomatonStates: 130, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 72.0ms SsaConstructionTime, 400.4ms SatisfiabilityAnalysisTime, 2117.1ms InterpolantComputationTime, 707 NumberOfCodeBlocks, 707 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 696 ConstructedInterpolants, 0 QuantifiedInterpolants, 3036 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-21 20:17:29,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec66e0c-cb82-458a-904b-dfd63a7226ef/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...