./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69132792-a97b-45ba-a611-33075abdbaee/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69132792-a97b-45ba-a611-33075abdbaee/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69132792-a97b-45ba-a611-33075abdbaee/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69132792-a97b-45ba-a611-33075abdbaee/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69132792-a97b-45ba-a611-33075abdbaee/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69132792-a97b-45ba-a611-33075abdbaee/bin/uautomizer-GMMbpWq8iD --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 b8cdc72d9fd1f9edaca42b89520064daf5a921bac8001b0484fc3c068bd0ad1e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:26:34,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:26:34,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:26:34,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:26:34,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:26:34,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:26:34,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:26:34,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:26:34,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:26:34,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:26:34,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:26:34,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:26:34,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:26:34,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:26:34,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:26:34,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:26:34,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:26:34,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:26:34,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:26:34,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:26:34,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:26:34,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:26:34,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:26:34,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:26:34,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:26:34,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:26:34,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:26:34,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:26:34,924 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:26:34,926 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:26:34,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:26:34,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:26:34,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:26:34,933 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:26:34,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:26:34,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:26:34,936 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:26:34,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:26:34,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:26:34,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:26:34,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:26:34,941 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69132792-a97b-45ba-a611-33075abdbaee/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:26:34,998 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:26:34,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:26:34,999 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:26:35,007 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:26:35,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:26:35,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:26:35,010 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:26:35,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:26:35,010 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:26:35,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:26:35,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:26:35,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:26:35,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:26:35,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:26:35,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:26:35,014 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:26:35,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:26:35,014 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:26:35,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:26:35,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:26:35,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:26:35,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:26:35,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:26:35,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:26:35,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:26:35,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:26:35,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:26:35,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:26:35,017 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:26:35,020 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:26:35,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:26:35,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:26:35,021 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_69132792-a97b-45ba-a611-33075abdbaee/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69132792-a97b-45ba-a611-33075abdbaee/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8cdc72d9fd1f9edaca42b89520064daf5a921bac8001b0484fc3c068bd0ad1e [2021-10-28 23:26:35,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:26:35,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:26:35,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:26:35,484 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:26:35,485 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:26:35,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69132792-a97b-45ba-a611-33075abdbaee/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2021-10-28 23:26:35,587 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69132792-a97b-45ba-a611-33075abdbaee/bin/uautomizer-GMMbpWq8iD/data/363dd4756/ed78dcf17a164c8d9581aa9812e3b841/FLAG81c960024 [2021-10-28 23:26:36,295 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:26:36,295 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69132792-a97b-45ba-a611-33075abdbaee/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2021-10-28 23:26:36,330 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69132792-a97b-45ba-a611-33075abdbaee/bin/uautomizer-GMMbpWq8iD/data/363dd4756/ed78dcf17a164c8d9581aa9812e3b841/FLAG81c960024 [2021-10-28 23:26:36,555 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69132792-a97b-45ba-a611-33075abdbaee/bin/uautomizer-GMMbpWq8iD/data/363dd4756/ed78dcf17a164c8d9581aa9812e3b841 [2021-10-28 23:26:36,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:26:36,559 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:26:36,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:26:36,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:26:36,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:26:36,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:26:36" (1/1) ... [2021-10-28 23:26:36,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a38a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:36, skipping insertion in model container [2021-10-28 23:26:36,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:26:36" (1/1) ... [2021-10-28 23:26:36,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:26:36,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:26:36,832 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_69132792-a97b-45ba-a611-33075abdbaee/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i[830,843] [2021-10-28 23:26:37,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:26:37,156 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:26:37,180 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_69132792-a97b-45ba-a611-33075abdbaee/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i[830,843] [2021-10-28 23:26:37,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:26:37,324 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:26:37,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:37 WrapperNode [2021-10-28 23:26:37,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:26:37,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:26:37,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:26:37,327 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:26:37,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:37" (1/1) ... [2021-10-28 23:26:37,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:37" (1/1) ... [2021-10-28 23:26:37,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:26:37,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:26:37,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:26:37,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:26:37,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:37" (1/1) ... [2021-10-28 23:26:37,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:37" (1/1) ... [2021-10-28 23:26:37,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:37" (1/1) ... [2021-10-28 23:26:37,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:37" (1/1) ... [2021-10-28 23:26:37,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:37" (1/1) ... [2021-10-28 23:26:37,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:37" (1/1) ... [2021-10-28 23:26:37,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:37" (1/1) ... [2021-10-28 23:26:37,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:26:37,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:26:37,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:26:37,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:26:37,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:37" (1/1) ... [2021-10-28 23:26:37,501 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:26:37,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69132792-a97b-45ba-a611-33075abdbaee/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:37,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69132792-a97b-45ba-a611-33075abdbaee/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:26:37,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69132792-a97b-45ba-a611-33075abdbaee/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:26:37,592 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2021-10-28 23:26:37,592 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2021-10-28 23:26:37,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:26:37,593 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-10-28 23:26:37,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:26:37,593 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2021-10-28 23:26:37,593 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2021-10-28 23:26:37,594 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-10-28 23:26:37,594 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-10-28 23:26:37,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:26:37,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:26:37,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:26:37,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:26:37,597 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 23:26:38,219 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:26:38,219 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-28 23:26:38,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:26:38 BoogieIcfgContainer [2021-10-28 23:26:38,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:26:38,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:26:38,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:26:38,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:26:38,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:26:36" (1/3) ... [2021-10-28 23:26:38,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4f53df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:26:38, skipping insertion in model container [2021-10-28 23:26:38,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:37" (2/3) ... [2021-10-28 23:26:38,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4f53df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:26:38, skipping insertion in model container [2021-10-28 23:26:38,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:26:38" (3/3) ... [2021-10-28 23:26:38,244 INFO L111 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2021-10-28 23:26:38,251 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 23:26:38,251 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:26:38,252 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-28 23:26:38,252 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 23:26:38,325 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,326 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,326 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,326 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,327 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,327 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,327 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,328 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,328 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,329 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,331 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,332 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,332 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,333 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,334 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,334 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,334 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,336 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,336 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,337 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~y~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,337 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,338 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~y~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,338 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,339 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,339 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,340 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,341 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,341 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,342 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,343 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,344 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~y~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,344 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~y~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,345 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,345 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~y~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,345 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,346 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,346 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~y~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,346 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,346 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,347 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,347 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,347 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,347 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,348 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,348 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,348 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,348 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,349 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,349 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,349 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,350 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,350 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,351 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,351 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,378 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,379 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,379 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,379 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,379 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,380 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,380 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,380 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,381 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,381 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1_~x~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,381 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,381 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1_~x~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,381 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,382 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,382 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,382 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,382 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,382 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1_~y~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,383 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,383 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1_~y~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,383 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,383 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,384 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,384 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,384 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,384 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,385 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#t~nondet13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,385 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#t~nondet13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,385 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#t~nondet13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,385 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#t~nondet13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,385 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1_~x~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,386 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1_~x~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,386 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1_~y~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,386 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1_~y~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,387 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1_~x~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,387 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1_~y~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,387 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,387 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1_~x~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,387 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1_~y~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,388 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,388 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,388 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,388 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,388 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,389 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,389 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,389 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,389 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,391 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,391 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,391 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,392 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,392 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,392 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,394 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,395 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,395 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,395 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,396 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,396 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,396 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,397 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,397 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,397 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,398 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,398 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork2_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,399 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,399 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork2_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,399 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,399 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,400 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork2_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,400 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork2_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,400 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork2_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,400 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork2_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,402 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,402 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,402 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,403 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,403 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,403 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,404 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,404 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,404 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,404 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,405 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,405 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,405 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork2_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,405 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork2_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,406 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork2_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,406 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork2_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,406 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,407 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,408 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,408 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,408 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork2_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,408 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork2_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,413 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,413 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~y~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,413 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,414 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,414 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,414 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,415 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,416 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,416 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,416 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,416 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,422 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,422 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,423 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#t~nondet13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,423 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,423 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,423 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,424 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,424 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1_~y~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,424 WARN L313 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,424 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,424 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,425 WARN L313 ript$VariableManager]: TermVariabe t3_funThread1of1ForFork1_~x~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,427 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,428 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,428 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,428 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork2_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,428 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,429 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,429 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,429 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,429 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:26:38,435 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-28 23:26:38,515 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:26:38,523 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 [2021-10-28 23:26:38,524 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-10-28 23:26:38,547 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 158 places, 153 transitions, 321 flow [2021-10-28 23:26:38,642 INFO L129 PetriNetUnfolder]: 5/150 cut-off events. [2021-10-28 23:26:38,643 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 23:26:38,650 INFO L84 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 150 events. 5/150 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 240 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 118. Up to 2 conditions per place. [2021-10-28 23:26:38,650 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 153 transitions, 321 flow [2021-10-28 23:26:38,658 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 150 transitions, 309 flow [2021-10-28 23:26:38,700 INFO L129 PetriNetUnfolder]: 2/109 cut-off events. [2021-10-28 23:26:38,700 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 23:26:38,701 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:26:38,701 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:38,702 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-28 23:26:38,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:38,717 INFO L85 PathProgramCache]: Analyzing trace with hash 798123703, now seen corresponding path program 1 times [2021-10-28 23:26:38,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:38,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790806097] [2021-10-28 23:26:38,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:38,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:39,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:39,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:39,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790806097] [2021-10-28 23:26:39,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790806097] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:26:39,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:26:39,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:26:39,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776078579] [2021-10-28 23:26:39,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:26:39,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:39,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:26:39,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:26:39,353 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 153 [2021-10-28 23:26:39,365 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 150 transitions, 309 flow. Second operand has 8 states, 8 states have (on average 127.375) internal successors, (1019), 8 states have internal predecessors, (1019), 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) [2021-10-28 23:26:39,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:26:39,366 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 153 [2021-10-28 23:26:39,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:26:40,608 INFO L129 PetriNetUnfolder]: 961/2366 cut-off events. [2021-10-28 23:26:40,609 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-28 23:26:40,634 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3844 conditions, 2366 events. 961/2366 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 18943 event pairs, 151 based on Foata normal form. 495/2778 useless extension candidates. Maximal degree in co-relation 3799. Up to 745 conditions per place. [2021-10-28 23:26:40,668 INFO L132 encePairwiseOnDemand]: 139/153 looper letters, 81 selfloop transitions, 21 changer transitions 0/225 dead transitions. [2021-10-28 23:26:40,669 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 225 transitions, 666 flow [2021-10-28 23:26:40,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 23:26:40,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-28 23:26:40,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2164 transitions. [2021-10-28 23:26:40,706 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8839869281045751 [2021-10-28 23:26:40,707 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2164 transitions. [2021-10-28 23:26:40,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2164 transitions. [2021-10-28 23:26:40,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:26:40,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2164 transitions. [2021-10-28 23:26:40,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 135.25) internal successors, (2164), 16 states have internal predecessors, (2164), 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) [2021-10-28 23:26:40,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 153.0) internal successors, (2601), 17 states have internal predecessors, (2601), 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) [2021-10-28 23:26:40,750 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 153.0) internal successors, (2601), 17 states have internal predecessors, (2601), 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) [2021-10-28 23:26:40,752 INFO L186 Difference]: Start difference. First operand has 155 places, 150 transitions, 309 flow. Second operand 16 states and 2164 transitions. [2021-10-28 23:26:40,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 225 transitions, 666 flow [2021-10-28 23:26:40,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 225 transitions, 662 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-28 23:26:40,769 INFO L242 Difference]: Finished difference. Result has 168 places, 161 transitions, 404 flow [2021-10-28 23:26:40,772 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=404, PETRI_PLACES=168, PETRI_TRANSITIONS=161} [2021-10-28 23:26:40,774 INFO L334 CegarLoopForPetriNet]: 155 programPoint places, 13 predicate places. [2021-10-28 23:26:40,775 INFO L470 AbstractCegarLoop]: Abstraction has has 168 places, 161 transitions, 404 flow [2021-10-28 23:26:40,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 127.375) internal successors, (1019), 8 states have internal predecessors, (1019), 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) [2021-10-28 23:26:40,776 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:26:40,776 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] [2021-10-28 23:26:40,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:26:40,777 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-28 23:26:40,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:40,778 INFO L85 PathProgramCache]: Analyzing trace with hash 94512301, now seen corresponding path program 1 times [2021-10-28 23:26:40,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:40,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101619444] [2021-10-28 23:26:40,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:40,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:41,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:41,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:41,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101619444] [2021-10-28 23:26:41,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101619444] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:26:41,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:26:41,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:26:41,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561427089] [2021-10-28 23:26:41,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:26:41,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:41,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:26:41,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:26:41,214 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 153 [2021-10-28 23:26:41,217 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 161 transitions, 404 flow. Second operand has 8 states, 8 states have (on average 122.375) internal successors, (979), 8 states have internal predecessors, (979), 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) [2021-10-28 23:26:41,217 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:26:41,217 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 153 [2021-10-28 23:26:41,217 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:26:43,808 INFO L129 PetriNetUnfolder]: 2816/8902 cut-off events. [2021-10-28 23:26:43,809 INFO L130 PetriNetUnfolder]: For 1807/1811 co-relation queries the response was YES. [2021-10-28 23:26:43,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15357 conditions, 8902 events. 2816/8902 cut-off events. For 1807/1811 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 101745 event pairs, 1026 based on Foata normal form. 2/8386 useless extension candidates. Maximal degree in co-relation 15304. Up to 1732 conditions per place. [2021-10-28 23:26:44,047 INFO L132 encePairwiseOnDemand]: 139/153 looper letters, 103 selfloop transitions, 69 changer transitions 0/297 dead transitions. [2021-10-28 23:26:44,047 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 297 transitions, 1213 flow [2021-10-28 23:26:44,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 23:26:44,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-28 23:26:44,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2058 transitions. [2021-10-28 23:26:44,058 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8406862745098039 [2021-10-28 23:26:44,058 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2058 transitions. [2021-10-28 23:26:44,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2058 transitions. [2021-10-28 23:26:44,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:26:44,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2058 transitions. [2021-10-28 23:26:44,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 128.625) internal successors, (2058), 16 states have internal predecessors, (2058), 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) [2021-10-28 23:26:44,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 153.0) internal successors, (2601), 17 states have internal predecessors, (2601), 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) [2021-10-28 23:26:44,084 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 153.0) internal successors, (2601), 17 states have internal predecessors, (2601), 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) [2021-10-28 23:26:44,084 INFO L186 Difference]: Start difference. First operand has 168 places, 161 transitions, 404 flow. Second operand 16 states and 2058 transitions. [2021-10-28 23:26:44,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 297 transitions, 1213 flow [2021-10-28 23:26:44,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 297 transitions, 1211 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-28 23:26:44,159 INFO L242 Difference]: Finished difference. Result has 187 places, 228 transitions, 908 flow [2021-10-28 23:26:44,160 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=908, PETRI_PLACES=187, PETRI_TRANSITIONS=228} [2021-10-28 23:26:44,161 INFO L334 CegarLoopForPetriNet]: 155 programPoint places, 32 predicate places. [2021-10-28 23:26:44,161 INFO L470 AbstractCegarLoop]: Abstraction has has 187 places, 228 transitions, 908 flow [2021-10-28 23:26:44,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 122.375) internal successors, (979), 8 states have internal predecessors, (979), 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) [2021-10-28 23:26:44,162 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:26:44,163 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:44,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:26:44,163 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-28 23:26:44,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:44,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1679859124, now seen corresponding path program 1 times [2021-10-28 23:26:44,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:44,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669507864] [2021-10-28 23:26:44,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:44,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:44,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:44,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:44,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669507864] [2021-10-28 23:26:44,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669507864] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:26:44,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:26:44,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:26:44,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613729177] [2021-10-28 23:26:44,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:26:44,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:44,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:26:44,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:26:44,483 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 153 [2021-10-28 23:26:44,485 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 228 transitions, 908 flow. Second operand has 8 states, 8 states have (on average 127.375) internal successors, (1019), 8 states have internal predecessors, (1019), 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) [2021-10-28 23:26:44,485 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:26:44,486 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 153 [2021-10-28 23:26:44,486 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:26:48,987 INFO L129 PetriNetUnfolder]: 5930/20851 cut-off events. [2021-10-28 23:26:48,988 INFO L130 PetriNetUnfolder]: For 13845/14073 co-relation queries the response was YES. [2021-10-28 23:26:49,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42608 conditions, 20851 events. 5930/20851 cut-off events. For 13845/14073 co-relation queries the response was YES. Maximal size of possible extension queue 1183. Compared 276164 event pairs, 2015 based on Foata normal form. 3/19450 useless extension candidates. Maximal degree in co-relation 42551. Up to 4948 conditions per place. [2021-10-28 23:26:49,322 INFO L132 encePairwiseOnDemand]: 143/153 looper letters, 163 selfloop transitions, 227 changer transitions 54/588 dead transitions. [2021-10-28 23:26:49,322 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 588 transitions, 4102 flow [2021-10-28 23:26:49,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 23:26:49,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-28 23:26:49,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2121 transitions. [2021-10-28 23:26:49,332 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.866421568627451 [2021-10-28 23:26:49,332 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2121 transitions. [2021-10-28 23:26:49,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2121 transitions. [2021-10-28 23:26:49,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:26:49,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2121 transitions. [2021-10-28 23:26:49,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 132.5625) internal successors, (2121), 16 states have internal predecessors, (2121), 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) [2021-10-28 23:26:49,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 153.0) internal successors, (2601), 17 states have internal predecessors, (2601), 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) [2021-10-28 23:26:49,354 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 153.0) internal successors, (2601), 17 states have internal predecessors, (2601), 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) [2021-10-28 23:26:49,354 INFO L186 Difference]: Start difference. First operand has 187 places, 228 transitions, 908 flow. Second operand 16 states and 2121 transitions. [2021-10-28 23:26:49,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 588 transitions, 4102 flow [2021-10-28 23:26:49,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 588 transitions, 4100 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-28 23:26:49,775 INFO L242 Difference]: Finished difference. Result has 209 places, 455 transitions, 3465 flow [2021-10-28 23:26:49,776 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3465, PETRI_PLACES=209, PETRI_TRANSITIONS=455} [2021-10-28 23:26:49,776 INFO L334 CegarLoopForPetriNet]: 155 programPoint places, 54 predicate places. [2021-10-28 23:26:49,776 INFO L470 AbstractCegarLoop]: Abstraction has has 209 places, 455 transitions, 3465 flow [2021-10-28 23:26:49,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 127.375) internal successors, (1019), 8 states have internal predecessors, (1019), 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) [2021-10-28 23:26:49,777 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:26:49,778 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] [2021-10-28 23:26:49,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:26:49,778 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-28 23:26:49,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:49,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1450518078, now seen corresponding path program 1 times [2021-10-28 23:26:49,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:49,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875116175] [2021-10-28 23:26:49,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:49,781 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:49,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:49,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:49,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875116175] [2021-10-28 23:26:49,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875116175] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:26:49,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:26:49,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:26:49,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429493638] [2021-10-28 23:26:49,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:26:49,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:49,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:26:49,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:26:49,971 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 153 [2021-10-28 23:26:49,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 455 transitions, 3465 flow. Second operand has 6 states, 6 states have (on average 111.66666666666667) internal successors, (670), 6 states have internal predecessors, (670), 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) [2021-10-28 23:26:49,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:26:49,973 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 153 [2021-10-28 23:26:49,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:26:52,872 INFO L129 PetriNetUnfolder]: 2887/11371 cut-off events. [2021-10-28 23:26:52,873 INFO L130 PetriNetUnfolder]: For 1897/1897 co-relation queries the response was YES. [2021-10-28 23:26:52,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20244 conditions, 11371 events. 2887/11371 cut-off events. For 1897/1897 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 137905 event pairs, 461 based on Foata normal form. 826/12104 useless extension candidates. Maximal degree in co-relation 20161. Up to 1665 conditions per place. [2021-10-28 23:26:52,997 INFO L132 encePairwiseOnDemand]: 140/153 looper letters, 38 selfloop transitions, 22 changer transitions 0/253 dead transitions. [2021-10-28 23:26:52,998 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 253 transitions, 1366 flow [2021-10-28 23:26:52,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:26:52,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 23:26:53,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 825 transitions. [2021-10-28 23:26:53,002 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7703081232492998 [2021-10-28 23:26:53,002 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 825 transitions. [2021-10-28 23:26:53,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 825 transitions. [2021-10-28 23:26:53,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:26:53,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 825 transitions. [2021-10-28 23:26:53,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 117.85714285714286) internal successors, (825), 7 states have internal predecessors, (825), 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) [2021-10-28 23:26:53,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 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) [2021-10-28 23:26:53,011 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 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) [2021-10-28 23:26:53,011 INFO L186 Difference]: Start difference. First operand has 209 places, 455 transitions, 3465 flow. Second operand 7 states and 825 transitions. [2021-10-28 23:26:53,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 253 transitions, 1366 flow [2021-10-28 23:26:53,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 253 transitions, 1348 flow, removed 8 selfloop flow, removed 2 redundant places. [2021-10-28 23:26:53,122 INFO L242 Difference]: Finished difference. Result has 208 places, 239 transitions, 1244 flow [2021-10-28 23:26:53,122 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1244, PETRI_PLACES=208, PETRI_TRANSITIONS=239} [2021-10-28 23:26:53,123 INFO L334 CegarLoopForPetriNet]: 155 programPoint places, 53 predicate places. [2021-10-28 23:26:53,123 INFO L470 AbstractCegarLoop]: Abstraction has has 208 places, 239 transitions, 1244 flow [2021-10-28 23:26:53,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.66666666666667) internal successors, (670), 6 states have internal predecessors, (670), 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) [2021-10-28 23:26:53,124 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:26:53,124 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] [2021-10-28 23:26:53,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:26:53,125 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-28 23:26:53,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:53,125 INFO L85 PathProgramCache]: Analyzing trace with hash -881055181, now seen corresponding path program 1 times [2021-10-28 23:26:53,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:53,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747090466] [2021-10-28 23:26:53,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:53,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:53,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:53,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:53,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747090466] [2021-10-28 23:26:53,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747090466] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:26:53,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:26:53,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:26:53,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628539286] [2021-10-28 23:26:53,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:26:53,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:53,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:26:53,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:26:53,262 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 153 [2021-10-28 23:26:53,264 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 239 transitions, 1244 flow. Second operand has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2021-10-28 23:26:53,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:26:53,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 153 [2021-10-28 23:26:53,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:26:55,489 INFO L129 PetriNetUnfolder]: 1985/11674 cut-off events. [2021-10-28 23:26:55,489 INFO L130 PetriNetUnfolder]: For 4044/4096 co-relation queries the response was YES. [2021-10-28 23:26:55,568 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21269 conditions, 11674 events. 1985/11674 cut-off events. For 4044/4096 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 151698 event pairs, 516 based on Foata normal form. 90/11441 useless extension candidates. Maximal degree in co-relation 21200. Up to 940 conditions per place. [2021-10-28 23:26:55,619 INFO L132 encePairwiseOnDemand]: 144/153 looper letters, 88 selfloop transitions, 87 changer transitions 0/320 dead transitions. [2021-10-28 23:26:55,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 320 transitions, 1999 flow [2021-10-28 23:26:55,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:26:55,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-28 23:26:55,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1812 transitions. [2021-10-28 23:26:55,627 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.84593837535014 [2021-10-28 23:26:55,627 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1812 transitions. [2021-10-28 23:26:55,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1812 transitions. [2021-10-28 23:26:55,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:26:55,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1812 transitions. [2021-10-28 23:26:55,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 129.42857142857142) internal successors, (1812), 14 states have internal predecessors, (1812), 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) [2021-10-28 23:26:55,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 153.0) internal successors, (2295), 15 states have internal predecessors, (2295), 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) [2021-10-28 23:26:55,643 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 153.0) internal successors, (2295), 15 states have internal predecessors, (2295), 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) [2021-10-28 23:26:55,643 INFO L186 Difference]: Start difference. First operand has 208 places, 239 transitions, 1244 flow. Second operand 14 states and 1812 transitions. [2021-10-28 23:26:55,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 320 transitions, 1999 flow [2021-10-28 23:26:55,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 320 transitions, 1996 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-28 23:26:55,732 INFO L242 Difference]: Finished difference. Result has 224 places, 264 transitions, 1730 flow [2021-10-28 23:26:55,733 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=1241, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1730, PETRI_PLACES=224, PETRI_TRANSITIONS=264} [2021-10-28 23:26:55,733 INFO L334 CegarLoopForPetriNet]: 155 programPoint places, 69 predicate places. [2021-10-28 23:26:55,733 INFO L470 AbstractCegarLoop]: Abstraction has has 224 places, 264 transitions, 1730 flow [2021-10-28 23:26:55,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2021-10-28 23:26:55,734 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:26:55,734 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:55,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:26:55,735 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-28 23:26:55,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:55,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1381745063, now seen corresponding path program 1 times [2021-10-28 23:26:55,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:55,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037453547] [2021-10-28 23:26:55,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:55,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:55,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:55,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:55,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037453547] [2021-10-28 23:26:55,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037453547] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:26:55,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:26:55,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:26:55,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679565723] [2021-10-28 23:26:55,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:26:55,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:55,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:26:55,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:26:55,881 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 153 [2021-10-28 23:26:55,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 264 transitions, 1730 flow. Second operand has 6 states, 6 states have (on average 111.83333333333333) internal successors, (671), 6 states have internal predecessors, (671), 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) [2021-10-28 23:26:55,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:26:55,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 153 [2021-10-28 23:26:55,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:26:57,023 INFO L129 PetriNetUnfolder]: 879/5631 cut-off events. [2021-10-28 23:26:57,023 INFO L130 PetriNetUnfolder]: For 2912/2939 co-relation queries the response was YES. [2021-10-28 23:26:57,060 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11692 conditions, 5631 events. 879/5631 cut-off events. For 2912/2939 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 66256 event pairs, 29 based on Foata normal form. 327/5921 useless extension candidates. Maximal degree in co-relation 11604. Up to 729 conditions per place. [2021-10-28 23:26:57,079 INFO L132 encePairwiseOnDemand]: 144/153 looper letters, 44 selfloop transitions, 16 changer transitions 0/278 dead transitions. [2021-10-28 23:26:57,080 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 278 transitions, 1894 flow [2021-10-28 23:26:57,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:26:57,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 23:26:57,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 819 transitions. [2021-10-28 23:26:57,084 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7647058823529411 [2021-10-28 23:26:57,084 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 819 transitions. [2021-10-28 23:26:57,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 819 transitions. [2021-10-28 23:26:57,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:26:57,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 819 transitions. [2021-10-28 23:26:57,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:57,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 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) [2021-10-28 23:26:57,092 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 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) [2021-10-28 23:26:57,092 INFO L186 Difference]: Start difference. First operand has 224 places, 264 transitions, 1730 flow. Second operand 7 states and 819 transitions. [2021-10-28 23:26:57,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 278 transitions, 1894 flow [2021-10-28 23:26:57,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 278 transitions, 1882 flow, removed 6 selfloop flow, removed 0 redundant places. [2021-10-28 23:26:57,253 INFO L242 Difference]: Finished difference. Result has 230 places, 270 transitions, 1766 flow [2021-10-28 23:26:57,254 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=1718, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1766, PETRI_PLACES=230, PETRI_TRANSITIONS=270} [2021-10-28 23:26:57,254 INFO L334 CegarLoopForPetriNet]: 155 programPoint places, 75 predicate places. [2021-10-28 23:26:57,254 INFO L470 AbstractCegarLoop]: Abstraction has has 230 places, 270 transitions, 1766 flow [2021-10-28 23:26:57,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.83333333333333) internal successors, (671), 6 states have internal predecessors, (671), 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) [2021-10-28 23:26:57,255 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:26:57,255 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:57,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:26:57,256 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-28 23:26:57,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:57,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1891840749, now seen corresponding path program 1 times [2021-10-28 23:26:57,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:57,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367418227] [2021-10-28 23:26:57,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:57,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:57,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:57,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:57,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367418227] [2021-10-28 23:26:57,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367418227] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:26:57,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:26:57,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:26:57,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955825309] [2021-10-28 23:26:57,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:26:57,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:57,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:26:57,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:26:57,359 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 153 [2021-10-28 23:26:57,360 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 270 transitions, 1766 flow. Second operand has 8 states, 8 states have (on average 124.125) internal successors, (993), 8 states have internal predecessors, (993), 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) [2021-10-28 23:26:57,360 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:26:57,360 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 153 [2021-10-28 23:26:57,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:26:59,188 INFO L129 PetriNetUnfolder]: 1650/9988 cut-off events. [2021-10-28 23:26:59,189 INFO L130 PetriNetUnfolder]: For 6527/6660 co-relation queries the response was YES. [2021-10-28 23:26:59,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19879 conditions, 9988 events. 1650/9988 cut-off events. For 6527/6660 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 123868 event pairs, 465 based on Foata normal form. 112/9837 useless extension candidates. Maximal degree in co-relation 19803. Up to 734 conditions per place. [2021-10-28 23:26:59,305 INFO L132 encePairwiseOnDemand]: 144/153 looper letters, 76 selfloop transitions, 77 changer transitions 12/315 dead transitions. [2021-10-28 23:26:59,306 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 315 transitions, 2256 flow [2021-10-28 23:26:59,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:26:59,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-28 23:26:59,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1800 transitions. [2021-10-28 23:26:59,315 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8403361344537815 [2021-10-28 23:26:59,315 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1800 transitions. [2021-10-28 23:26:59,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1800 transitions. [2021-10-28 23:26:59,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:26:59,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1800 transitions. [2021-10-28 23:26:59,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 128.57142857142858) internal successors, (1800), 14 states have internal predecessors, (1800), 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) [2021-10-28 23:26:59,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 153.0) internal successors, (2295), 15 states have internal predecessors, (2295), 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) [2021-10-28 23:26:59,331 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 153.0) internal successors, (2295), 15 states have internal predecessors, (2295), 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) [2021-10-28 23:26:59,331 INFO L186 Difference]: Start difference. First operand has 230 places, 270 transitions, 1766 flow. Second operand 14 states and 1800 transitions. [2021-10-28 23:26:59,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 315 transitions, 2256 flow [2021-10-28 23:26:59,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 315 transitions, 2198 flow, removed 0 selfloop flow, removed 7 redundant places. [2021-10-28 23:26:59,402 INFO L242 Difference]: Finished difference. Result has 234 places, 257 transitions, 1677 flow [2021-10-28 23:26:59,403 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=1694, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1677, PETRI_PLACES=234, PETRI_TRANSITIONS=257} [2021-10-28 23:26:59,404 INFO L334 CegarLoopForPetriNet]: 155 programPoint places, 79 predicate places. [2021-10-28 23:26:59,404 INFO L470 AbstractCegarLoop]: Abstraction has has 234 places, 257 transitions, 1677 flow [2021-10-28 23:26:59,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 124.125) internal successors, (993), 8 states have internal predecessors, (993), 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) [2021-10-28 23:26:59,405 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:26:59,405 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:59,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:26:59,405 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-28 23:26:59,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:59,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1354538637, now seen corresponding path program 1 times [2021-10-28 23:26:59,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:59,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699984849] [2021-10-28 23:26:59,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:59,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:59,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:59,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:59,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699984849] [2021-10-28 23:26:59,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699984849] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:26:59,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:26:59,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:26:59,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431991326] [2021-10-28 23:26:59,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:26:59,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:59,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:26:59,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:26:59,538 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 153 [2021-10-28 23:26:59,540 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 257 transitions, 1677 flow. Second operand has 8 states, 8 states have (on average 119.125) internal successors, (953), 8 states have internal predecessors, (953), 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) [2021-10-28 23:26:59,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:26:59,540 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 153 [2021-10-28 23:26:59,540 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:27:00,895 INFO L129 PetriNetUnfolder]: 1174/6848 cut-off events. [2021-10-28 23:27:00,895 INFO L130 PetriNetUnfolder]: For 4119/4165 co-relation queries the response was YES. [2021-10-28 23:27:00,931 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13950 conditions, 6848 events. 1174/6848 cut-off events. For 4119/4165 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 78592 event pairs, 308 based on Foata normal form. 127/6767 useless extension candidates. Maximal degree in co-relation 13877. Up to 472 conditions per place. [2021-10-28 23:27:00,942 INFO L132 encePairwiseOnDemand]: 141/153 looper letters, 73 selfloop transitions, 44 changer transitions 42/299 dead transitions. [2021-10-28 23:27:00,942 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 299 transitions, 2318 flow [2021-10-28 23:27:00,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:27:00,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 23:27:00,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1365 transitions. [2021-10-28 23:27:00,946 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8110516934046346 [2021-10-28 23:27:00,946 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1365 transitions. [2021-10-28 23:27:00,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1365 transitions. [2021-10-28 23:27:00,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:27:00,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1365 transitions. [2021-10-28 23:27:00,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 124.0909090909091) internal successors, (1365), 11 states have internal predecessors, (1365), 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) [2021-10-28 23:27:00,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 153.0) internal successors, (1836), 12 states have internal predecessors, (1836), 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) [2021-10-28 23:27:00,958 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 153.0) internal successors, (1836), 12 states have internal predecessors, (1836), 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) [2021-10-28 23:27:00,958 INFO L186 Difference]: Start difference. First operand has 234 places, 257 transitions, 1677 flow. Second operand 11 states and 1365 transitions. [2021-10-28 23:27:00,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 299 transitions, 2318 flow [2021-10-28 23:27:00,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 299 transitions, 1955 flow, removed 64 selfloop flow, removed 14 redundant places. [2021-10-28 23:27:00,996 INFO L242 Difference]: Finished difference. Result has 228 places, 229 transitions, 1193 flow [2021-10-28 23:27:00,997 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=1391, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1193, PETRI_PLACES=228, PETRI_TRANSITIONS=229} [2021-10-28 23:27:00,997 INFO L334 CegarLoopForPetriNet]: 155 programPoint places, 73 predicate places. [2021-10-28 23:27:00,997 INFO L470 AbstractCegarLoop]: Abstraction has has 228 places, 229 transitions, 1193 flow [2021-10-28 23:27:00,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 119.125) internal successors, (953), 8 states have internal predecessors, (953), 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) [2021-10-28 23:27:00,998 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:27:00,998 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:27:00,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:27:00,999 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-28 23:27:00,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:27:00,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1458248786, now seen corresponding path program 1 times [2021-10-28 23:27:01,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:27:01,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93821939] [2021-10-28 23:27:01,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:27:01,000 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:27:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:01,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:27:01,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:27:01,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93821939] [2021-10-28 23:27:01,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93821939] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:27:01,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:27:01,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:27:01,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222128416] [2021-10-28 23:27:01,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:27:01,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:27:01,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:27:01,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:27:01,112 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 153 [2021-10-28 23:27:01,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 229 transitions, 1193 flow. Second operand has 8 states, 8 states have (on average 124.125) internal successors, (993), 8 states have internal predecessors, (993), 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) [2021-10-28 23:27:01,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:27:01,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 153 [2021-10-28 23:27:01,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:27:02,104 INFO L129 PetriNetUnfolder]: 1091/6749 cut-off events. [2021-10-28 23:27:02,105 INFO L130 PetriNetUnfolder]: For 5556/5623 co-relation queries the response was YES. [2021-10-28 23:27:02,161 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13690 conditions, 6749 events. 1091/6749 cut-off events. For 5556/5623 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 77753 event pairs, 243 based on Foata normal form. 96/6754 useless extension candidates. Maximal degree in co-relation 13673. Up to 384 conditions per place. [2021-10-28 23:27:02,181 INFO L132 encePairwiseOnDemand]: 146/153 looper letters, 0 selfloop transitions, 0 changer transitions 245/245 dead transitions. [2021-10-28 23:27:02,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 245 transitions, 1454 flow [2021-10-28 23:27:02,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:27:02,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 23:27:02,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1025 transitions. [2021-10-28 23:27:02,186 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8374183006535948 [2021-10-28 23:27:02,186 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1025 transitions. [2021-10-28 23:27:02,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1025 transitions. [2021-10-28 23:27:02,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:27:02,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1025 transitions. [2021-10-28 23:27:02,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.125) internal successors, (1025), 8 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:27:02,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 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) [2021-10-28 23:27:02,193 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 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) [2021-10-28 23:27:02,193 INFO L186 Difference]: Start difference. First operand has 228 places, 229 transitions, 1193 flow. Second operand 8 states and 1025 transitions. [2021-10-28 23:27:02,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 245 transitions, 1454 flow [2021-10-28 23:27:02,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 245 transitions, 1348 flow, removed 19 selfloop flow, removed 4 redundant places. [2021-10-28 23:27:02,228 INFO L242 Difference]: Finished difference. Result has 219 places, 0 transitions, 0 flow [2021-10-28 23:27:02,228 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=219, PETRI_TRANSITIONS=0} [2021-10-28 23:27:02,229 INFO L334 CegarLoopForPetriNet]: 155 programPoint places, 64 predicate places. [2021-10-28 23:27:02,229 INFO L470 AbstractCegarLoop]: Abstraction has has 219 places, 0 transitions, 0 flow [2021-10-28 23:27:02,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 124.125) internal successors, (993), 8 states have internal predecessors, (993), 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) [2021-10-28 23:27:02,232 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:27:02,232 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:27:02,232 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:27:02,233 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:27:02,233 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 23:27:02,233 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 23:27:02,233 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-28 23:27:02,233 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:27:02,233 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:27:02,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 23:27:02,236 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:27:02,239 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 23:27:02,239 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:27:02,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:27:02 BasicIcfg [2021-10-28 23:27:02,241 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:27:02,242 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:27:02,242 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:27:02,242 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:27:02,242 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:26:38" (3/4) ... [2021-10-28 23:27:02,245 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:27:02,251 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2021-10-28 23:27:02,251 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t3_fun [2021-10-28 23:27:02,252 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2021-10-28 23:27:02,256 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-28 23:27:02,257 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:27:02,257 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:27:02,257 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:27:02,293 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69132792-a97b-45ba-a611-33075abdbaee/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:27:02,294 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:27:02,295 INFO L168 Benchmark]: Toolchain (without parser) took 25735.40 ms. Allocated memory was 98.6 MB in the beginning and 7.4 GB in the end (delta: 7.3 GB). Free memory was 62.2 MB in the beginning and 6.5 GB in the end (delta: -6.4 GB). Peak memory consumption was 872.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:27:02,295 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 98.6 MB. Free memory is still 79.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:27:02,296 INFO L168 Benchmark]: CACSL2BoogieTranslator took 764.78 ms. Allocated memory is still 98.6 MB. Free memory was 62.0 MB in the beginning and 64.9 MB in the end (delta: -2.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:27:02,296 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.47 ms. Allocated memory is still 98.6 MB. Free memory was 64.9 MB in the beginning and 62.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:27:02,297 INFO L168 Benchmark]: Boogie Preprocessor took 76.54 ms. Allocated memory is still 98.6 MB. Free memory was 62.5 MB in the beginning and 61.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:27:02,297 INFO L168 Benchmark]: RCFGBuilder took 746.40 ms. Allocated memory is still 98.6 MB. Free memory was 61.1 MB in the beginning and 46.1 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:27:02,298 INFO L168 Benchmark]: TraceAbstraction took 24016.61 ms. Allocated memory was 98.6 MB in the beginning and 7.4 GB in the end (delta: 7.3 GB). Free memory was 45.5 MB in the beginning and 6.5 GB in the end (delta: -6.4 GB). Peak memory consumption was 856.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:27:02,298 INFO L168 Benchmark]: Witness Printer took 52.19 ms. Allocated memory is still 7.4 GB. Free memory was 6.5 GB in the beginning and 6.5 GB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:27:02,300 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 98.6 MB. Free memory is still 79.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 764.78 ms. Allocated memory is still 98.6 MB. Free memory was 62.0 MB in the beginning and 64.9 MB in the end (delta: -2.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.47 ms. Allocated memory is still 98.6 MB. Free memory was 64.9 MB in the beginning and 62.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.54 ms. Allocated memory is still 98.6 MB. Free memory was 62.5 MB in the beginning and 61.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 746.40 ms. Allocated memory is still 98.6 MB. Free memory was 61.1 MB in the beginning and 46.1 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 24016.61 ms. Allocated memory was 98.6 MB in the beginning and 7.4 GB in the end (delta: 7.3 GB). Free memory was 45.5 MB in the beginning and 6.5 GB in the end (delta: -6.4 GB). Peak memory consumption was 856.3 MB. Max. memory is 16.1 GB. * Witness Printer took 52.19 ms. Allocated memory is still 7.4 GB. Free memory was 6.5 GB in the beginning and 6.5 GB 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 219 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 23.7s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 21.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 238 SDtfs, 718 SDslu, 863 SDs, 0 SdLazy, 1397 SolverSat, 190 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3465occurred in iteration=3, InterpolantAutomatonStates: 109, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 639 NumberOfCodeBlocks, 639 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 630 ConstructedInterpolants, 0 QuantifiedInterpolants, 2617 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 23:27:02,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69132792-a97b-45ba-a611-33075abdbaee/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...