./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.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_25a4b1b1-9a26-4a85-ac4e-83f1b33ffa39/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a4b1b1-9a26-4a85-ac4e-83f1b33ffa39/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a4b1b1-9a26-4a85-ac4e-83f1b33ffa39/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a4b1b1-9a26-4a85-ac4e-83f1b33ffa39/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a4b1b1-9a26-4a85-ac4e-83f1b33ffa39/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a4b1b1-9a26-4a85-ac4e-83f1b33ffa39/bin/uautomizer-UnR33cPsHg --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 9071d56f4666aca734ab742196d3aa15fce92ad6b7c276706d2cff43d2d6147a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 09:26:27,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:26:27,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:26:27,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:26:27,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:26:27,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:26:27,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:26:27,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:26:27,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:26:27,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:26:27,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:26:27,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:26:27,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:26:27,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:26:27,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:26:27,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:26:27,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:26:27,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:26:27,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:26:27,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:26:27,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:26:27,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:26:27,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:26:27,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:26:27,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:26:27,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:26:27,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:26:27,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:26:27,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:26:27,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:26:27,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:26:27,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:26:27,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:26:27,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:26:27,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:26:27,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:26:27,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:26:27,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:26:27,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:26:27,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:26:27,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:26:27,592 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a4b1b1-9a26-4a85-ac4e-83f1b33ffa39/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:26:27,649 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:26:27,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:26:27,650 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:26:27,651 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:26:27,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:26:27,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:26:27,653 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:26:27,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:26:27,654 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:26:27,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:26:27,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:26:27,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:26:27,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:26:27,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:26:27,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:26:27,657 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:26:27,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:26:27,657 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:26:27,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:26:27,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:26:27,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:26:27,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:26:27,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:26:27,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:26:27,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:26:27,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:26:27,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:26:27,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:26:27,661 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:26:27,661 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:26:27,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:26:27,661 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:26:27,662 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_25a4b1b1-9a26-4a85-ac4e-83f1b33ffa39/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a4b1b1-9a26-4a85-ac4e-83f1b33ffa39/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9071d56f4666aca734ab742196d3aa15fce92ad6b7c276706d2cff43d2d6147a [2021-10-28 09:26:28,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:26:28,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:26:28,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:26:28,105 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:26:28,106 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:26:28,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a4b1b1-9a26-4a85-ac4e-83f1b33ffa39/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-28 09:26:28,190 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a4b1b1-9a26-4a85-ac4e-83f1b33ffa39/bin/uautomizer-UnR33cPsHg/data/09ac0b245/e564673922e143989967340306790255/FLAG0fa890aa5 [2021-10-28 09:26:28,944 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:26:28,945 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a4b1b1-9a26-4a85-ac4e-83f1b33ffa39/sv-benchmarks/c/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-28 09:26:28,960 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a4b1b1-9a26-4a85-ac4e-83f1b33ffa39/bin/uautomizer-UnR33cPsHg/data/09ac0b245/e564673922e143989967340306790255/FLAG0fa890aa5 [2021-10-28 09:26:29,192 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a4b1b1-9a26-4a85-ac4e-83f1b33ffa39/bin/uautomizer-UnR33cPsHg/data/09ac0b245/e564673922e143989967340306790255 [2021-10-28 09:26:29,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:26:29,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:26:29,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:26:29,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:26:29,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:26:29,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:26:29" (1/1) ... [2021-10-28 09:26:29,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e6c5900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:29, skipping insertion in model container [2021-10-28 09:26:29,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:26:29" (1/1) ... [2021-10-28 09:26:29,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:26:29,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:26:29,478 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_25a4b1b1-9a26-4a85-ac4e-83f1b33ffa39/sv-benchmarks/c/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-10-28 09:26:29,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:26:29,693 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:26:29,720 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_25a4b1b1-9a26-4a85-ac4e-83f1b33ffa39/sv-benchmarks/c/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-10-28 09:26:29,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:26:29,853 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:26:29,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:29 WrapperNode [2021-10-28 09:26:29,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:26:29,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:26:29,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:26:29,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:26:29,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:29" (1/1) ... [2021-10-28 09:26:29,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:29" (1/1) ... [2021-10-28 09:26:29,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:26:29,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:26:29,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:26:29,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:26:29,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:29" (1/1) ... [2021-10-28 09:26:29,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:29" (1/1) ... [2021-10-28 09:26:29,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:29" (1/1) ... [2021-10-28 09:26:29,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:29" (1/1) ... [2021-10-28 09:26:29,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:29" (1/1) ... [2021-10-28 09:26:29,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:29" (1/1) ... [2021-10-28 09:26:29,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:29" (1/1) ... [2021-10-28 09:26:30,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:26:30,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:26:30,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:26:30,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:26:30,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:29" (1/1) ... [2021-10-28 09:26:30,025 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:26:30,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a4b1b1-9a26-4a85-ac4e-83f1b33ffa39/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:26:30,054 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a4b1b1-9a26-4a85-ac4e-83f1b33ffa39/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:26:30,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a4b1b1-9a26-4a85-ac4e-83f1b33ffa39/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:26:30,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:26:30,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 09:26:30,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:26:30,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:26:30,120 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-28 09:26:30,120 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-28 09:26:30,120 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-28 09:26:30,120 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-28 09:26:30,121 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-28 09:26:30,121 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-28 09:26:30,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:26:30,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 09:26:30,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:26:30,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:26:30,124 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 09:26:30,567 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:26:30,568 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-28 09:26:30,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:26:30 BoogieIcfgContainer [2021-10-28 09:26:30,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:26:30,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:26:30,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:26:30,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:26:30,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:26:29" (1/3) ... [2021-10-28 09:26:30,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cc7881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:26:30, skipping insertion in model container [2021-10-28 09:26:30,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:29" (2/3) ... [2021-10-28 09:26:30,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cc7881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:26:30, skipping insertion in model container [2021-10-28 09:26:30,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:26:30" (3/3) ... [2021-10-28 09:26:30,589 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-28 09:26:30,598 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 09:26:30,598 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:26:30,598 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:26:30,599 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 09:26:30,648 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,648 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,649 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,649 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,649 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,649 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,650 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,650 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,650 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,651 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,651 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,651 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,652 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,652 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,652 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,652 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,653 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,653 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,653 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,653 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,654 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,654 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,655 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,655 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,655 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,655 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,656 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,656 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,656 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,657 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,657 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,657 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,657 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,658 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,658 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,658 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,662 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,662 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,663 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,663 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,668 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,669 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,669 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,669 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,672 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,673 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,673 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,673 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:30,675 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-28 09:26:30,732 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:26:30,739 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 09:26:30,739 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-28 09:26:30,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-10-28 09:26:30,818 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-10-28 09:26:30,819 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:26:30,824 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-10-28 09:26:30,824 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2021-10-28 09:26:30,830 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2021-10-28 09:26:30,883 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2021-10-28 09:26:30,884 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:26:30,884 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:26:30,885 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] [2021-10-28 09:26:30,885 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:26:30,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:30,892 INFO L85 PathProgramCache]: Analyzing trace with hash -206144659, now seen corresponding path program 1 times [2021-10-28 09:26:30,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:26:30,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351819157] [2021-10-28 09:26:30,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:26:30,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:26:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:26:31,373 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 09:26:31,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:26:31,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351819157] [2021-10-28 09:26:31,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351819157] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:26:31,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:26:31,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:26:31,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049521613] [2021-10-28 09:26:31,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:26:31,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:26:31,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:26:31,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:26:31,413 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 84 [2021-10-28 09:26:31,422 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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 09:26:31,423 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:26:31,423 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 84 [2021-10-28 09:26:31,424 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:26:31,672 INFO L129 PetriNetUnfolder]: 3/83 cut-off events. [2021-10-28 09:26:31,684 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:26:31,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 83 events. 3/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 86 event pairs, 0 based on Foata normal form. 4/86 useless extension candidates. Maximal degree in co-relation 82. Up to 7 conditions per place. [2021-10-28 09:26:31,687 INFO L132 encePairwiseOnDemand]: 77/84 looper letters, 6 selfloop transitions, 2 changer transitions 11/78 dead transitions. [2021-10-28 09:26:31,688 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 78 transitions, 201 flow [2021-10-28 09:26:31,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:26:31,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 09:26:31,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 670 transitions. [2021-10-28 09:26:31,714 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8862433862433863 [2021-10-28 09:26:31,715 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 670 transitions. [2021-10-28 09:26:31,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 670 transitions. [2021-10-28 09:26:31,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:26:31,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 670 transitions. [2021-10-28 09:26:31,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.44444444444444) internal successors, (670), 9 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 09:26:31,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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 09:26:31,747 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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 09:26:31,749 INFO L186 Difference]: Start difference. First operand has 78 places, 69 transitions, 147 flow. Second operand 9 states and 670 transitions. [2021-10-28 09:26:31,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 78 transitions, 201 flow [2021-10-28 09:26:31,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 78 transitions, 198 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-28 09:26:31,763 INFO L242 Difference]: Finished difference. Result has 90 places, 67 transitions, 160 flow [2021-10-28 09:26:31,766 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=160, PETRI_PLACES=90, PETRI_TRANSITIONS=67} [2021-10-28 09:26:31,767 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 12 predicate places. [2021-10-28 09:26:31,768 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 67 transitions, 160 flow [2021-10-28 09:26:31,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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 09:26:31,769 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:26:31,770 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] [2021-10-28 09:26:31,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:26:31,771 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:26:31,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:31,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1072234386, now seen corresponding path program 1 times [2021-10-28 09:26:31,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:26:31,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638207505] [2021-10-28 09:26:31,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:26:31,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:26:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:26:32,045 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 09:26:32,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:26:32,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638207505] [2021-10-28 09:26:32,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638207505] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:26:32,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:26:32,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:26:32,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88949633] [2021-10-28 09:26:32,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:26:32,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:26:32,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:26:32,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:26:32,057 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-10-28 09:26:32,080 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 67 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 66.57142857142857) internal successors, (466), 7 states have internal predecessors, (466), 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 09:26:32,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:26:32,081 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-10-28 09:26:32,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:26:32,543 INFO L129 PetriNetUnfolder]: 185/517 cut-off events. [2021-10-28 09:26:32,544 INFO L130 PetriNetUnfolder]: For 150/195 co-relation queries the response was YES. [2021-10-28 09:26:32,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1040 conditions, 517 events. 185/517 cut-off events. For 150/195 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2702 event pairs, 12 based on Foata normal form. 16/519 useless extension candidates. Maximal degree in co-relation 1000. Up to 126 conditions per place. [2021-10-28 09:26:32,558 INFO L132 encePairwiseOnDemand]: 72/84 looper letters, 18 selfloop transitions, 8 changer transitions 38/116 dead transitions. [2021-10-28 09:26:32,558 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 116 transitions, 432 flow [2021-10-28 09:26:32,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:26:32,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 09:26:32,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 912 transitions. [2021-10-28 09:26:32,570 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8351648351648352 [2021-10-28 09:26:32,570 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 912 transitions. [2021-10-28 09:26:32,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 912 transitions. [2021-10-28 09:26:32,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:26:32,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 912 transitions. [2021-10-28 09:26:32,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 70.15384615384616) internal successors, (912), 13 states have internal predecessors, (912), 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 09:26:32,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 09:26:32,582 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 09:26:32,582 INFO L186 Difference]: Start difference. First operand has 90 places, 67 transitions, 160 flow. Second operand 13 states and 912 transitions. [2021-10-28 09:26:32,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 116 transitions, 432 flow [2021-10-28 09:26:32,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 116 transitions, 376 flow, removed 24 selfloop flow, removed 8 redundant places. [2021-10-28 09:26:32,598 INFO L242 Difference]: Finished difference. Result has 99 places, 71 transitions, 233 flow [2021-10-28 09:26:32,598 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=233, PETRI_PLACES=99, PETRI_TRANSITIONS=71} [2021-10-28 09:26:32,599 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 21 predicate places. [2021-10-28 09:26:32,599 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 71 transitions, 233 flow [2021-10-28 09:26:32,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.57142857142857) internal successors, (466), 7 states have internal predecessors, (466), 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 09:26:32,601 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:26:32,601 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] [2021-10-28 09:26:32,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:26:32,604 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:26:32,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:32,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1696847475, now seen corresponding path program 1 times [2021-10-28 09:26:32,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:26:32,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977102399] [2021-10-28 09:26:32,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:26:32,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:26:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:26:32,872 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 09:26:32,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:26:32,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977102399] [2021-10-28 09:26:32,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977102399] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:26:32,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:26:32,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:26:32,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583780264] [2021-10-28 09:26:32,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:26:32,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:26:32,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:26:32,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:26:32,882 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-10-28 09:26:32,883 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 71 transitions, 233 flow. Second operand has 7 states, 7 states have (on average 66.71428571428571) internal successors, (467), 7 states have internal predecessors, (467), 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 09:26:32,884 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:26:32,884 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-10-28 09:26:32,884 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:26:33,288 INFO L129 PetriNetUnfolder]: 99/356 cut-off events. [2021-10-28 09:26:33,288 INFO L130 PetriNetUnfolder]: For 765/1050 co-relation queries the response was YES. [2021-10-28 09:26:33,291 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1132 conditions, 356 events. 99/356 cut-off events. For 765/1050 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1683 event pairs, 10 based on Foata normal form. 15/364 useless extension candidates. Maximal degree in co-relation 1082. Up to 100 conditions per place. [2021-10-28 09:26:33,294 INFO L132 encePairwiseOnDemand]: 72/84 looper letters, 19 selfloop transitions, 13 changer transitions 34/118 dead transitions. [2021-10-28 09:26:33,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 118 transitions, 703 flow [2021-10-28 09:26:33,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:26:33,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 09:26:33,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 902 transitions. [2021-10-28 09:26:33,300 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.826007326007326 [2021-10-28 09:26:33,300 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 902 transitions. [2021-10-28 09:26:33,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 902 transitions. [2021-10-28 09:26:33,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:26:33,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 902 transitions. [2021-10-28 09:26:33,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.38461538461539) internal successors, (902), 13 states have internal predecessors, (902), 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 09:26:33,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 09:26:33,310 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 09:26:33,311 INFO L186 Difference]: Start difference. First operand has 99 places, 71 transitions, 233 flow. Second operand 13 states and 902 transitions. [2021-10-28 09:26:33,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 118 transitions, 703 flow [2021-10-28 09:26:33,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 118 transitions, 652 flow, removed 24 selfloop flow, removed 4 redundant places. [2021-10-28 09:26:33,322 INFO L242 Difference]: Finished difference. Result has 110 places, 78 transitions, 364 flow [2021-10-28 09:26:33,322 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=364, PETRI_PLACES=110, PETRI_TRANSITIONS=78} [2021-10-28 09:26:33,323 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 32 predicate places. [2021-10-28 09:26:33,323 INFO L470 AbstractCegarLoop]: Abstraction has has 110 places, 78 transitions, 364 flow [2021-10-28 09:26:33,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.71428571428571) internal successors, (467), 7 states have internal predecessors, (467), 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 09:26:33,324 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:26:33,324 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] [2021-10-28 09:26:33,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:26:33,325 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:26:33,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:33,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1816831443, now seen corresponding path program 1 times [2021-10-28 09:26:33,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:26:33,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304324736] [2021-10-28 09:26:33,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:26:33,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:26:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:26:33,473 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 09:26:33,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:26:33,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304324736] [2021-10-28 09:26:33,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304324736] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:26:33,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:26:33,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:26:33,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24311968] [2021-10-28 09:26:33,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:26:33,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:26:33,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:26:33,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:26:33,478 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-10-28 09:26:33,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 78 transitions, 364 flow. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 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 09:26:33,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:26:33,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-10-28 09:26:33,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:26:33,822 INFO L129 PetriNetUnfolder]: 362/953 cut-off events. [2021-10-28 09:26:33,822 INFO L130 PetriNetUnfolder]: For 782/837 co-relation queries the response was YES. [2021-10-28 09:26:33,833 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2160 conditions, 953 events. 362/953 cut-off events. For 782/837 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 7170 event pairs, 22 based on Foata normal form. 44/908 useless extension candidates. Maximal degree in co-relation 2099. Up to 311 conditions per place. [2021-10-28 09:26:33,841 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 19 selfloop transitions, 16 changer transitions 0/103 dead transitions. [2021-10-28 09:26:33,841 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 103 transitions, 484 flow [2021-10-28 09:26:33,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:26:33,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 09:26:33,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 667 transitions. [2021-10-28 09:26:33,845 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8822751322751323 [2021-10-28 09:26:33,845 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 667 transitions. [2021-10-28 09:26:33,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 667 transitions. [2021-10-28 09:26:33,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:26:33,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 667 transitions. [2021-10-28 09:26:33,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.11111111111111) internal successors, (667), 9 states have internal predecessors, (667), 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 09:26:33,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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 09:26:33,851 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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 09:26:33,852 INFO L186 Difference]: Start difference. First operand has 110 places, 78 transitions, 364 flow. Second operand 9 states and 667 transitions. [2021-10-28 09:26:33,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 103 transitions, 484 flow [2021-10-28 09:26:33,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 103 transitions, 450 flow, removed 15 selfloop flow, removed 7 redundant places. [2021-10-28 09:26:33,863 INFO L242 Difference]: Finished difference. Result has 107 places, 92 transitions, 441 flow [2021-10-28 09:26:33,864 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=441, PETRI_PLACES=107, PETRI_TRANSITIONS=92} [2021-10-28 09:26:33,864 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 29 predicate places. [2021-10-28 09:26:33,864 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 92 transitions, 441 flow [2021-10-28 09:26:33,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 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 09:26:33,865 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:26:33,865 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] [2021-10-28 09:26:33,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:26:33,866 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:26:33,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:33,866 INFO L85 PathProgramCache]: Analyzing trace with hash 340118128, now seen corresponding path program 1 times [2021-10-28 09:26:33,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:26:33,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395165533] [2021-10-28 09:26:33,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:26:33,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:26:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:26:33,989 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 09:26:33,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:26:33,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395165533] [2021-10-28 09:26:33,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395165533] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:26:33,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:26:33,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:26:33,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934229252] [2021-10-28 09:26:33,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:26:33,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:26:33,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:26:33,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:26:33,994 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-10-28 09:26:33,995 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 92 transitions, 441 flow. Second operand has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 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 09:26:33,995 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:26:33,995 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-10-28 09:26:33,995 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:26:34,426 INFO L129 PetriNetUnfolder]: 330/929 cut-off events. [2021-10-28 09:26:34,426 INFO L130 PetriNetUnfolder]: For 2169/2725 co-relation queries the response was YES. [2021-10-28 09:26:34,438 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3213 conditions, 929 events. 330/929 cut-off events. For 2169/2725 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 7416 event pairs, 6 based on Foata normal form. 147/993 useless extension candidates. Maximal degree in co-relation 3175. Up to 336 conditions per place. [2021-10-28 09:26:34,446 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 15 selfloop transitions, 31 changer transitions 6/120 dead transitions. [2021-10-28 09:26:34,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 120 transitions, 726 flow [2021-10-28 09:26:34,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:26:34,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 09:26:34,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 890 transitions. [2021-10-28 09:26:34,452 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8829365079365079 [2021-10-28 09:26:34,452 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 890 transitions. [2021-10-28 09:26:34,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 890 transitions. [2021-10-28 09:26:34,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:26:34,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 890 transitions. [2021-10-28 09:26:34,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 74.16666666666667) internal successors, (890), 12 states have internal predecessors, (890), 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 09:26:34,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 84.0) internal successors, (1092), 13 states have internal predecessors, (1092), 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 09:26:34,464 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 84.0) internal successors, (1092), 13 states have internal predecessors, (1092), 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 09:26:34,465 INFO L186 Difference]: Start difference. First operand has 107 places, 92 transitions, 441 flow. Second operand 12 states and 890 transitions. [2021-10-28 09:26:34,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 120 transitions, 726 flow [2021-10-28 09:26:34,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 120 transitions, 712 flow, removed 6 selfloop flow, removed 7 redundant places. [2021-10-28 09:26:34,481 INFO L242 Difference]: Finished difference. Result has 114 places, 111 transitions, 657 flow [2021-10-28 09:26:34,482 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=657, PETRI_PLACES=114, PETRI_TRANSITIONS=111} [2021-10-28 09:26:34,482 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 36 predicate places. [2021-10-28 09:26:34,482 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 111 transitions, 657 flow [2021-10-28 09:26:34,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 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 09:26:34,485 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:26:34,485 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:26:34,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:26:34,485 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:26:34,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:34,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1156607541, now seen corresponding path program 1 times [2021-10-28 09:26:34,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:26:34,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267745257] [2021-10-28 09:26:34,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:26:34,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:26:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:26:34,679 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 09:26:34,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:26:34,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267745257] [2021-10-28 09:26:34,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267745257] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:26:34,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:26:34,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:26:34,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167695643] [2021-10-28 09:26:34,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:26:34,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:26:34,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:26:34,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:26:34,684 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-10-28 09:26:34,685 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 111 transitions, 657 flow. Second operand has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:26:34,686 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:26:34,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-10-28 09:26:34,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:26:35,157 INFO L129 PetriNetUnfolder]: 281/854 cut-off events. [2021-10-28 09:26:35,158 INFO L130 PetriNetUnfolder]: For 3088/3793 co-relation queries the response was YES. [2021-10-28 09:26:35,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3480 conditions, 854 events. 281/854 cut-off events. For 3088/3793 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 7021 event pairs, 2 based on Foata normal form. 156/928 useless extension candidates. Maximal degree in co-relation 3418. Up to 292 conditions per place. [2021-10-28 09:26:35,180 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 10 selfloop transitions, 36 changer transitions 16/130 dead transitions. [2021-10-28 09:26:35,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 130 transitions, 911 flow [2021-10-28 09:26:35,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 09:26:35,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-28 09:26:35,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1101 transitions. [2021-10-28 09:26:35,187 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8738095238095238 [2021-10-28 09:26:35,187 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1101 transitions. [2021-10-28 09:26:35,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1101 transitions. [2021-10-28 09:26:35,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:26:35,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1101 transitions. [2021-10-28 09:26:35,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 73.4) internal successors, (1101), 15 states have internal predecessors, (1101), 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 09:26:35,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 84.0) internal successors, (1344), 16 states have internal predecessors, (1344), 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 09:26:35,203 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 84.0) internal successors, (1344), 16 states have internal predecessors, (1344), 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 09:26:35,203 INFO L186 Difference]: Start difference. First operand has 114 places, 111 transitions, 657 flow. Second operand 15 states and 1101 transitions. [2021-10-28 09:26:35,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 130 transitions, 911 flow [2021-10-28 09:26:35,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 130 transitions, 735 flow, removed 69 selfloop flow, removed 9 redundant places. [2021-10-28 09:26:35,251 INFO L242 Difference]: Finished difference. Result has 125 places, 111 transitions, 625 flow [2021-10-28 09:26:35,252 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=625, PETRI_PLACES=125, PETRI_TRANSITIONS=111} [2021-10-28 09:26:35,253 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 47 predicate places. [2021-10-28 09:26:35,253 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 111 transitions, 625 flow [2021-10-28 09:26:35,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:26:35,254 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:26:35,255 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] [2021-10-28 09:26:35,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:26:35,255 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:26:35,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:35,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1010533441, now seen corresponding path program 1 times [2021-10-28 09:26:35,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:26:35,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505450949] [2021-10-28 09:26:35,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:26:35,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:26:35,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:26:35,448 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 09:26:35,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:26:35,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505450949] [2021-10-28 09:26:35,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505450949] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:26:35,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:26:35,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:26:35,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416374775] [2021-10-28 09:26:35,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:26:35,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:26:35,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:26:35,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:26:35,452 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 84 [2021-10-28 09:26:35,453 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 111 transitions, 625 flow. Second operand has 7 states, 7 states have (on average 65.42857142857143) internal successors, (458), 7 states have internal predecessors, (458), 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 09:26:35,453 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:26:35,453 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 84 [2021-10-28 09:26:35,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:26:35,782 INFO L129 PetriNetUnfolder]: 276/1017 cut-off events. [2021-10-28 09:26:35,783 INFO L130 PetriNetUnfolder]: For 2317/2506 co-relation queries the response was YES. [2021-10-28 09:26:35,791 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3171 conditions, 1017 events. 276/1017 cut-off events. For 2317/2506 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9149 event pairs, 0 based on Foata normal form. 10/954 useless extension candidates. Maximal degree in co-relation 3105. Up to 123 conditions per place. [2021-10-28 09:26:35,796 INFO L132 encePairwiseOnDemand]: 71/84 looper letters, 20 selfloop transitions, 19 changer transitions 8/130 dead transitions. [2021-10-28 09:26:35,796 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 130 transitions, 849 flow [2021-10-28 09:26:35,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:26:35,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 09:26:35,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 540 transitions. [2021-10-28 09:26:35,799 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8035714285714286 [2021-10-28 09:26:35,800 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 540 transitions. [2021-10-28 09:26:35,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 540 transitions. [2021-10-28 09:26:35,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:26:35,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 540 transitions. [2021-10-28 09:26:35,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 67.5) internal successors, (540), 8 states have internal predecessors, (540), 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 09:26:35,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 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 09:26:35,805 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 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 09:26:35,806 INFO L186 Difference]: Start difference. First operand has 125 places, 111 transitions, 625 flow. Second operand 8 states and 540 transitions. [2021-10-28 09:26:35,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 130 transitions, 849 flow [2021-10-28 09:26:35,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 130 transitions, 762 flow, removed 19 selfloop flow, removed 14 redundant places. [2021-10-28 09:26:35,849 INFO L242 Difference]: Finished difference. Result has 122 places, 120 transitions, 697 flow [2021-10-28 09:26:35,850 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=697, PETRI_PLACES=122, PETRI_TRANSITIONS=120} [2021-10-28 09:26:35,850 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 44 predicate places. [2021-10-28 09:26:35,850 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 120 transitions, 697 flow [2021-10-28 09:26:35,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.42857142857143) internal successors, (458), 7 states have internal predecessors, (458), 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 09:26:35,851 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:26:35,851 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 09:26:35,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:26:35,852 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:26:35,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:35,853 INFO L85 PathProgramCache]: Analyzing trace with hash 529637461, now seen corresponding path program 2 times [2021-10-28 09:26:35,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:26:35,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710928859] [2021-10-28 09:26:35,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:26:35,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:26:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:26:35,995 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 09:26:35,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:26:35,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710928859] [2021-10-28 09:26:35,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710928859] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:26:35,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:26:35,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:26:35,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217792704] [2021-10-28 09:26:35,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:26:35,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:26:35,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:26:35,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:26:36,001 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 84 [2021-10-28 09:26:36,002 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 120 transitions, 697 flow. Second operand has 8 states, 8 states have (on average 65.125) internal successors, (521), 8 states have internal predecessors, (521), 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 09:26:36,003 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:26:36,003 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 84 [2021-10-28 09:26:36,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:26:36,375 INFO L129 PetriNetUnfolder]: 358/1299 cut-off events. [2021-10-28 09:26:36,376 INFO L130 PetriNetUnfolder]: For 2002/2202 co-relation queries the response was YES. [2021-10-28 09:26:36,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3858 conditions, 1299 events. 358/1299 cut-off events. For 2002/2202 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 12548 event pairs, 1 based on Foata normal form. 15/1224 useless extension candidates. Maximal degree in co-relation 3830. Up to 177 conditions per place. [2021-10-28 09:26:36,393 INFO L132 encePairwiseOnDemand]: 71/84 looper letters, 15 selfloop transitions, 15 changer transitions 18/131 dead transitions. [2021-10-28 09:26:36,394 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 131 transitions, 867 flow [2021-10-28 09:26:36,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:26:36,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 09:26:36,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 606 transitions. [2021-10-28 09:26:36,398 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8015873015873016 [2021-10-28 09:26:36,398 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 606 transitions. [2021-10-28 09:26:36,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 606 transitions. [2021-10-28 09:26:36,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:26:36,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 606 transitions. [2021-10-28 09:26:36,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 67.33333333333333) internal successors, (606), 9 states have internal predecessors, (606), 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 09:26:36,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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 09:26:36,405 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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 09:26:36,405 INFO L186 Difference]: Start difference. First operand has 122 places, 120 transitions, 697 flow. Second operand 9 states and 606 transitions. [2021-10-28 09:26:36,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 131 transitions, 867 flow [2021-10-28 09:26:36,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 131 transitions, 857 flow, removed 5 selfloop flow, removed 3 redundant places. [2021-10-28 09:26:36,488 INFO L242 Difference]: Finished difference. Result has 128 places, 111 transitions, 639 flow [2021-10-28 09:26:36,488 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=639, PETRI_PLACES=128, PETRI_TRANSITIONS=111} [2021-10-28 09:26:36,489 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 50 predicate places. [2021-10-28 09:26:36,489 INFO L470 AbstractCegarLoop]: Abstraction has has 128 places, 111 transitions, 639 flow [2021-10-28 09:26:36,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 65.125) internal successors, (521), 8 states have internal predecessors, (521), 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 09:26:36,490 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:26:36,490 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 09:26:36,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:26:36,494 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:26:36,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:36,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1406038617, now seen corresponding path program 3 times [2021-10-28 09:26:36,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:26:36,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146891916] [2021-10-28 09:26:36,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:26:36,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:26:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:26:36,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:26:36,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:26:36,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146891916] [2021-10-28 09:26:36,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146891916] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:26:36,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:26:36,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:26:36,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313956402] [2021-10-28 09:26:36,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:26:36,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:26:36,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:26:36,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:26:36,682 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-10-28 09:26:36,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 111 transitions, 639 flow. Second operand has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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 09:26:36,683 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:26:36,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-10-28 09:26:36,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:26:36,966 INFO L129 PetriNetUnfolder]: 299/1153 cut-off events. [2021-10-28 09:26:36,967 INFO L130 PetriNetUnfolder]: For 1833/1928 co-relation queries the response was YES. [2021-10-28 09:26:36,976 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3399 conditions, 1153 events. 299/1153 cut-off events. For 1833/1928 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 11122 event pairs, 0 based on Foata normal form. 4/1078 useless extension candidates. Maximal degree in co-relation 3369. Up to 158 conditions per place. [2021-10-28 09:26:36,979 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 9 selfloop transitions, 6 changer transitions 49/122 dead transitions. [2021-10-28 09:26:36,980 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 122 transitions, 803 flow [2021-10-28 09:26:36,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:26:36,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 09:26:36,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 547 transitions. [2021-10-28 09:26:36,983 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8139880952380952 [2021-10-28 09:26:36,983 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 547 transitions. [2021-10-28 09:26:36,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 547 transitions. [2021-10-28 09:26:36,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:26:36,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 547 transitions. [2021-10-28 09:26:36,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 68.375) internal successors, (547), 8 states have internal predecessors, (547), 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 09:26:36,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 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 09:26:36,990 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 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 09:26:36,990 INFO L186 Difference]: Start difference. First operand has 128 places, 111 transitions, 639 flow. Second operand 8 states and 547 transitions. [2021-10-28 09:26:36,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 122 transitions, 803 flow [2021-10-28 09:26:37,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 122 transitions, 744 flow, removed 7 selfloop flow, removed 9 redundant places. [2021-10-28 09:26:37,033 INFO L242 Difference]: Finished difference. Result has 126 places, 73 transitions, 321 flow [2021-10-28 09:26:37,034 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=321, PETRI_PLACES=126, PETRI_TRANSITIONS=73} [2021-10-28 09:26:37,034 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 48 predicate places. [2021-10-28 09:26:37,034 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 73 transitions, 321 flow [2021-10-28 09:26:37,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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 09:26:37,035 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:26:37,035 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 09:26:37,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 09:26:37,036 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:26:37,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:37,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1998189863, now seen corresponding path program 4 times [2021-10-28 09:26:37,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:26:37,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854958537] [2021-10-28 09:26:37,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:26:37,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:26:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:26:37,179 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 09:26:37,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:26:37,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854958537] [2021-10-28 09:26:37,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854958537] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:26:37,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:26:37,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:26:37,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582827525] [2021-10-28 09:26:37,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:26:37,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:26:37,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:26:37,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:26:37,189 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-10-28 09:26:37,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 73 transitions, 321 flow. Second operand has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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 09:26:37,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:26:37,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-10-28 09:26:37,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:26:37,273 INFO L129 PetriNetUnfolder]: 6/95 cut-off events. [2021-10-28 09:26:37,274 INFO L130 PetriNetUnfolder]: For 135/136 co-relation queries the response was YES. [2021-10-28 09:26:37,274 INFO L84 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 95 events. 6/95 cut-off events. For 135/136 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 159 event pairs, 0 based on Foata normal form. 2/97 useless extension candidates. Maximal degree in co-relation 226. Up to 11 conditions per place. [2021-10-28 09:26:37,275 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2021-10-28 09:26:37,275 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 71 transitions, 343 flow [2021-10-28 09:26:37,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:26:37,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 09:26:37,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 600 transitions. [2021-10-28 09:26:37,279 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7936507936507936 [2021-10-28 09:26:37,279 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 600 transitions. [2021-10-28 09:26:37,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 600 transitions. [2021-10-28 09:26:37,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:26:37,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 600 transitions. [2021-10-28 09:26:37,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 66.66666666666667) internal successors, (600), 9 states have internal predecessors, (600), 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 09:26:37,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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 09:26:37,288 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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 09:26:37,289 INFO L186 Difference]: Start difference. First operand has 126 places, 73 transitions, 321 flow. Second operand 9 states and 600 transitions. [2021-10-28 09:26:37,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 71 transitions, 343 flow [2021-10-28 09:26:37,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 71 transitions, 230 flow, removed 18 selfloop flow, removed 28 redundant places. [2021-10-28 09:26:37,292 INFO L242 Difference]: Finished difference. Result has 91 places, 0 transitions, 0 flow [2021-10-28 09:26:37,293 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=91, PETRI_TRANSITIONS=0} [2021-10-28 09:26:37,293 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2021-10-28 09:26:37,294 INFO L470 AbstractCegarLoop]: Abstraction has has 91 places, 0 transitions, 0 flow [2021-10-28 09:26:37,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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 09:26:37,297 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:26:37,298 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 09:26:37,298 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 09:26:37,298 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-28 09:26:37,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 09:26:37,303 INFO L731 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1] [2021-10-28 09:26:37,308 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 09:26:37,309 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:26:37,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:26:37 BasicIcfg [2021-10-28 09:26:37,312 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:26:37,314 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:26:37,315 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:26:37,315 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:26:37,315 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:26:30" (3/4) ... [2021-10-28 09:26:37,319 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:26:37,327 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-28 09:26:37,327 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-28 09:26:37,327 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-28 09:26:37,335 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-28 09:26:37,335 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:26:37,335 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:26:37,336 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:26:37,390 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a4b1b1-9a26-4a85-ac4e-83f1b33ffa39/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:26:37,391 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:26:37,392 INFO L168 Benchmark]: Toolchain (without parser) took 8195.68 ms. Allocated memory was 113.2 MB in the beginning and 176.2 MB in the end (delta: 62.9 MB). Free memory was 73.9 MB in the beginning and 128.4 MB in the end (delta: -54.5 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:26:37,393 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 113.2 MB. Free memory was 91.9 MB in the beginning and 91.8 MB in the end (delta: 64.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:26:37,393 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.28 ms. Allocated memory is still 113.2 MB. Free memory was 73.7 MB in the beginning and 77.8 MB in the end (delta: -4.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:26:37,394 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.59 ms. Allocated memory is still 113.2 MB. Free memory was 77.8 MB in the beginning and 75.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:26:37,394 INFO L168 Benchmark]: Boogie Preprocessor took 62.09 ms. Allocated memory is still 113.2 MB. Free memory was 75.9 MB in the beginning and 74.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:26:37,395 INFO L168 Benchmark]: RCFGBuilder took 564.78 ms. Allocated memory is still 113.2 MB. Free memory was 74.4 MB in the beginning and 62.6 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:26:37,395 INFO L168 Benchmark]: TraceAbstraction took 6739.65 ms. Allocated memory was 113.2 MB in the beginning and 176.2 MB in the end (delta: 62.9 MB). Free memory was 61.9 MB in the beginning and 131.5 MB in the end (delta: -69.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:26:37,396 INFO L168 Benchmark]: Witness Printer took 76.42 ms. Allocated memory is still 176.2 MB. Free memory was 131.5 MB in the beginning and 128.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:26:37,405 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 113.2 MB. Free memory was 91.9 MB in the beginning and 91.8 MB in the end (delta: 64.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 657.28 ms. Allocated memory is still 113.2 MB. Free memory was 73.7 MB in the beginning and 77.8 MB in the end (delta: -4.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.59 ms. Allocated memory is still 113.2 MB. Free memory was 77.8 MB in the beginning and 75.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.09 ms. Allocated memory is still 113.2 MB. Free memory was 75.9 MB in the beginning and 74.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 564.78 ms. Allocated memory is still 113.2 MB. Free memory was 74.4 MB in the beginning and 62.6 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6739.65 ms. Allocated memory was 113.2 MB in the beginning and 176.2 MB in the end (delta: 62.9 MB). Free memory was 61.9 MB in the beginning and 131.5 MB in the end (delta: -69.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 76.42 ms. Allocated memory is still 176.2 MB. Free memory was 131.5 MB in the beginning and 128.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.5s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 273 SDslu, 397 SDs, 0 SdLazy, 488 SolverSat, 109 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=697occurred in iteration=7, InterpolantAutomatonStates: 105, 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, 563 NumberOfCodeBlocks, 563 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 553 ConstructedInterpolants, 0 QuantifiedInterpolants, 2161 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 09:26:37,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a4b1b1-9a26-4a85-ac4e-83f1b33ffa39/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...