./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_843577d1-46aa-4b25-a6b1-619ff46f1637/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_843577d1-46aa-4b25-a6b1-619ff46f1637/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_843577d1-46aa-4b25-a6b1-619ff46f1637/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_843577d1-46aa-4b25-a6b1-619ff46f1637/bin/uautomizer-GMMbpWq8iD/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_843577d1-46aa-4b25-a6b1-619ff46f1637/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_843577d1-46aa-4b25-a6b1-619ff46f1637/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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 23:18:39,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:18:39,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:18:40,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:18:40,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:18:40,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:18:40,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:18:40,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:18:40,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:18:40,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:18:40,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:18:40,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:18:40,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:18:40,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:18:40,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:18:40,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:18:40,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:18:40,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:18:40,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:18:40,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:18:40,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:18:40,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:18:40,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:18:40,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:18:40,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:18:40,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:18:40,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:18:40,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:18:40,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:18:40,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:18:40,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:18:40,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:18:40,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:18:40,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:18:40,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:18:40,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:18:40,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:18:40,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:18:40,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:18:40,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:18:40,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:18:40,082 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_843577d1-46aa-4b25-a6b1-619ff46f1637/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:18:40,105 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:18:40,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:18:40,106 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:18:40,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:18:40,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:18:40,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:18:40,119 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:18:40,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:18:40,120 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:18:40,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:18:40,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:18:40,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:18:40,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:18:40,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:18:40,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:18:40,121 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:18:40,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:18:40,122 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:18:40,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:18:40,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:18:40,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:18:40,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:18:40,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:18:40,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:18:40,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:18:40,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:18:40,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:18:40,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:18:40,124 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:18:40,125 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:18:40,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:18:40,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:18:40,125 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_843577d1-46aa-4b25-a6b1-619ff46f1637/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_843577d1-46aa-4b25-a6b1-619ff46f1637/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9071d56f4666aca734ab742196d3aa15fce92ad6b7c276706d2cff43d2d6147a [2021-10-28 23:18:40,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:18:40,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:18:40,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:18:40,431 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:18:40,432 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:18:40,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_843577d1-46aa-4b25-a6b1-619ff46f1637/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-28 23:18:40,509 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_843577d1-46aa-4b25-a6b1-619ff46f1637/bin/uautomizer-GMMbpWq8iD/data/cdd8cd0c9/3309ac1b0e1b4c82ad500fcc730a1eb3/FLAG73d521b94 [2021-10-28 23:18:41,070 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:18:41,077 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_843577d1-46aa-4b25-a6b1-619ff46f1637/sv-benchmarks/c/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-28 23:18:41,095 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_843577d1-46aa-4b25-a6b1-619ff46f1637/bin/uautomizer-GMMbpWq8iD/data/cdd8cd0c9/3309ac1b0e1b4c82ad500fcc730a1eb3/FLAG73d521b94 [2021-10-28 23:18:41,365 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_843577d1-46aa-4b25-a6b1-619ff46f1637/bin/uautomizer-GMMbpWq8iD/data/cdd8cd0c9/3309ac1b0e1b4c82ad500fcc730a1eb3 [2021-10-28 23:18:41,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:18:41,369 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:18:41,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:18:41,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:18:41,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:18:41,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:18:41" (1/1) ... [2021-10-28 23:18:41,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53f88177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:41, skipping insertion in model container [2021-10-28 23:18:41,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:18:41" (1/1) ... [2021-10-28 23:18:41,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:18:41,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:18:41,633 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_843577d1-46aa-4b25-a6b1-619ff46f1637/sv-benchmarks/c/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-10-28 23:18:41,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:18:41,795 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:18:41,807 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_843577d1-46aa-4b25-a6b1-619ff46f1637/sv-benchmarks/c/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-10-28 23:18:41,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:18:41,873 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:18:41,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:41 WrapperNode [2021-10-28 23:18:41,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:18:41,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:18:41,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:18:41,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:18:41,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:41" (1/1) ... [2021-10-28 23:18:41,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:41" (1/1) ... [2021-10-28 23:18:41,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:18:41,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:18:41,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:18:41,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:18:41,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:41" (1/1) ... [2021-10-28 23:18:41,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:41" (1/1) ... [2021-10-28 23:18:41,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:41" (1/1) ... [2021-10-28 23:18:41,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:41" (1/1) ... [2021-10-28 23:18:41,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:41" (1/1) ... [2021-10-28 23:18:41,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:41" (1/1) ... [2021-10-28 23:18:41,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:41" (1/1) ... [2021-10-28 23:18:41,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:18:41,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:18:41,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:18:41,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:18:41,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:41" (1/1) ... [2021-10-28 23:18:41,955 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:18:41,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_843577d1-46aa-4b25-a6b1-619ff46f1637/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:18:41,981 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_843577d1-46aa-4b25-a6b1-619ff46f1637/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:18:41,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_843577d1-46aa-4b25-a6b1-619ff46f1637/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:18:42,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:18:42,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 23:18:42,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:18:42,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:18:42,033 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-28 23:18:42,033 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-28 23:18:42,033 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-28 23:18:42,033 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-28 23:18:42,033 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-28 23:18:42,034 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-28 23:18:42,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:18:42,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 23:18:42,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:18:42,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:18:42,036 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 23:18:42,461 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:18:42,461 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-28 23:18:42,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:18:42 BoogieIcfgContainer [2021-10-28 23:18:42,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:18:42,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:18:42,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:18:42,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:18:42,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:18:41" (1/3) ... [2021-10-28 23:18:42,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498c147c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:18:42, skipping insertion in model container [2021-10-28 23:18:42,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:41" (2/3) ... [2021-10-28 23:18:42,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498c147c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:18:42, skipping insertion in model container [2021-10-28 23:18:42,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:18:42" (3/3) ... [2021-10-28 23:18:42,473 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-28 23:18:42,478 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 23:18:42,478 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:18:42,479 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:18:42,479 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 23:18:42,508 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,508 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,508 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,509 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,509 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,509 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,509 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,510 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,510 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,510 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,511 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,511 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,511 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,512 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,512 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,512 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,512 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,512 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,513 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,513 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,513 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,514 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,514 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,514 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,515 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,515 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,515 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,515 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,515 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,516 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,516 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,516 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,516 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,517 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,517 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,517 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,520 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,521 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,521 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,521 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,526 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,526 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,526 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,527 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,529 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,529 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,530 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,530 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:18:42,532 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-28 23:18:42,580 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:18:42,587 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:18:42,587 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-28 23:18:42,599 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-10-28 23:18:42,641 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-10-28 23:18:42,642 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 23:18:42,646 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 23:18:42,646 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2021-10-28 23:18:42,651 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2021-10-28 23:18:42,673 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2021-10-28 23:18:42,674 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 23:18:42,674 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:18:42,675 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 23:18:42,675 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 23:18:42,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:42,680 INFO L85 PathProgramCache]: Analyzing trace with hash -206144659, now seen corresponding path program 1 times [2021-10-28 23:18:42,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:42,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901229889] [2021-10-28 23:18:42,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:42,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:43,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:18:43,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:18:43,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901229889] [2021-10-28 23:18:43,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901229889] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:18:43,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:18:43,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:18:43,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869751920] [2021-10-28 23:18:43,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:18:43,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:18:43,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:18:43,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:18:43,158 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 84 [2021-10-28 23:18:43,176 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 23:18:43,176 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:18:43,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 84 [2021-10-28 23:18:43,178 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:18:43,397 INFO L129 PetriNetUnfolder]: 3/83 cut-off events. [2021-10-28 23:18:43,398 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 23:18:43,398 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 23:18:43,400 INFO L132 encePairwiseOnDemand]: 77/84 looper letters, 6 selfloop transitions, 2 changer transitions 11/78 dead transitions. [2021-10-28 23:18:43,400 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 78 transitions, 201 flow [2021-10-28 23:18:43,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:18:43,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 23:18:43,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 670 transitions. [2021-10-28 23:18:43,433 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8862433862433863 [2021-10-28 23:18:43,447 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 670 transitions. [2021-10-28 23:18:43,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 670 transitions. [2021-10-28 23:18:43,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:18:43,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 670 transitions. [2021-10-28 23:18:43,460 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 23:18:43,471 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 23:18:43,472 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 23:18:43,474 INFO L186 Difference]: Start difference. First operand has 78 places, 69 transitions, 147 flow. Second operand 9 states and 670 transitions. [2021-10-28 23:18:43,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 78 transitions, 201 flow [2021-10-28 23:18:43,479 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 23:18:43,491 INFO L242 Difference]: Finished difference. Result has 90 places, 67 transitions, 160 flow [2021-10-28 23:18:43,493 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 23:18:43,494 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 12 predicate places. [2021-10-28 23:18:43,494 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 67 transitions, 160 flow [2021-10-28 23:18:43,494 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 23:18:43,494 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:18:43,495 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 23:18:43,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:18:43,495 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 23:18:43,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:43,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1072234386, now seen corresponding path program 1 times [2021-10-28 23:18:43,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:43,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585181031] [2021-10-28 23:18:43,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:43,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:43,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:18:43,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:18:43,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585181031] [2021-10-28 23:18:43,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585181031] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:18:43,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:18:43,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:18:43,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189779367] [2021-10-28 23:18:43,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:18:43,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:18:43,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:18:43,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:18:43,726 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-10-28 23:18:43,727 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 23:18:43,727 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:18:43,727 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-10-28 23:18:43,727 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:18:44,188 INFO L129 PetriNetUnfolder]: 185/517 cut-off events. [2021-10-28 23:18:44,188 INFO L130 PetriNetUnfolder]: For 150/195 co-relation queries the response was YES. [2021-10-28 23:18:44,193 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 23:18:44,197 INFO L132 encePairwiseOnDemand]: 72/84 looper letters, 18 selfloop transitions, 8 changer transitions 38/116 dead transitions. [2021-10-28 23:18:44,197 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 116 transitions, 432 flow [2021-10-28 23:18:44,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:18:44,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 23:18:44,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 912 transitions. [2021-10-28 23:18:44,203 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8351648351648352 [2021-10-28 23:18:44,203 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 912 transitions. [2021-10-28 23:18:44,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 912 transitions. [2021-10-28 23:18:44,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:18:44,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 912 transitions. [2021-10-28 23:18:44,208 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 23:18:44,213 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 23:18:44,214 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 23:18:44,214 INFO L186 Difference]: Start difference. First operand has 90 places, 67 transitions, 160 flow. Second operand 13 states and 912 transitions. [2021-10-28 23:18:44,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 116 transitions, 432 flow [2021-10-28 23:18:44,220 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 23:18:44,223 INFO L242 Difference]: Finished difference. Result has 99 places, 71 transitions, 233 flow [2021-10-28 23:18:44,223 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 23:18:44,224 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 21 predicate places. [2021-10-28 23:18:44,224 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 71 transitions, 233 flow [2021-10-28 23:18:44,225 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 23:18:44,225 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:18:44,225 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 23:18:44,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:18:44,225 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 23:18:44,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:44,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1696847475, now seen corresponding path program 1 times [2021-10-28 23:18:44,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:44,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039319665] [2021-10-28 23:18:44,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:44,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:44,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:18:44,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:18:44,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039319665] [2021-10-28 23:18:44,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039319665] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:18:44,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:18:44,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:18:44,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441540705] [2021-10-28 23:18:44,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:18:44,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:18:44,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:18:44,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:18:44,445 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-10-28 23:18:44,446 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 23:18:44,446 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:18:44,446 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-10-28 23:18:44,446 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:18:44,796 INFO L129 PetriNetUnfolder]: 99/356 cut-off events. [2021-10-28 23:18:44,796 INFO L130 PetriNetUnfolder]: For 765/1050 co-relation queries the response was YES. [2021-10-28 23:18:44,799 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 23:18:44,802 INFO L132 encePairwiseOnDemand]: 72/84 looper letters, 19 selfloop transitions, 13 changer transitions 34/118 dead transitions. [2021-10-28 23:18:44,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 118 transitions, 703 flow [2021-10-28 23:18:44,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:18:44,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 23:18:44,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 902 transitions. [2021-10-28 23:18:44,807 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.826007326007326 [2021-10-28 23:18:44,807 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 902 transitions. [2021-10-28 23:18:44,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 902 transitions. [2021-10-28 23:18:44,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:18:44,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 902 transitions. [2021-10-28 23:18:44,813 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 23:18:44,816 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 23:18:44,817 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 23:18:44,817 INFO L186 Difference]: Start difference. First operand has 99 places, 71 transitions, 233 flow. Second operand 13 states and 902 transitions. [2021-10-28 23:18:44,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 118 transitions, 703 flow [2021-10-28 23:18:44,823 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 23:18:44,826 INFO L242 Difference]: Finished difference. Result has 110 places, 78 transitions, 364 flow [2021-10-28 23:18:44,827 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 23:18:44,827 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 32 predicate places. [2021-10-28 23:18:44,827 INFO L470 AbstractCegarLoop]: Abstraction has has 110 places, 78 transitions, 364 flow [2021-10-28 23:18:44,828 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 23:18:44,828 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:18:44,828 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 23:18:44,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:18:44,829 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 23:18:44,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:44,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1816831443, now seen corresponding path program 1 times [2021-10-28 23:18:44,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:44,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791046039] [2021-10-28 23:18:44,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:44,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:44,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:18:44,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:18:44,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791046039] [2021-10-28 23:18:44,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791046039] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:18:44,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:18:44,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:18:44,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782059382] [2021-10-28 23:18:44,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:18:44,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:18:44,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:18:44,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:18:44,957 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-10-28 23:18:44,958 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 23:18:44,958 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:18:44,958 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-10-28 23:18:44,958 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:18:45,243 INFO L129 PetriNetUnfolder]: 362/953 cut-off events. [2021-10-28 23:18:45,243 INFO L130 PetriNetUnfolder]: For 782/837 co-relation queries the response was YES. [2021-10-28 23:18:45,250 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 23:18:45,258 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 19 selfloop transitions, 16 changer transitions 0/103 dead transitions. [2021-10-28 23:18:45,258 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 103 transitions, 484 flow [2021-10-28 23:18:45,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:18:45,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 23:18:45,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 667 transitions. [2021-10-28 23:18:45,261 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8822751322751323 [2021-10-28 23:18:45,261 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 667 transitions. [2021-10-28 23:18:45,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 667 transitions. [2021-10-28 23:18:45,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:18:45,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 667 transitions. [2021-10-28 23:18:45,264 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 23:18:45,267 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 23:18:45,267 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 23:18:45,267 INFO L186 Difference]: Start difference. First operand has 110 places, 78 transitions, 364 flow. Second operand 9 states and 667 transitions. [2021-10-28 23:18:45,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 103 transitions, 484 flow [2021-10-28 23:18:45,274 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 23:18:45,276 INFO L242 Difference]: Finished difference. Result has 107 places, 92 transitions, 441 flow [2021-10-28 23:18:45,277 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 23:18:45,277 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 29 predicate places. [2021-10-28 23:18:45,277 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 92 transitions, 441 flow [2021-10-28 23:18:45,277 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 23:18:45,278 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:18:45,278 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 23:18:45,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:18:45,278 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 23:18:45,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:45,279 INFO L85 PathProgramCache]: Analyzing trace with hash 340118128, now seen corresponding path program 1 times [2021-10-28 23:18:45,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:45,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307195845] [2021-10-28 23:18:45,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:45,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:45,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:18:45,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:18:45,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307195845] [2021-10-28 23:18:45,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307195845] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:18:45,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:18:45,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:18:45,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943913391] [2021-10-28 23:18:45,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:18:45,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:18:45,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:18:45,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:18:45,401 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-10-28 23:18:45,401 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 23:18:45,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:18:45,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-10-28 23:18:45,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:18:45,753 INFO L129 PetriNetUnfolder]: 330/929 cut-off events. [2021-10-28 23:18:45,753 INFO L130 PetriNetUnfolder]: For 2169/2725 co-relation queries the response was YES. [2021-10-28 23:18:45,762 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 23:18:45,770 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 15 selfloop transitions, 31 changer transitions 6/120 dead transitions. [2021-10-28 23:18:45,770 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 120 transitions, 726 flow [2021-10-28 23:18:45,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:18:45,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 23:18:45,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 890 transitions. [2021-10-28 23:18:45,776 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8829365079365079 [2021-10-28 23:18:45,776 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 890 transitions. [2021-10-28 23:18:45,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 890 transitions. [2021-10-28 23:18:45,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:18:45,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 890 transitions. [2021-10-28 23:18:45,781 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 23:18:45,786 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 23:18:45,788 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 23:18:45,788 INFO L186 Difference]: Start difference. First operand has 107 places, 92 transitions, 441 flow. Second operand 12 states and 890 transitions. [2021-10-28 23:18:45,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 120 transitions, 726 flow [2021-10-28 23:18:45,799 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 23:18:45,802 INFO L242 Difference]: Finished difference. Result has 114 places, 111 transitions, 657 flow [2021-10-28 23:18:45,802 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 23:18:45,802 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 36 predicate places. [2021-10-28 23:18:45,803 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 111 transitions, 657 flow [2021-10-28 23:18:45,803 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 23:18:45,803 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:18:45,803 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 23:18:45,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:18:45,804 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 23:18:45,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:45,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1156607541, now seen corresponding path program 1 times [2021-10-28 23:18:45,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:45,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501973685] [2021-10-28 23:18:45,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:45,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:45,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:18:45,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:18:45,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501973685] [2021-10-28 23:18:45,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501973685] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:18:45,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:18:45,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:18:45,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670359266] [2021-10-28 23:18:45,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:18:45,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:18:45,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:18:45,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:18:45,971 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-10-28 23:18:45,972 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 23:18:45,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:18:45,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-10-28 23:18:45,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:18:46,433 INFO L129 PetriNetUnfolder]: 281/854 cut-off events. [2021-10-28 23:18:46,433 INFO L130 PetriNetUnfolder]: For 3088/3793 co-relation queries the response was YES. [2021-10-28 23:18:46,441 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 23:18:46,448 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 10 selfloop transitions, 36 changer transitions 16/130 dead transitions. [2021-10-28 23:18:46,448 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 130 transitions, 911 flow [2021-10-28 23:18:46,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 23:18:46,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-28 23:18:46,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1101 transitions. [2021-10-28 23:18:46,452 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8738095238095238 [2021-10-28 23:18:46,452 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1101 transitions. [2021-10-28 23:18:46,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1101 transitions. [2021-10-28 23:18:46,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:18:46,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1101 transitions. [2021-10-28 23:18:46,457 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 23:18:46,461 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 23:18:46,462 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 23:18:46,462 INFO L186 Difference]: Start difference. First operand has 114 places, 111 transitions, 657 flow. Second operand 15 states and 1101 transitions. [2021-10-28 23:18:46,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 130 transitions, 911 flow [2021-10-28 23:18:46,495 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 23:18:46,498 INFO L242 Difference]: Finished difference. Result has 125 places, 111 transitions, 625 flow [2021-10-28 23:18:46,498 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 23:18:46,498 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 47 predicate places. [2021-10-28 23:18:46,498 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 111 transitions, 625 flow [2021-10-28 23:18:46,499 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 23:18:46,499 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:18:46,499 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:18:46,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:18:46,500 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 23:18:46,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:46,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1010533441, now seen corresponding path program 1 times [2021-10-28 23:18:46,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:46,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166955493] [2021-10-28 23:18:46,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:46,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:46,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:18:46,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:18:46,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166955493] [2021-10-28 23:18:46,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166955493] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:18:46,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:18:46,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:18:46,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031022149] [2021-10-28 23:18:46,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:18:46,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:18:46,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:18:46,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:18:46,614 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 84 [2021-10-28 23:18:46,615 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 23:18:46,615 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:18:46,615 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 84 [2021-10-28 23:18:46,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:18:46,909 INFO L129 PetriNetUnfolder]: 276/1017 cut-off events. [2021-10-28 23:18:46,909 INFO L130 PetriNetUnfolder]: For 2317/2506 co-relation queries the response was YES. [2021-10-28 23:18:46,918 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 23:18:46,923 INFO L132 encePairwiseOnDemand]: 71/84 looper letters, 20 selfloop transitions, 19 changer transitions 8/130 dead transitions. [2021-10-28 23:18:46,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 130 transitions, 849 flow [2021-10-28 23:18:46,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:18:46,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 23:18:46,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 540 transitions. [2021-10-28 23:18:46,926 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8035714285714286 [2021-10-28 23:18:46,926 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 540 transitions. [2021-10-28 23:18:46,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 540 transitions. [2021-10-28 23:18:46,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:18:46,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 540 transitions. [2021-10-28 23:18:46,929 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 23:18:46,931 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 23:18:46,932 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 23:18:46,932 INFO L186 Difference]: Start difference. First operand has 125 places, 111 transitions, 625 flow. Second operand 8 states and 540 transitions. [2021-10-28 23:18:46,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 130 transitions, 849 flow [2021-10-28 23:18:46,973 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 23:18:46,976 INFO L242 Difference]: Finished difference. Result has 122 places, 120 transitions, 697 flow [2021-10-28 23:18:46,976 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 23:18:46,977 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 44 predicate places. [2021-10-28 23:18:46,977 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 120 transitions, 697 flow [2021-10-28 23:18:46,977 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 23:18:46,977 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:18:46,977 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:18:46,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:18:46,978 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 23:18:46,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:46,978 INFO L85 PathProgramCache]: Analyzing trace with hash 529637461, now seen corresponding path program 2 times [2021-10-28 23:18:46,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:46,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133779583] [2021-10-28 23:18:46,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:46,979 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:47,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:18:47,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:18:47,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133779583] [2021-10-28 23:18:47,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133779583] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:18:47,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:18:47,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:18:47,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13197415] [2021-10-28 23:18:47,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:18:47,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:18:47,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:18:47,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:18:47,104 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 84 [2021-10-28 23:18:47,105 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 23:18:47,105 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:18:47,105 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 84 [2021-10-28 23:18:47,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:18:47,407 INFO L129 PetriNetUnfolder]: 358/1299 cut-off events. [2021-10-28 23:18:47,407 INFO L130 PetriNetUnfolder]: For 2002/2202 co-relation queries the response was YES. [2021-10-28 23:18:47,416 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 23:18:47,420 INFO L132 encePairwiseOnDemand]: 71/84 looper letters, 15 selfloop transitions, 15 changer transitions 18/131 dead transitions. [2021-10-28 23:18:47,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 131 transitions, 867 flow [2021-10-28 23:18:47,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:18:47,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 23:18:47,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 606 transitions. [2021-10-28 23:18:47,423 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8015873015873016 [2021-10-28 23:18:47,423 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 606 transitions. [2021-10-28 23:18:47,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 606 transitions. [2021-10-28 23:18:47,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:18:47,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 606 transitions. [2021-10-28 23:18:47,426 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 23:18:47,428 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 23:18:47,429 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 23:18:47,429 INFO L186 Difference]: Start difference. First operand has 122 places, 120 transitions, 697 flow. Second operand 9 states and 606 transitions. [2021-10-28 23:18:47,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 131 transitions, 867 flow [2021-10-28 23:18:47,474 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 23:18:47,477 INFO L242 Difference]: Finished difference. Result has 128 places, 111 transitions, 639 flow [2021-10-28 23:18:47,477 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 23:18:47,477 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 50 predicate places. [2021-10-28 23:18:47,477 INFO L470 AbstractCegarLoop]: Abstraction has has 128 places, 111 transitions, 639 flow [2021-10-28 23:18:47,478 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 23:18:47,478 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:18:47,478 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:18:47,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:18:47,479 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 23:18:47,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:47,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1406038617, now seen corresponding path program 3 times [2021-10-28 23:18:47,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:47,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907311054] [2021-10-28 23:18:47,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:47,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:47,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:18:47,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:18:47,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907311054] [2021-10-28 23:18:47,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907311054] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:18:47,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:18:47,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:18:47,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217714795] [2021-10-28 23:18:47,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:18:47,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:18:47,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:18:47,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:18:47,656 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-10-28 23:18:47,657 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 23:18:47,657 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:18:47,657 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-10-28 23:18:47,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:18:47,906 INFO L129 PetriNetUnfolder]: 299/1153 cut-off events. [2021-10-28 23:18:47,906 INFO L130 PetriNetUnfolder]: For 1833/1928 co-relation queries the response was YES. [2021-10-28 23:18:47,914 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 23:18:47,916 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 9 selfloop transitions, 6 changer transitions 49/122 dead transitions. [2021-10-28 23:18:47,916 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 122 transitions, 803 flow [2021-10-28 23:18:47,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:18:47,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 23:18:47,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 547 transitions. [2021-10-28 23:18:47,919 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8139880952380952 [2021-10-28 23:18:47,919 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 547 transitions. [2021-10-28 23:18:47,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 547 transitions. [2021-10-28 23:18:47,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:18:47,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 547 transitions. [2021-10-28 23:18:47,921 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 23:18:47,924 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 23:18:47,924 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 23:18:47,924 INFO L186 Difference]: Start difference. First operand has 128 places, 111 transitions, 639 flow. Second operand 8 states and 547 transitions. [2021-10-28 23:18:47,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 122 transitions, 803 flow [2021-10-28 23:18:47,951 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 23:18:47,953 INFO L242 Difference]: Finished difference. Result has 126 places, 73 transitions, 321 flow [2021-10-28 23:18:47,953 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 23:18:47,954 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 48 predicate places. [2021-10-28 23:18:47,954 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 73 transitions, 321 flow [2021-10-28 23:18:47,954 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 23:18:47,954 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:18:47,954 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:18:47,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 23:18:47,955 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 23:18:47,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:47,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1998189863, now seen corresponding path program 4 times [2021-10-28 23:18:47,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:47,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711766468] [2021-10-28 23:18:47,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:47,957 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:48,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:18:48,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:18:48,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711766468] [2021-10-28 23:18:48,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711766468] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:18:48,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:18:48,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:18:48,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760560344] [2021-10-28 23:18:48,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:18:48,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:18:48,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:18:48,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:18:48,145 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-10-28 23:18:48,146 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 23:18:48,146 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:18:48,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-10-28 23:18:48,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:18:48,230 INFO L129 PetriNetUnfolder]: 6/95 cut-off events. [2021-10-28 23:18:48,231 INFO L130 PetriNetUnfolder]: For 135/136 co-relation queries the response was YES. [2021-10-28 23:18:48,231 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 23:18:48,231 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2021-10-28 23:18:48,232 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 71 transitions, 343 flow [2021-10-28 23:18:48,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:18:48,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 23:18:48,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 600 transitions. [2021-10-28 23:18:48,235 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7936507936507936 [2021-10-28 23:18:48,235 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 600 transitions. [2021-10-28 23:18:48,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 600 transitions. [2021-10-28 23:18:48,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:18:48,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 600 transitions. [2021-10-28 23:18:48,240 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 23:18:48,242 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 23:18:48,243 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 23:18:48,243 INFO L186 Difference]: Start difference. First operand has 126 places, 73 transitions, 321 flow. Second operand 9 states and 600 transitions. [2021-10-28 23:18:48,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 71 transitions, 343 flow [2021-10-28 23:18:48,245 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 23:18:48,246 INFO L242 Difference]: Finished difference. Result has 91 places, 0 transitions, 0 flow [2021-10-28 23:18:48,247 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 23:18:48,247 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2021-10-28 23:18:48,247 INFO L470 AbstractCegarLoop]: Abstraction has has 91 places, 0 transitions, 0 flow [2021-10-28 23:18:48,248 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 23:18:48,250 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:18:48,251 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 23:18:48,251 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 23:18:48,252 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-28 23:18:48,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 23:18:48,256 INFO L731 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1] [2021-10-28 23:18:48,260 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 23:18:48,260 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:18:48,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:18:48 BasicIcfg [2021-10-28 23:18:48,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:18:48,265 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:18:48,265 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:18:48,265 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:18:48,266 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:18:42" (3/4) ... [2021-10-28 23:18:48,268 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:18:48,275 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-28 23:18:48,275 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-28 23:18:48,275 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-28 23:18:48,281 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-28 23:18:48,282 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:18:48,282 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:18:48,282 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:18:48,345 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_843577d1-46aa-4b25-a6b1-619ff46f1637/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:18:48,345 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:18:48,346 INFO L168 Benchmark]: Toolchain (without parser) took 6976.54 ms. Allocated memory was 119.5 MB in the beginning and 192.9 MB in the end (delta: 73.4 MB). Free memory was 81.7 MB in the beginning and 60.9 MB in the end (delta: 20.8 MB). Peak memory consumption was 93.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:18:48,347 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 119.5 MB. Free memory is still 100.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:18:48,348 INFO L168 Benchmark]: CACSL2BoogieTranslator took 504.17 ms. Allocated memory is still 119.5 MB. Free memory was 81.5 MB in the beginning and 86.8 MB in the end (delta: -5.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:18:48,348 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.36 ms. Allocated memory is still 119.5 MB. Free memory was 86.3 MB in the beginning and 84.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:18:48,349 INFO L168 Benchmark]: Boogie Preprocessor took 25.09 ms. Allocated memory is still 119.5 MB. Free memory was 84.7 MB in the beginning and 83.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:18:48,349 INFO L168 Benchmark]: RCFGBuilder took 518.84 ms. Allocated memory is still 119.5 MB. Free memory was 83.3 MB in the beginning and 71.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:18:48,349 INFO L168 Benchmark]: TraceAbstraction took 5796.58 ms. Allocated memory was 119.5 MB in the beginning and 192.9 MB in the end (delta: 73.4 MB). Free memory was 70.7 MB in the beginning and 63.0 MB in the end (delta: 7.7 MB). Peak memory consumption was 82.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:18:48,350 INFO L168 Benchmark]: Witness Printer took 79.91 ms. Allocated memory is still 192.9 MB. Free memory was 63.0 MB in the beginning and 60.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:18:48,352 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 119.5 MB. Free memory is still 100.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 504.17 ms. Allocated memory is still 119.5 MB. Free memory was 81.5 MB in the beginning and 86.8 MB in the end (delta: -5.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.36 ms. Allocated memory is still 119.5 MB. Free memory was 86.3 MB in the beginning and 84.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.09 ms. Allocated memory is still 119.5 MB. Free memory was 84.7 MB in the beginning and 83.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 518.84 ms. Allocated memory is still 119.5 MB. Free memory was 83.3 MB in the beginning and 71.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5796.58 ms. Allocated memory was 119.5 MB in the beginning and 192.9 MB in the end (delta: 73.4 MB). Free memory was 70.7 MB in the beginning and 63.0 MB in the end (delta: 7.7 MB). Peak memory consumption was 82.5 MB. Max. memory is 16.1 GB. * Witness Printer took 79.91 ms. Allocated memory is still 192.9 MB. Free memory was 63.0 MB in the beginning and 60.9 MB in the end (delta: 2.1 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: 5.6s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, 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, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.2s 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, 0.2s SatisfiabilityAnalysisTime, 1.3s 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 23:18:48,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_843577d1-46aa-4b25-a6b1-619ff46f1637/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...