./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e06eb61-36a1-4e71-b802-03a6bb300319/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e06eb61-36a1-4e71-b802-03a6bb300319/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e06eb61-36a1-4e71-b802-03a6bb300319/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e06eb61-36a1-4e71-b802-03a6bb300319/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e06eb61-36a1-4e71-b802-03a6bb300319/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e06eb61-36a1-4e71-b802-03a6bb300319/bin/uautomizer-hJ6jxDFKc3 --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 7e0a192b08c42e34ffaa6d976bc077f299982e1d ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:11:57,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:11:57,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:11:57,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:11:57,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:11:57,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:11:57,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:11:57,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:11:57,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:11:58,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:11:58,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:11:58,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:11:58,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:11:58,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:11:58,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:11:58,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:11:58,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:11:58,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:11:58,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:11:58,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:11:58,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:11:58,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:11:58,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:11:58,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:11:58,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:11:58,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:11:58,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:11:58,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:11:58,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:11:58,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:11:58,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:11:58,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:11:58,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:11:58,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:11:58,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:11:58,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:11:58,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:11:58,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:11:58,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:11:58,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:11:58,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:11:58,050 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e06eb61-36a1-4e71-b802-03a6bb300319/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 20:11:58,081 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:11:58,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:11:58,082 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:11:58,082 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:11:58,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:11:58,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:11:58,085 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:11:58,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:11:58,085 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:11:58,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:11:58,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:11:58,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:11:58,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:11:58,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:11:58,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:11:58,087 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:11:58,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:11:58,088 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:11:58,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:11:58,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:11:58,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:11:58,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:11:58,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:11:58,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:11:58,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:11:58,090 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:11:58,090 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:11:58,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 20:11:58,091 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:11:58,091 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:11:58,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:11:58,092 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:11:58,092 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_1e06eb61-36a1-4e71-b802-03a6bb300319/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e06eb61-36a1-4e71-b802-03a6bb300319/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e0a192b08c42e34ffaa6d976bc077f299982e1d [2021-10-15 20:11:58,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:11:58,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:11:58,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:11:58,470 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:11:58,471 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:11:58,472 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e06eb61-36a1-4e71-b802-03a6bb300319/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-1.c [2021-10-15 20:11:58,543 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e06eb61-36a1-4e71-b802-03a6bb300319/bin/uautomizer-hJ6jxDFKc3/data/1782ecdee/881561b10fb8419ca500582ce1e72cb7/FLAG6e05788c3 [2021-10-15 20:11:59,177 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:11:59,178 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e06eb61-36a1-4e71-b802-03a6bb300319/sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-1.c [2021-10-15 20:11:59,193 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e06eb61-36a1-4e71-b802-03a6bb300319/bin/uautomizer-hJ6jxDFKc3/data/1782ecdee/881561b10fb8419ca500582ce1e72cb7/FLAG6e05788c3 [2021-10-15 20:11:59,483 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e06eb61-36a1-4e71-b802-03a6bb300319/bin/uautomizer-hJ6jxDFKc3/data/1782ecdee/881561b10fb8419ca500582ce1e72cb7 [2021-10-15 20:11:59,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:11:59,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:11:59,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:11:59,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:11:59,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:11:59,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:11:59" (1/1) ... [2021-10-15 20:11:59,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7db7d421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:59, skipping insertion in model container [2021-10-15 20:11:59,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:11:59" (1/1) ... [2021-10-15 20:11:59,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:11:59,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:11:59,848 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_1e06eb61-36a1-4e71-b802-03a6bb300319/sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-1.c[43309,43322] [2021-10-15 20:11:59,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:11:59,867 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:11:59,946 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_1e06eb61-36a1-4e71-b802-03a6bb300319/sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-1.c[43309,43322] [2021-10-15 20:11:59,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:11:59,967 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:11:59,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:59 WrapperNode [2021-10-15 20:11:59,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:11:59,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:11:59,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:11:59,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:11:59,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:59" (1/1) ... [2021-10-15 20:11:59,993 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:59" (1/1) ... [2021-10-15 20:12:00,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:12:00,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:12:00,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:12:00,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:12:00,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:59" (1/1) ... [2021-10-15 20:12:00,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:59" (1/1) ... [2021-10-15 20:12:00,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:59" (1/1) ... [2021-10-15 20:12:00,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:59" (1/1) ... [2021-10-15 20:12:00,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:59" (1/1) ... [2021-10-15 20:12:00,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:59" (1/1) ... [2021-10-15 20:12:00,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:59" (1/1) ... [2021-10-15 20:12:00,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:12:00,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:12:00,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:12:00,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:12:00,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:59" (1/1) ... [2021-10-15 20:12:00,160 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:12:00,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e06eb61-36a1-4e71-b802-03a6bb300319/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:12:00,197 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e06eb61-36a1-4e71-b802-03a6bb300319/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:12:00,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e06eb61-36a1-4e71-b802-03a6bb300319/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:12:00,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 20:12:00,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:12:00,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:12:00,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:12:00,427 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:12:00,991 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-15 20:12:00,991 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-15 20:12:01,003 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:12:01,005 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-15 20:12:01,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:12:01 BoogieIcfgContainer [2021-10-15 20:12:01,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:12:01,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:12:01,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:12:01,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:12:01,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:11:59" (1/3) ... [2021-10-15 20:12:01,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a935e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:12:01, skipping insertion in model container [2021-10-15 20:12:01,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:59" (2/3) ... [2021-10-15 20:12:01,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a935e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:12:01, skipping insertion in model container [2021-10-15 20:12:01,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:12:01" (3/3) ... [2021-10-15 20:12:01,027 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1.cil-1.c [2021-10-15 20:12:01,035 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:12:01,035 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 20:12:01,096 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:12:01,104 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, mConcurrency=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 [2021-10-15 20:12:01,105 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 20:12:01,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 143 places, 242 transitions, 484 flow [2021-10-15 20:12:01,195 INFO L129 PetriNetUnfolder]: 100/242 cut-off events. [2021-10-15 20:12:01,195 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:12:01,197 INFO L84 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 242 events. 100/242 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 451 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 0. Up to 25 conditions per place. [2021-10-15 20:12:01,198 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 242 transitions, 484 flow [2021-10-15 20:12:01,208 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 199 transitions, 398 flow [2021-10-15 20:12:01,235 INFO L129 PetriNetUnfolder]: 70/198 cut-off events. [2021-10-15 20:12:01,236 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:12:01,236 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:01,237 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] [2021-10-15 20:12:01,238 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:12:01,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:01,245 INFO L82 PathProgramCache]: Analyzing trace with hash -947483198, now seen corresponding path program 1 times [2021-10-15 20:12:01,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:01,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585029332] [2021-10-15 20:12:01,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:01,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:01,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:12:01,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:01,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585029332] [2021-10-15 20:12:01,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585029332] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:01,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:01,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:12:01,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670217839] [2021-10-15 20:12:01,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:12:01,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:01,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:12:01,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:12:01,780 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 242 [2021-10-15 20:12:01,785 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 199 transitions, 398 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 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) [2021-10-15 20:12:01,786 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:01,786 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 242 [2021-10-15 20:12:01,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:02,216 INFO L129 PetriNetUnfolder]: 108/285 cut-off events. [2021-10-15 20:12:02,217 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:12:02,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 285 events. 108/285 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 496 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 20. Up to 126 conditions per place. [2021-10-15 20:12:02,234 INFO L132 encePairwiseOnDemand]: 204/242 looper letters, 127 selfloop transitions, 37 changer transitions 0/268 dead transitions. [2021-10-15 20:12:02,234 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 268 transitions, 864 flow [2021-10-15 20:12:02,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:12:02,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:12:02,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 588 transitions. [2021-10-15 20:12:02,264 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8099173553719008 [2021-10-15 20:12:02,265 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 588 transitions. [2021-10-15 20:12:02,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 588 transitions. [2021-10-15 20:12:02,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:02,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 588 transitions. [2021-10-15 20:12:02,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 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) [2021-10-15 20:12:02,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:02,288 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:02,290 INFO L186 Difference]: Start difference. First operand has 130 places, 199 transitions, 398 flow. Second operand 3 states and 588 transitions. [2021-10-15 20:12:02,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 268 transitions, 864 flow [2021-10-15 20:12:02,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 268 transitions, 864 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:12:02,307 INFO L242 Difference]: Finished difference. Result has 134 places, 233 transitions, 684 flow [2021-10-15 20:12:02,310 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=684, PETRI_PLACES=134, PETRI_TRANSITIONS=233} [2021-10-15 20:12:02,311 INFO L334 CegarLoopForPetriNet]: 130 programPoint places, 4 predicate places. [2021-10-15 20:12:02,311 INFO L470 AbstractCegarLoop]: Abstraction has has 134 places, 233 transitions, 684 flow [2021-10-15 20:12:02,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 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) [2021-10-15 20:12:02,312 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:02,313 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] [2021-10-15 20:12:02,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 20:12:02,313 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:12:02,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:02,314 INFO L82 PathProgramCache]: Analyzing trace with hash 472840096, now seen corresponding path program 1 times [2021-10-15 20:12:02,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:02,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890076145] [2021-10-15 20:12:02,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:02,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:02,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:12:02,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:02,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890076145] [2021-10-15 20:12:02,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890076145] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:02,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:02,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:12:02,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323159476] [2021-10-15 20:12:02,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:12:02,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:02,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:12:02,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:12:02,450 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 242 [2021-10-15 20:12:02,452 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 233 transitions, 684 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 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) [2021-10-15 20:12:02,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:02,452 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 242 [2021-10-15 20:12:02,452 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:02,798 INFO L129 PetriNetUnfolder]: 145/365 cut-off events. [2021-10-15 20:12:02,798 INFO L130 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2021-10-15 20:12:02,800 INFO L84 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 365 events. 145/365 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 637 event pairs, 0 based on Foata normal form. 1/321 useless extension candidates. Maximal degree in co-relation 304. Up to 195 conditions per place. [2021-10-15 20:12:02,806 INFO L132 encePairwiseOnDemand]: 205/242 looper letters, 160 selfloop transitions, 36 changer transitions 2/302 dead transitions. [2021-10-15 20:12:02,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 302 transitions, 1352 flow [2021-10-15 20:12:02,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:12:02,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:12:02,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 589 transitions. [2021-10-15 20:12:02,812 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8112947658402204 [2021-10-15 20:12:02,816 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 589 transitions. [2021-10-15 20:12:02,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 589 transitions. [2021-10-15 20:12:02,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:02,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 589 transitions. [2021-10-15 20:12:02,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 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) [2021-10-15 20:12:02,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:02,827 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:02,827 INFO L186 Difference]: Start difference. First operand has 134 places, 233 transitions, 684 flow. Second operand 3 states and 589 transitions. [2021-10-15 20:12:02,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 302 transitions, 1352 flow [2021-10-15 20:12:02,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 302 transitions, 1212 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:12:02,867 INFO L242 Difference]: Finished difference. Result has 136 places, 265 transitions, 950 flow [2021-10-15 20:12:02,867 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=950, PETRI_PLACES=136, PETRI_TRANSITIONS=265} [2021-10-15 20:12:02,868 INFO L334 CegarLoopForPetriNet]: 130 programPoint places, 6 predicate places. [2021-10-15 20:12:02,868 INFO L470 AbstractCegarLoop]: Abstraction has has 136 places, 265 transitions, 950 flow [2021-10-15 20:12:02,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 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) [2021-10-15 20:12:02,869 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:02,870 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:12:02,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 20:12:02,871 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:12:02,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:02,875 INFO L82 PathProgramCache]: Analyzing trace with hash 488183924, now seen corresponding path program 1 times [2021-10-15 20:12:02,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:02,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280717420] [2021-10-15 20:12:02,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:02,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:03,002 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:12:03,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:03,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280717420] [2021-10-15 20:12:03,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280717420] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:03,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:03,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:12:03,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276719642] [2021-10-15 20:12:03,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:12:03,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:03,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:12:03,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:12:03,012 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 242 [2021-10-15 20:12:03,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 265 transitions, 950 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 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) [2021-10-15 20:12:03,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:03,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 242 [2021-10-15 20:12:03,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:03,301 INFO L129 PetriNetUnfolder]: 169/420 cut-off events. [2021-10-15 20:12:03,301 INFO L130 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2021-10-15 20:12:03,302 INFO L84 FinitePrefix]: Finished finitePrefix Result has 932 conditions, 420 events. 169/420 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 773 event pairs, 0 based on Foata normal form. 2/372 useless extension candidates. Maximal degree in co-relation 653. Up to 221 conditions per place. [2021-10-15 20:12:03,306 INFO L132 encePairwiseOnDemand]: 214/242 looper letters, 157 selfloop transitions, 49 changer transitions 0/310 dead transitions. [2021-10-15 20:12:03,307 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 310 transitions, 1490 flow [2021-10-15 20:12:03,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:12:03,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:12:03,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 565 transitions. [2021-10-15 20:12:03,310 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.778236914600551 [2021-10-15 20:12:03,310 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 565 transitions. [2021-10-15 20:12:03,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 565 transitions. [2021-10-15 20:12:03,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:03,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 565 transitions. [2021-10-15 20:12:03,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:12:03,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:03,318 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:03,319 INFO L186 Difference]: Start difference. First operand has 136 places, 265 transitions, 950 flow. Second operand 3 states and 565 transitions. [2021-10-15 20:12:03,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 310 transitions, 1490 flow [2021-10-15 20:12:03,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 310 transitions, 1418 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:12:03,339 INFO L242 Difference]: Finished difference. Result has 138 places, 286 transitions, 1200 flow [2021-10-15 20:12:03,340 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1200, PETRI_PLACES=138, PETRI_TRANSITIONS=286} [2021-10-15 20:12:03,340 INFO L334 CegarLoopForPetriNet]: 130 programPoint places, 8 predicate places. [2021-10-15 20:12:03,340 INFO L470 AbstractCegarLoop]: Abstraction has has 138 places, 286 transitions, 1200 flow [2021-10-15 20:12:03,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 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) [2021-10-15 20:12:03,341 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:03,341 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:12:03,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 20:12:03,342 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:12:03,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:03,344 INFO L82 PathProgramCache]: Analyzing trace with hash 397904103, now seen corresponding path program 1 times [2021-10-15 20:12:03,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:03,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290166829] [2021-10-15 20:12:03,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:03,347 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:03,470 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:12:03,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:03,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290166829] [2021-10-15 20:12:03,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290166829] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:03,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:03,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:12:03,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514775115] [2021-10-15 20:12:03,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:12:03,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:03,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:12:03,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:12:03,477 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 242 [2021-10-15 20:12:03,478 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 286 transitions, 1200 flow. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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) [2021-10-15 20:12:03,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:03,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 242 [2021-10-15 20:12:03,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:03,757 INFO L129 PetriNetUnfolder]: 203/500 cut-off events. [2021-10-15 20:12:03,758 INFO L130 PetriNetUnfolder]: For 318/318 co-relation queries the response was YES. [2021-10-15 20:12:03,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1214 conditions, 500 events. 203/500 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1065 event pairs, 0 based on Foata normal form. 2/446 useless extension candidates. Maximal degree in co-relation 784. Up to 269 conditions per place. [2021-10-15 20:12:03,764 INFO L132 encePairwiseOnDemand]: 205/242 looper letters, 181 selfloop transitions, 65 changer transitions 0/350 dead transitions. [2021-10-15 20:12:03,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 350 transitions, 1924 flow [2021-10-15 20:12:03,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:12:03,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:12:03,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 584 transitions. [2021-10-15 20:12:03,768 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8044077134986226 [2021-10-15 20:12:03,768 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 584 transitions. [2021-10-15 20:12:03,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 584 transitions. [2021-10-15 20:12:03,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:03,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 584 transitions. [2021-10-15 20:12:03,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 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) [2021-10-15 20:12:03,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:03,777 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:03,777 INFO L186 Difference]: Start difference. First operand has 138 places, 286 transitions, 1200 flow. Second operand 3 states and 584 transitions. [2021-10-15 20:12:03,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 350 transitions, 1924 flow [2021-10-15 20:12:03,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 350 transitions, 1824 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:12:03,795 INFO L242 Difference]: Finished difference. Result has 140 places, 316 transitions, 1584 flow [2021-10-15 20:12:03,796 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=1096, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1584, PETRI_PLACES=140, PETRI_TRANSITIONS=316} [2021-10-15 20:12:03,796 INFO L334 CegarLoopForPetriNet]: 130 programPoint places, 10 predicate places. [2021-10-15 20:12:03,796 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 316 transitions, 1584 flow [2021-10-15 20:12:03,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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) [2021-10-15 20:12:03,798 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:03,798 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:12:03,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 20:12:03,799 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:12:03,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:03,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1358393014, now seen corresponding path program 1 times [2021-10-15 20:12:03,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:03,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551276700] [2021-10-15 20:12:03,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:03,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:03,849 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-15 20:12:03,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:03,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551276700] [2021-10-15 20:12:03,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551276700] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:03,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:03,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:12:03,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923185384] [2021-10-15 20:12:03,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:12:03,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:03,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:12:03,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:12:03,854 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 242 [2021-10-15 20:12:03,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 316 transitions, 1584 flow. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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) [2021-10-15 20:12:03,856 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:03,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 242 [2021-10-15 20:12:03,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:04,088 INFO L129 PetriNetUnfolder]: 210/524 cut-off events. [2021-10-15 20:12:04,088 INFO L130 PetriNetUnfolder]: For 615/615 co-relation queries the response was YES. [2021-10-15 20:12:04,090 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1374 conditions, 524 events. 210/524 cut-off events. For 615/615 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1188 event pairs, 0 based on Foata normal form. 4/469 useless extension candidates. Maximal degree in co-relation 906. Up to 332 conditions per place. [2021-10-15 20:12:04,094 INFO L132 encePairwiseOnDemand]: 231/242 looper letters, 209 selfloop transitions, 15 changer transitions 0/328 dead transitions. [2021-10-15 20:12:04,095 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 328 transitions, 2072 flow [2021-10-15 20:12:04,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:12:04,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:12:04,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 534 transitions. [2021-10-15 20:12:04,098 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7355371900826446 [2021-10-15 20:12:04,098 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 534 transitions. [2021-10-15 20:12:04,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 534 transitions. [2021-10-15 20:12:04,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:04,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 534 transitions. [2021-10-15 20:12:04,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 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) [2021-10-15 20:12:04,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:04,106 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:04,106 INFO L186 Difference]: Start difference. First operand has 140 places, 316 transitions, 1584 flow. Second operand 3 states and 534 transitions. [2021-10-15 20:12:04,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 328 transitions, 2072 flow [2021-10-15 20:12:04,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 328 transitions, 1944 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:12:04,124 INFO L242 Difference]: Finished difference. Result has 142 places, 320 transitions, 1556 flow [2021-10-15 20:12:04,125 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=1434, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1556, PETRI_PLACES=142, PETRI_TRANSITIONS=320} [2021-10-15 20:12:04,125 INFO L334 CegarLoopForPetriNet]: 130 programPoint places, 12 predicate places. [2021-10-15 20:12:04,126 INFO L470 AbstractCegarLoop]: Abstraction has has 142 places, 320 transitions, 1556 flow [2021-10-15 20:12:04,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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) [2021-10-15 20:12:04,127 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:04,127 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:12:04,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-15 20:12:04,128 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:12:04,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:04,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1536250843, now seen corresponding path program 1 times [2021-10-15 20:12:04,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:04,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111392567] [2021-10-15 20:12:04,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:04,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:04,184 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:12:04,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:04,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111392567] [2021-10-15 20:12:04,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111392567] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:04,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:04,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:12:04,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971904944] [2021-10-15 20:12:04,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:12:04,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:04,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:12:04,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:12:04,190 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 242 [2021-10-15 20:12:04,191 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 320 transitions, 1556 flow. Second operand has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 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) [2021-10-15 20:12:04,191 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:04,191 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 242 [2021-10-15 20:12:04,191 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:04,458 INFO L129 PetriNetUnfolder]: 208/522 cut-off events. [2021-10-15 20:12:04,458 INFO L130 PetriNetUnfolder]: For 529/529 co-relation queries the response was YES. [2021-10-15 20:12:04,459 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1346 conditions, 522 events. 208/522 cut-off events. For 529/529 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1109 event pairs, 0 based on Foata normal form. 2/466 useless extension candidates. Maximal degree in co-relation 924. Up to 314 conditions per place. [2021-10-15 20:12:04,464 INFO L132 encePairwiseOnDemand]: 206/242 looper letters, 213 selfloop transitions, 35 changer transitions 1/353 dead transitions. [2021-10-15 20:12:04,465 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 353 transitions, 2122 flow [2021-10-15 20:12:04,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:12:04,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:12:04,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 586 transitions. [2021-10-15 20:12:04,469 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8071625344352618 [2021-10-15 20:12:04,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 586 transitions. [2021-10-15 20:12:04,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 586 transitions. [2021-10-15 20:12:04,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:04,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 586 transitions. [2021-10-15 20:12:04,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 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) [2021-10-15 20:12:04,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:04,477 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:04,477 INFO L186 Difference]: Start difference. First operand has 142 places, 320 transitions, 1556 flow. Second operand 3 states and 586 transitions. [2021-10-15 20:12:04,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 353 transitions, 2122 flow [2021-10-15 20:12:04,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 353 transitions, 2090 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:12:04,496 INFO L242 Difference]: Finished difference. Result has 143 places, 319 transitions, 1625 flow [2021-10-15 20:12:04,497 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1625, PETRI_PLACES=143, PETRI_TRANSITIONS=319} [2021-10-15 20:12:04,497 INFO L334 CegarLoopForPetriNet]: 130 programPoint places, 13 predicate places. [2021-10-15 20:12:04,497 INFO L470 AbstractCegarLoop]: Abstraction has has 143 places, 319 transitions, 1625 flow [2021-10-15 20:12:04,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 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) [2021-10-15 20:12:04,500 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:04,500 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:12:04,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-15 20:12:04,501 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:12:04,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:04,502 INFO L82 PathProgramCache]: Analyzing trace with hash 564851953, now seen corresponding path program 1 times [2021-10-15 20:12:04,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:04,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792144238] [2021-10-15 20:12:04,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:04,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:04,574 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-15 20:12:04,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:04,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792144238] [2021-10-15 20:12:04,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792144238] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:04,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:04,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:12:04,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115417775] [2021-10-15 20:12:04,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:12:04,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:04,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:12:04,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:12:04,587 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 242 [2021-10-15 20:12:04,588 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 319 transitions, 1625 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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) [2021-10-15 20:12:04,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:04,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 242 [2021-10-15 20:12:04,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:04,805 INFO L129 PetriNetUnfolder]: 204/518 cut-off events. [2021-10-15 20:12:04,806 INFO L130 PetriNetUnfolder]: For 603/603 co-relation queries the response was YES. [2021-10-15 20:12:04,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1383 conditions, 518 events. 204/518 cut-off events. For 603/603 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1033 event pairs, 0 based on Foata normal form. 4/464 useless extension candidates. Maximal degree in co-relation 977. Up to 335 conditions per place. [2021-10-15 20:12:04,816 INFO L132 encePairwiseOnDemand]: 231/242 looper letters, 211 selfloop transitions, 10 changer transitions 0/325 dead transitions. [2021-10-15 20:12:04,817 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 325 transitions, 2061 flow [2021-10-15 20:12:04,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:12:04,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:12:04,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2021-10-15 20:12:04,821 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7382920110192838 [2021-10-15 20:12:04,821 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2021-10-15 20:12:04,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2021-10-15 20:12:04,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:04,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2021-10-15 20:12:04,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 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) [2021-10-15 20:12:04,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:04,828 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:04,828 INFO L186 Difference]: Start difference. First operand has 143 places, 319 transitions, 1625 flow. Second operand 3 states and 536 transitions. [2021-10-15 20:12:04,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 325 transitions, 2061 flow [2021-10-15 20:12:04,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 325 transitions, 2026 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:12:04,850 INFO L242 Difference]: Finished difference. Result has 145 places, 316 transitions, 1596 flow [2021-10-15 20:12:04,850 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1596, PETRI_PLACES=145, PETRI_TRANSITIONS=316} [2021-10-15 20:12:04,851 INFO L334 CegarLoopForPetriNet]: 130 programPoint places, 15 predicate places. [2021-10-15 20:12:04,851 INFO L470 AbstractCegarLoop]: Abstraction has has 145 places, 316 transitions, 1596 flow [2021-10-15 20:12:04,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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) [2021-10-15 20:12:04,852 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:04,852 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:12:04,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-15 20:12:04,853 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:12:04,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:04,854 INFO L82 PathProgramCache]: Analyzing trace with hash 19025617, now seen corresponding path program 1 times [2021-10-15 20:12:04,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:04,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252599842] [2021-10-15 20:12:04,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:04,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:04,927 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-10-15 20:12:04,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:04,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252599842] [2021-10-15 20:12:04,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252599842] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:04,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:04,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:12:04,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344430201] [2021-10-15 20:12:04,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:12:04,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:04,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:12:04,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:12:04,935 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 242 [2021-10-15 20:12:04,936 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 316 transitions, 1596 flow. Second operand has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 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) [2021-10-15 20:12:04,936 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:04,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 242 [2021-10-15 20:12:04,937 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:05,164 INFO L129 PetriNetUnfolder]: 201/524 cut-off events. [2021-10-15 20:12:05,165 INFO L130 PetriNetUnfolder]: For 648/648 co-relation queries the response was YES. [2021-10-15 20:12:05,166 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1360 conditions, 524 events. 201/524 cut-off events. For 648/648 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1053 event pairs, 0 based on Foata normal form. 6/470 useless extension candidates. Maximal degree in co-relation 887. Up to 337 conditions per place. [2021-10-15 20:12:05,171 INFO L132 encePairwiseOnDemand]: 236/242 looper letters, 207 selfloop transitions, 5 changer transitions 0/316 dead transitions. [2021-10-15 20:12:05,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 316 transitions, 1990 flow [2021-10-15 20:12:05,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:12:05,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:12:05,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 525 transitions. [2021-10-15 20:12:05,176 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7231404958677686 [2021-10-15 20:12:05,176 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 525 transitions. [2021-10-15 20:12:05,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 525 transitions. [2021-10-15 20:12:05,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:05,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 525 transitions. [2021-10-15 20:12:05,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 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) [2021-10-15 20:12:05,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:05,188 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:05,188 INFO L186 Difference]: Start difference. First operand has 145 places, 316 transitions, 1596 flow. Second operand 3 states and 525 transitions. [2021-10-15 20:12:05,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 316 transitions, 1990 flow [2021-10-15 20:12:05,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 316 transitions, 1980 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:12:05,208 INFO L242 Difference]: Finished difference. Result has 147 places, 313 transitions, 1569 flow [2021-10-15 20:12:05,209 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=1546, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1569, PETRI_PLACES=147, PETRI_TRANSITIONS=313} [2021-10-15 20:12:05,209 INFO L334 CegarLoopForPetriNet]: 130 programPoint places, 17 predicate places. [2021-10-15 20:12:05,209 INFO L470 AbstractCegarLoop]: Abstraction has has 147 places, 313 transitions, 1569 flow [2021-10-15 20:12:05,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 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) [2021-10-15 20:12:05,210 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:05,211 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:12:05,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-15 20:12:05,211 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:12:05,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:05,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1778247501, now seen corresponding path program 1 times [2021-10-15 20:12:05,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:05,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011670228] [2021-10-15 20:12:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:05,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:05,281 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-15 20:12:05,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:05,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011670228] [2021-10-15 20:12:05,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011670228] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:05,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:05,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:12:05,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346592688] [2021-10-15 20:12:05,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:12:05,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:05,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:12:05,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:12:05,288 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 242 [2021-10-15 20:12:05,289 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 313 transitions, 1569 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 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) [2021-10-15 20:12:05,289 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:05,289 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 242 [2021-10-15 20:12:05,290 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:05,529 INFO L129 PetriNetUnfolder]: 219/573 cut-off events. [2021-10-15 20:12:05,529 INFO L130 PetriNetUnfolder]: For 714/714 co-relation queries the response was YES. [2021-10-15 20:12:05,531 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1502 conditions, 573 events. 219/573 cut-off events. For 714/714 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1251 event pairs, 0 based on Foata normal form. 4/512 useless extension candidates. Maximal degree in co-relation 1027. Up to 329 conditions per place. [2021-10-15 20:12:05,537 INFO L132 encePairwiseOnDemand]: 215/242 looper letters, 205 selfloop transitions, 42 changer transitions 0/351 dead transitions. [2021-10-15 20:12:05,537 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 351 transitions, 2239 flow [2021-10-15 20:12:05,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:12:05,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:12:05,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 560 transitions. [2021-10-15 20:12:05,541 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7713498622589532 [2021-10-15 20:12:05,541 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 560 transitions. [2021-10-15 20:12:05,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 560 transitions. [2021-10-15 20:12:05,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:05,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 560 transitions. [2021-10-15 20:12:05,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 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) [2021-10-15 20:12:05,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:05,549 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:05,549 INFO L186 Difference]: Start difference. First operand has 147 places, 313 transitions, 1569 flow. Second operand 3 states and 560 transitions. [2021-10-15 20:12:05,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 351 transitions, 2239 flow [2021-10-15 20:12:05,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 351 transitions, 2234 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:12:05,572 INFO L242 Difference]: Finished difference. Result has 150 places, 328 transitions, 1892 flow [2021-10-15 20:12:05,573 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=1544, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1892, PETRI_PLACES=150, PETRI_TRANSITIONS=328} [2021-10-15 20:12:05,574 INFO L334 CegarLoopForPetriNet]: 130 programPoint places, 20 predicate places. [2021-10-15 20:12:05,574 INFO L470 AbstractCegarLoop]: Abstraction has has 150 places, 328 transitions, 1892 flow [2021-10-15 20:12:05,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 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) [2021-10-15 20:12:05,575 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:05,575 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:12:05,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-15 20:12:05,576 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:12:05,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:05,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1388103916, now seen corresponding path program 1 times [2021-10-15 20:12:05,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:05,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935566562] [2021-10-15 20:12:05,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:05,578 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:05,630 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-15 20:12:05,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:05,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935566562] [2021-10-15 20:12:05,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935566562] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:05,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:05,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:12:05,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715009610] [2021-10-15 20:12:05,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:12:05,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:05,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:12:05,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:12:05,640 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 242 [2021-10-15 20:12:05,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 328 transitions, 1892 flow. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 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) [2021-10-15 20:12:05,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:05,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 242 [2021-10-15 20:12:05,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:05,902 INFO L129 PetriNetUnfolder]: 215/569 cut-off events. [2021-10-15 20:12:05,903 INFO L130 PetriNetUnfolder]: For 1155/1155 co-relation queries the response was YES. [2021-10-15 20:12:05,904 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1590 conditions, 569 events. 215/569 cut-off events. For 1155/1155 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1226 event pairs, 0 based on Foata normal form. 4/508 useless extension candidates. Maximal degree in co-relation 1055. Up to 350 conditions per place. [2021-10-15 20:12:05,910 INFO L132 encePairwiseOnDemand]: 217/242 looper letters, 218 selfloop transitions, 24 changer transitions 0/346 dead transitions. [2021-10-15 20:12:05,910 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 346 transitions, 2398 flow [2021-10-15 20:12:05,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:12:05,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:12:05,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 562 transitions. [2021-10-15 20:12:05,914 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7741046831955923 [2021-10-15 20:12:05,914 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 562 transitions. [2021-10-15 20:12:05,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 562 transitions. [2021-10-15 20:12:05,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:05,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 562 transitions. [2021-10-15 20:12:05,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 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) [2021-10-15 20:12:05,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:05,924 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:05,924 INFO L186 Difference]: Start difference. First operand has 150 places, 328 transitions, 1892 flow. Second operand 3 states and 562 transitions. [2021-10-15 20:12:05,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 346 transitions, 2398 flow [2021-10-15 20:12:05,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 346 transitions, 2312 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:12:05,947 INFO L242 Difference]: Finished difference. Result has 151 places, 325 transitions, 1856 flow [2021-10-15 20:12:05,949 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=1780, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1856, PETRI_PLACES=151, PETRI_TRANSITIONS=325} [2021-10-15 20:12:05,949 INFO L334 CegarLoopForPetriNet]: 130 programPoint places, 21 predicate places. [2021-10-15 20:12:05,950 INFO L470 AbstractCegarLoop]: Abstraction has has 151 places, 325 transitions, 1856 flow [2021-10-15 20:12:05,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 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) [2021-10-15 20:12:05,950 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:05,951 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:12:05,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-15 20:12:05,951 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:12:05,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:05,953 INFO L82 PathProgramCache]: Analyzing trace with hash -916073731, now seen corresponding path program 1 times [2021-10-15 20:12:05,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:05,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959755906] [2021-10-15 20:12:05,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:05,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:06,027 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-15 20:12:06,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:06,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959755906] [2021-10-15 20:12:06,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959755906] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:06,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:06,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:12:06,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936401578] [2021-10-15 20:12:06,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:12:06,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:06,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:12:06,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:12:06,032 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 242 [2021-10-15 20:12:06,033 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 325 transitions, 1856 flow. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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) [2021-10-15 20:12:06,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:06,034 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 242 [2021-10-15 20:12:06,034 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:06,291 INFO L129 PetriNetUnfolder]: 235/624 cut-off events. [2021-10-15 20:12:06,291 INFO L130 PetriNetUnfolder]: For 1197/1197 co-relation queries the response was YES. [2021-10-15 20:12:06,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1744 conditions, 624 events. 235/624 cut-off events. For 1197/1197 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1462 event pairs, 0 based on Foata normal form. 5/557 useless extension candidates. Maximal degree in co-relation 1197. Up to 366 conditions per place. [2021-10-15 20:12:06,298 INFO L132 encePairwiseOnDemand]: 216/242 looper letters, 218 selfloop transitions, 39 changer transitions 0/361 dead transitions. [2021-10-15 20:12:06,299 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 361 transitions, 2556 flow [2021-10-15 20:12:06,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:12:06,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:12:06,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 559 transitions. [2021-10-15 20:12:06,303 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7699724517906336 [2021-10-15 20:12:06,303 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 559 transitions. [2021-10-15 20:12:06,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 559 transitions. [2021-10-15 20:12:06,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:06,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 559 transitions. [2021-10-15 20:12:06,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 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) [2021-10-15 20:12:06,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:06,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:06,310 INFO L186 Difference]: Start difference. First operand has 151 places, 325 transitions, 1856 flow. Second operand 3 states and 559 transitions. [2021-10-15 20:12:06,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 361 transitions, 2556 flow [2021-10-15 20:12:06,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 361 transitions, 2532 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:12:06,332 INFO L242 Difference]: Finished difference. Result has 154 places, 340 transitions, 2164 flow [2021-10-15 20:12:06,333 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=1802, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2164, PETRI_PLACES=154, PETRI_TRANSITIONS=340} [2021-10-15 20:12:06,333 INFO L334 CegarLoopForPetriNet]: 130 programPoint places, 24 predicate places. [2021-10-15 20:12:06,334 INFO L470 AbstractCegarLoop]: Abstraction has has 154 places, 340 transitions, 2164 flow [2021-10-15 20:12:06,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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) [2021-10-15 20:12:06,334 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:06,335 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:12:06,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-15 20:12:06,335 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:12:06,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:06,336 INFO L82 PathProgramCache]: Analyzing trace with hash 62624868, now seen corresponding path program 1 times [2021-10-15 20:12:06,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:06,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923631936] [2021-10-15 20:12:06,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:06,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:06,374 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-15 20:12:06,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:06,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923631936] [2021-10-15 20:12:06,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923631936] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:06,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:06,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:12:06,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086084345] [2021-10-15 20:12:06,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:12:06,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:06,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:12:06,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:12:06,379 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 242 [2021-10-15 20:12:06,379 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 340 transitions, 2164 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 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) [2021-10-15 20:12:06,380 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:06,380 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 242 [2021-10-15 20:12:06,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:06,643 INFO L129 PetriNetUnfolder]: 230/619 cut-off events. [2021-10-15 20:12:06,643 INFO L130 PetriNetUnfolder]: For 1715/1715 co-relation queries the response was YES. [2021-10-15 20:12:06,645 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1802 conditions, 619 events. 230/619 cut-off events. For 1715/1715 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1190 event pairs, 0 based on Foata normal form. 5/552 useless extension candidates. Maximal degree in co-relation 1198. Up to 382 conditions per place. [2021-10-15 20:12:06,651 INFO L132 encePairwiseOnDemand]: 216/242 looper letters, 226 selfloop transitions, 25 changer transitions 0/355 dead transitions. [2021-10-15 20:12:06,651 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 355 transitions, 2672 flow [2021-10-15 20:12:06,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:12:06,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:12:06,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 561 transitions. [2021-10-15 20:12:06,655 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2021-10-15 20:12:06,655 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 561 transitions. [2021-10-15 20:12:06,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 561 transitions. [2021-10-15 20:12:06,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:06,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 561 transitions. [2021-10-15 20:12:06,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 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) [2021-10-15 20:12:06,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:06,661 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:06,662 INFO L186 Difference]: Start difference. First operand has 154 places, 340 transitions, 2164 flow. Second operand 3 states and 561 transitions. [2021-10-15 20:12:06,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 355 transitions, 2672 flow [2021-10-15 20:12:06,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 355 transitions, 2592 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:12:06,692 INFO L242 Difference]: Finished difference. Result has 155 places, 336 transitions, 2125 flow [2021-10-15 20:12:06,693 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=2046, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2125, PETRI_PLACES=155, PETRI_TRANSITIONS=336} [2021-10-15 20:12:06,693 INFO L334 CegarLoopForPetriNet]: 130 programPoint places, 25 predicate places. [2021-10-15 20:12:06,693 INFO L470 AbstractCegarLoop]: Abstraction has has 155 places, 336 transitions, 2125 flow [2021-10-15 20:12:06,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 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) [2021-10-15 20:12:06,694 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:06,694 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:12:06,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-15 20:12:06,695 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:12:06,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:06,695 INFO L82 PathProgramCache]: Analyzing trace with hash -2142948993, now seen corresponding path program 1 times [2021-10-15 20:12:06,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:06,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931942465] [2021-10-15 20:12:06,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:06,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:06,738 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-15 20:12:06,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:06,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931942465] [2021-10-15 20:12:06,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931942465] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:06,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:06,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:12:06,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909797583] [2021-10-15 20:12:06,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:12:06,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:06,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:12:06,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:12:06,743 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 242 [2021-10-15 20:12:06,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 336 transitions, 2125 flow. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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) [2021-10-15 20:12:06,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:06,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 242 [2021-10-15 20:12:06,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:06,996 INFO L129 PetriNetUnfolder]: 240/654 cut-off events. [2021-10-15 20:12:06,996 INFO L130 PetriNetUnfolder]: For 1751/1751 co-relation queries the response was YES. [2021-10-15 20:12:06,998 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1903 conditions, 654 events. 240/654 cut-off events. For 1751/1751 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1359 event pairs, 0 based on Foata normal form. 6/582 useless extension candidates. Maximal degree in co-relation 1296. Up to 393 conditions per place. [2021-10-15 20:12:07,004 INFO L132 encePairwiseOnDemand]: 224/242 looper letters, 228 selfloop transitions, 25 changer transitions 0/357 dead transitions. [2021-10-15 20:12:07,005 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 357 transitions, 2739 flow [2021-10-15 20:12:07,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:12:07,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:12:07,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 545 transitions. [2021-10-15 20:12:07,009 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7506887052341598 [2021-10-15 20:12:07,009 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 545 transitions. [2021-10-15 20:12:07,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 545 transitions. [2021-10-15 20:12:07,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:07,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 545 transitions. [2021-10-15 20:12:07,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 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) [2021-10-15 20:12:07,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:07,016 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:07,016 INFO L186 Difference]: Start difference. First operand has 155 places, 336 transitions, 2125 flow. Second operand 3 states and 545 transitions. [2021-10-15 20:12:07,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 357 transitions, 2739 flow [2021-10-15 20:12:07,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 357 transitions, 2714 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:12:07,039 INFO L242 Difference]: Finished difference. Result has 158 places, 342 transitions, 2294 flow [2021-10-15 20:12:07,040 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=2058, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2294, PETRI_PLACES=158, PETRI_TRANSITIONS=342} [2021-10-15 20:12:07,040 INFO L334 CegarLoopForPetriNet]: 130 programPoint places, 28 predicate places. [2021-10-15 20:12:07,040 INFO L470 AbstractCegarLoop]: Abstraction has has 158 places, 342 transitions, 2294 flow [2021-10-15 20:12:07,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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) [2021-10-15 20:12:07,041 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:07,041 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:12:07,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-15 20:12:07,042 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:12:07,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:07,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1081843078, now seen corresponding path program 1 times [2021-10-15 20:12:07,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:07,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912694026] [2021-10-15 20:12:07,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:07,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:07,090 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-15 20:12:07,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:07,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912694026] [2021-10-15 20:12:07,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912694026] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:07,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:07,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:12:07,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383721151] [2021-10-15 20:12:07,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:12:07,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:07,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:12:07,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:12:07,095 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 242 [2021-10-15 20:12:07,096 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 342 transitions, 2294 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 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) [2021-10-15 20:12:07,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:07,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 242 [2021-10-15 20:12:07,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:07,343 INFO L129 PetriNetUnfolder]: 234/648 cut-off events. [2021-10-15 20:12:07,343 INFO L130 PetriNetUnfolder]: For 2152/2152 co-relation queries the response was YES. [2021-10-15 20:12:07,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1917 conditions, 648 events. 234/648 cut-off events. For 2152/2152 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1276 event pairs, 0 based on Foata normal form. 6/576 useless extension candidates. Maximal degree in co-relation 1267. Up to 402 conditions per place. [2021-10-15 20:12:07,352 INFO L132 encePairwiseOnDemand]: 224/242 looper letters, 229 selfloop transitions, 17 changer transitions 0/350 dead transitions. [2021-10-15 20:12:07,352 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 350 transitions, 2766 flow [2021-10-15 20:12:07,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:12:07,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:12:07,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 547 transitions. [2021-10-15 20:12:07,356 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7534435261707989 [2021-10-15 20:12:07,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 547 transitions. [2021-10-15 20:12:07,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 547 transitions. [2021-10-15 20:12:07,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:07,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 547 transitions. [2021-10-15 20:12:07,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 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) [2021-10-15 20:12:07,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:07,367 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:07,367 INFO L186 Difference]: Start difference. First operand has 158 places, 342 transitions, 2294 flow. Second operand 3 states and 547 transitions. [2021-10-15 20:12:07,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 350 transitions, 2766 flow [2021-10-15 20:12:07,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 350 transitions, 2714 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:12:07,397 INFO L242 Difference]: Finished difference. Result has 159 places, 337 transitions, 2245 flow [2021-10-15 20:12:07,398 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=2190, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2245, PETRI_PLACES=159, PETRI_TRANSITIONS=337} [2021-10-15 20:12:07,398 INFO L334 CegarLoopForPetriNet]: 130 programPoint places, 29 predicate places. [2021-10-15 20:12:07,398 INFO L470 AbstractCegarLoop]: Abstraction has has 159 places, 337 transitions, 2245 flow [2021-10-15 20:12:07,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 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) [2021-10-15 20:12:07,399 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:07,399 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:12:07,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-15 20:12:07,400 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:12:07,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:07,401 INFO L82 PathProgramCache]: Analyzing trace with hash -24010087, now seen corresponding path program 1 times [2021-10-15 20:12:07,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:07,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846406258] [2021-10-15 20:12:07,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:07,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:07,444 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-10-15 20:12:07,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:07,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846406258] [2021-10-15 20:12:07,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846406258] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:07,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:07,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:12:07,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713732882] [2021-10-15 20:12:07,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:12:07,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:07,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:12:07,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:12:07,449 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 242 [2021-10-15 20:12:07,450 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 337 transitions, 2245 flow. Second operand has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 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) [2021-10-15 20:12:07,451 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:07,451 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 242 [2021-10-15 20:12:07,451 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:07,654 INFO L129 PetriNetUnfolder]: 441/1236 cut-off events. [2021-10-15 20:12:07,654 INFO L130 PetriNetUnfolder]: For 3784/3784 co-relation queries the response was YES. [2021-10-15 20:12:07,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2899 conditions, 1236 events. 441/1236 cut-off events. For 3784/3784 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 3920 event pairs, 0 based on Foata normal form. 0/1097 useless extension candidates. Maximal degree in co-relation 1825. Up to 292 conditions per place. [2021-10-15 20:12:07,667 INFO L132 encePairwiseOnDemand]: 234/242 looper letters, 17 selfloop transitions, 2 changer transitions 0/343 dead transitions. [2021-10-15 20:12:07,667 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 343 transitions, 2295 flow [2021-10-15 20:12:07,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:12:07,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:12:07,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 703 transitions. [2021-10-15 20:12:07,671 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9683195592286501 [2021-10-15 20:12:07,672 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 703 transitions. [2021-10-15 20:12:07,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 703 transitions. [2021-10-15 20:12:07,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:07,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 703 transitions. [2021-10-15 20:12:07,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 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) [2021-10-15 20:12:07,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:07,680 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:07,680 INFO L186 Difference]: Start difference. First operand has 159 places, 337 transitions, 2245 flow. Second operand 3 states and 703 transitions. [2021-10-15 20:12:07,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 343 transitions, 2295 flow [2021-10-15 20:12:07,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 343 transitions, 2278 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:12:07,704 INFO L242 Difference]: Finished difference. Result has 161 places, 338 transitions, 2250 flow [2021-10-15 20:12:07,705 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=2228, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2250, PETRI_PLACES=161, PETRI_TRANSITIONS=338} [2021-10-15 20:12:07,706 INFO L334 CegarLoopForPetriNet]: 130 programPoint places, 31 predicate places. [2021-10-15 20:12:07,706 INFO L470 AbstractCegarLoop]: Abstraction has has 161 places, 338 transitions, 2250 flow [2021-10-15 20:12:07,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 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) [2021-10-15 20:12:07,707 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:07,707 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:12:07,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-15 20:12:07,708 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:12:07,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:07,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1413304101, now seen corresponding path program 1 times [2021-10-15 20:12:07,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:07,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257674680] [2021-10-15 20:12:07,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:07,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:12:07,766 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-15 20:12:07,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:12:07,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257674680] [2021-10-15 20:12:07,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257674680] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:12:07,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:12:07,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:12:07,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602224668] [2021-10-15 20:12:07,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:12:07,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:12:07,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:12:07,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:12:07,775 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 242 [2021-10-15 20:12:07,777 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 338 transitions, 2250 flow. Second operand has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 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) [2021-10-15 20:12:07,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:12:07,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 242 [2021-10-15 20:12:07,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:12:08,039 INFO L129 PetriNetUnfolder]: 660/1852 cut-off events. [2021-10-15 20:12:08,039 INFO L130 PetriNetUnfolder]: For 5707/5707 co-relation queries the response was YES. [2021-10-15 20:12:08,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4322 conditions, 1852 events. 660/1852 cut-off events. For 5707/5707 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 6966 event pairs, 0 based on Foata normal form. 9/1666 useless extension candidates. Maximal degree in co-relation 2922. Up to 442 conditions per place. [2021-10-15 20:12:08,060 INFO L132 encePairwiseOnDemand]: 235/242 looper letters, 17 selfloop transitions, 3 changer transitions 0/344 dead transitions. [2021-10-15 20:12:08,060 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 344 transitions, 2306 flow [2021-10-15 20:12:08,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:12:08,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:12:08,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 703 transitions. [2021-10-15 20:12:08,064 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9683195592286501 [2021-10-15 20:12:08,064 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 703 transitions. [2021-10-15 20:12:08,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 703 transitions. [2021-10-15 20:12:08,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:12:08,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 703 transitions. [2021-10-15 20:12:08,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 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) [2021-10-15 20:12:08,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:08,072 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2021-10-15 20:12:08,073 INFO L186 Difference]: Start difference. First operand has 161 places, 338 transitions, 2250 flow. Second operand 3 states and 703 transitions. [2021-10-15 20:12:08,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 344 transitions, 2306 flow [2021-10-15 20:12:08,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 344 transitions, 2304 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:12:08,099 INFO L242 Difference]: Finished difference. Result has 163 places, 339 transitions, 2273 flow [2021-10-15 20:12:08,100 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=2248, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2273, PETRI_PLACES=163, PETRI_TRANSITIONS=339} [2021-10-15 20:12:08,100 INFO L334 CegarLoopForPetriNet]: 130 programPoint places, 33 predicate places. [2021-10-15 20:12:08,100 INFO L470 AbstractCegarLoop]: Abstraction has has 163 places, 339 transitions, 2273 flow [2021-10-15 20:12:08,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 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) [2021-10-15 20:12:08,101 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:12:08,101 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:12:08,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-15 20:12:08,102 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:12:08,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:12:08,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1005180377, now seen corresponding path program 1 times [2021-10-15 20:12:08,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:12:08,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337306077] [2021-10-15 20:12:08,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:12:08,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:12:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:12:08,143 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:12:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:12:08,256 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:12:08,257 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 20:12:08,258 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:12:08,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-15 20:12:08,267 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:12:08,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:12:08 BoogieIcfgContainer [2021-10-15 20:12:08,422 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:12:08,423 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:12:08,423 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:12:08,423 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:12:08,424 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:12:01" (3/4) ... [2021-10-15 20:12:08,433 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-15 20:12:08,569 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e06eb61-36a1-4e71-b802-03a6bb300319/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 20:12:08,569 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:12:08,572 INFO L168 Benchmark]: Toolchain (without parser) took 9080.83 ms. Allocated memory was 90.2 MB in the beginning and 195.0 MB in the end (delta: 104.9 MB). Free memory was 49.3 MB in the beginning and 151.8 MB in the end (delta: -102.6 MB). Peak memory consumption was 99.6 MB. Max. memory is 16.1 GB. [2021-10-15 20:12:08,572 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory was 66.3 MB in the beginning and 66.3 MB in the end (delta: 2.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:12:08,573 INFO L168 Benchmark]: CACSL2BoogieTranslator took 475.73 ms. Allocated memory was 90.2 MB in the beginning and 134.2 MB in the end (delta: 44.0 MB). Free memory was 49.1 MB in the beginning and 100.0 MB in the end (delta: -50.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 20:12:08,574 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.29 ms. Allocated memory is still 134.2 MB. Free memory was 100.0 MB in the beginning and 97.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 20:12:08,574 INFO L168 Benchmark]: Boogie Preprocessor took 89.24 ms. Allocated memory is still 134.2 MB. Free memory was 97.0 MB in the beginning and 94.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:12:08,575 INFO L168 Benchmark]: RCFGBuilder took 863.19 ms. Allocated memory is still 134.2 MB. Free memory was 94.9 MB in the beginning and 66.4 MB in the end (delta: 28.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-15 20:12:08,575 INFO L168 Benchmark]: TraceAbstraction took 7408.36 ms. Allocated memory was 134.2 MB in the beginning and 195.0 MB in the end (delta: 60.8 MB). Free memory was 66.4 MB in the beginning and 54.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 74.3 MB. Max. memory is 16.1 GB. [2021-10-15 20:12:08,576 INFO L168 Benchmark]: Witness Printer took 146.83 ms. Allocated memory is still 195.0 MB. Free memory was 54.8 MB in the beginning and 151.8 MB in the end (delta: -97.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:12:08,578 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory was 66.3 MB in the beginning and 66.3 MB in the end (delta: 2.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 475.73 ms. Allocated memory was 90.2 MB in the beginning and 134.2 MB in the end (delta: 44.0 MB). Free memory was 49.1 MB in the beginning and 100.0 MB in the end (delta: -50.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.29 ms. Allocated memory is still 134.2 MB. Free memory was 100.0 MB in the beginning and 97.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 89.24 ms. Allocated memory is still 134.2 MB. Free memory was 97.0 MB in the beginning and 94.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 863.19 ms. Allocated memory is still 134.2 MB. Free memory was 94.9 MB in the beginning and 66.4 MB in the end (delta: 28.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7408.36 ms. Allocated memory was 134.2 MB in the beginning and 195.0 MB in the end (delta: 60.8 MB). Free memory was 66.4 MB in the beginning and 54.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 74.3 MB. Max. memory is 16.1 GB. * Witness Printer took 146.83 ms. Allocated memory is still 195.0 MB. Free memory was 54.8 MB in the beginning and 151.8 MB in the end (delta: -97.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 623]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L628] int s ; [L629] int tmp ; [L633] s = 8464 [L23] int s__info_callback = __VERIFIER_nondet_int() ; [L24] int s__in_handshake = __VERIFIER_nondet_int() ; [L25] int s__state ; [L26] int s__new_session ; [L27] int s__server ; [L28] int s__version = __VERIFIER_nondet_int() ; [L29] int s__type ; [L30] int s__init_num ; [L31] int s__hit = __VERIFIER_nondet_int() ; [L32] int s__rwstate ; [L33] int s__init_buf___0 = 1; [L34] int s__debug = __VERIFIER_nondet_int() ; [L35] int s__shutdown ; [L36] int s__cert = __VERIFIER_nondet_int() ; [L37] int s__options = __VERIFIER_nondet_int() ; [L38] int s__verify_mode = __VERIFIER_nondet_int() ; [L39] int s__session__peer = __VERIFIER_nondet_int() ; [L40] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L41] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L42] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L43] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L44] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L45] int s__s3__tmp__cert_request ; [L46] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L47] int s__s3__tmp__use_rsa_tmp ; [L48] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L49] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L50] int s__s3__tmp__next_state___0 ; [L51] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int() ; [L52] int s__session__cipher ; [L53] int buf = __VERIFIER_nondet_int() ; [L54] unsigned long l ; [L55] unsigned long Time ; [L56] unsigned long tmp = __VERIFIER_nondet_long() ; [L57] int cb ; [L58] long num1 ; [L59] int ret ; [L60] int new_state ; [L61] int state ; [L62] int skip ; [L63] int got_new_session ; [L64] int tmp___1 = __VERIFIER_nondet_int() ; [L65] int tmp___2 = __VERIFIER_nondet_int() ; [L66] int tmp___3 ; [L67] int tmp___4 ; [L68] int tmp___5 ; [L69] int tmp___6 ; [L70] int tmp___7 ; [L71] long tmp___8 = __VERIFIER_nondet_long() ; [L72] int tmp___9 ; [L73] int tmp___10 ; [L74] int blastFlag ; [L75] int __cil_tmp55 ; [L76] unsigned long __cil_tmp56 ; [L77] unsigned long __cil_tmp57 ; [L78] unsigned long __cil_tmp58 ; [L79] unsigned long __cil_tmp59 ; [L80] int __cil_tmp60 ; [L81] unsigned long __cil_tmp61 ; [L85] s__state = initial_state [L86] blastFlag = 0 [L87] Time = tmp [L88] cb = 0 [L89] ret = -1 [L90] skip = 0 [L91] got_new_session = 0 [L92] COND TRUE s__info_callback != 0 [L93] cb = s__info_callback [L99] s__in_handshake ++ [L100] COND FALSE !(tmp___1 + 12288) [L105] COND FALSE !(s__cert == 0) [L109] COND TRUE 1 [L111] state = s__state [L112] COND FALSE !(s__state == 12292) [L115] COND FALSE !(s__state == 16384) [L118] COND FALSE !(s__state == 8192) [L121] COND FALSE !(s__state == 24576) [L124] COND FALSE !(s__state == 8195) [L127] COND FALSE !(s__state == 8480) [L130] COND FALSE !(s__state == 8481) [L133] COND FALSE !(s__state == 8482) [L136] COND TRUE s__state == 8464 [L280] s__shutdown = 0 [L281] ret = __VERIFIER_nondet_int() [L282] COND TRUE blastFlag == 0 [L283] blastFlag = 1 [L285] COND FALSE !(ret <= 0) [L288] got_new_session = 1 [L289] s__state = 8496 [L290] s__init_num = 0 [L595] COND FALSE !(! s__s3__tmp__reuse_message) [L612] skip = 0 [L109] COND TRUE 1 [L111] state = s__state [L112] COND FALSE !(s__state == 12292) [L115] COND FALSE !(s__state == 16384) [L118] COND FALSE !(s__state == 8192) [L121] COND FALSE !(s__state == 24576) [L124] COND FALSE !(s__state == 8195) [L127] COND FALSE !(s__state == 8480) [L130] COND FALSE !(s__state == 8481) [L133] COND FALSE !(s__state == 8482) [L136] COND FALSE !(s__state == 8464) [L139] COND FALSE !(s__state == 8465) [L142] COND FALSE !(s__state == 8466) [L145] COND TRUE s__state == 8496 [L294] ret = __VERIFIER_nondet_int() [L295] COND TRUE blastFlag == 1 [L296] blastFlag = 2 [L298] COND FALSE !(ret <= 0) [L301] COND TRUE \read(s__hit) [L302] s__state = 8656 [L306] s__init_num = 0 [L595] COND FALSE !(! s__s3__tmp__reuse_message) [L612] skip = 0 [L109] COND TRUE 1 [L111] state = s__state [L112] COND FALSE !(s__state == 12292) [L115] COND FALSE !(s__state == 16384) [L118] COND FALSE !(s__state == 8192) [L121] COND FALSE !(s__state == 24576) [L124] COND FALSE !(s__state == 8195) [L127] COND FALSE !(s__state == 8480) [L130] COND FALSE !(s__state == 8481) [L133] COND FALSE !(s__state == 8482) [L136] COND FALSE !(s__state == 8464) [L139] COND FALSE !(s__state == 8465) [L142] COND FALSE !(s__state == 8466) [L145] COND FALSE !(s__state == 8496) [L148] COND FALSE !(s__state == 8497) [L151] COND FALSE !(s__state == 8512) [L154] COND FALSE !(s__state == 8513) [L157] COND FALSE !(s__state == 8528) [L160] COND FALSE !(s__state == 8529) [L163] COND FALSE !(s__state == 8544) [L166] COND FALSE !(s__state == 8545) [L169] COND FALSE !(s__state == 8560) [L172] COND FALSE !(s__state == 8561) [L175] COND FALSE !(s__state == 8448) [L178] COND FALSE !(s__state == 8576) [L181] COND FALSE !(s__state == 8577) [L184] COND FALSE !(s__state == 8592) [L187] COND FALSE !(s__state == 8593) [L190] COND FALSE !(s__state == 8608) [L193] COND FALSE !(s__state == 8609) [L196] COND FALSE !(s__state == 8640) [L199] COND FALSE !(s__state == 8641) [L202] COND TRUE s__state == 8656 [L500] s__session__cipher = s__s3__tmp__new_cipher [L501] tmp___9 = __VERIFIER_nondet_int() [L502] COND FALSE !(! tmp___9) [L506] ret = __VERIFIER_nondet_int() [L507] COND TRUE blastFlag == 2 [L508] blastFlag = 3 [L510] COND FALSE !(ret <= 0) [L513] s__state = 8672 [L514] s__init_num = 0 [L515] tmp___10 = __VERIFIER_nondet_int() [L516] COND FALSE !(! tmp___10) [L595] COND FALSE !(! s__s3__tmp__reuse_message) [L612] skip = 0 [L109] COND TRUE 1 [L111] state = s__state [L112] COND FALSE !(s__state == 12292) [L115] COND FALSE !(s__state == 16384) [L118] COND FALSE !(s__state == 8192) [L121] COND FALSE !(s__state == 24576) [L124] COND FALSE !(s__state == 8195) [L127] COND FALSE !(s__state == 8480) [L130] COND FALSE !(s__state == 8481) [L133] COND FALSE !(s__state == 8482) [L136] COND FALSE !(s__state == 8464) [L139] COND FALSE !(s__state == 8465) [L142] COND FALSE !(s__state == 8466) [L145] COND FALSE !(s__state == 8496) [L148] COND FALSE !(s__state == 8497) [L151] COND FALSE !(s__state == 8512) [L154] COND FALSE !(s__state == 8513) [L157] COND FALSE !(s__state == 8528) [L160] COND FALSE !(s__state == 8529) [L163] COND FALSE !(s__state == 8544) [L166] COND FALSE !(s__state == 8545) [L169] COND FALSE !(s__state == 8560) [L172] COND FALSE !(s__state == 8561) [L175] COND FALSE !(s__state == 8448) [L178] COND FALSE !(s__state == 8576) [L181] COND FALSE !(s__state == 8577) [L184] COND FALSE !(s__state == 8592) [L187] COND FALSE !(s__state == 8593) [L190] COND FALSE !(s__state == 8608) [L193] COND FALSE !(s__state == 8609) [L196] COND FALSE !(s__state == 8640) [L199] COND FALSE !(s__state == 8641) [L202] COND FALSE !(s__state == 8656) [L205] COND FALSE !(s__state == 8657) [L208] COND TRUE s__state == 8672 [L523] ret = __VERIFIER_nondet_int() [L524] COND FALSE !(blastFlag == 4) [L527] COND TRUE blastFlag == 3 [L623] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 143 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 27.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7173.9ms, OverallIterations: 17, TraceHistogramMax: 4, EmptinessCheckTime: 0.0ms, AutomataDifference: 5163.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 103.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 380 SDtfs, 688 SDslu, 0 SDs, 0 SdLazy, 1355 SolverSat, 609 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1669.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2294occurred in iteration=13, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 78.1ms SsaConstructionTime, 304.2ms SatisfiabilityAnalysisTime, 1041.4ms InterpolantComputationTime, 1594 NumberOfCodeBlocks, 1594 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1456 ConstructedInterpolants, 0 QuantifiedInterpolants, 2587 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 836/836 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 RESULT: Ultimate proved your program to be incorrect! [2021-10-15 20:12:08,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e06eb61-36a1-4e71-b802-03a6bb300319/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...