./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e238688c32a94c22451a71c77f163ca59a96260cd367dee1f28ca81c0c74653b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:25:15,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:25:15,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:25:16,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:25:16,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:25:16,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:25:16,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:25:16,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:25:16,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:25:16,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:25:16,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:25:16,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:25:16,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:25:16,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:25:16,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:25:16,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:25:16,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:25:16,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:25:16,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:25:16,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:25:16,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:25:16,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:25:16,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:25:16,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:25:16,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:25:16,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:25:16,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:25:16,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:25:16,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:25:16,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:25:16,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:25:16,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:25:16,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:25:16,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:25:16,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:25:16,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:25:16,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:25:16,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:25:16,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:25:16,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:25:16,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:25:16,086 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:25:16,131 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:25:16,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:25:16,132 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:25:16,132 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:25:16,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:25:16,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:25:16,134 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:25:16,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:25:16,135 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:25:16,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:25:16,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:25:16,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:25:16,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:25:16,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:25:16,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:25:16,138 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:25:16,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:25:16,139 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:25:16,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:25:16,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:25:16,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:25:16,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:25:16,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:25:16,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:25:16,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:25:16,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:25:16,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:25:16,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:25:16,143 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:25:16,144 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:25:16,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:25:16,145 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:25:16,145 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_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e238688c32a94c22451a71c77f163ca59a96260cd367dee1f28ca81c0c74653b [2021-10-21 20:25:16,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:25:16,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:25:16,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:25:16,502 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:25:16,503 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:25:16,505 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2021-10-21 20:25:16,601 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/data/c46e9aa5a/4fed85ce089946aba8cf446fc3bbfc81/FLAG862401426 [2021-10-21 20:25:17,123 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:25:17,124 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2021-10-21 20:25:17,133 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/data/c46e9aa5a/4fed85ce089946aba8cf446fc3bbfc81/FLAG862401426 [2021-10-21 20:25:17,476 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/data/c46e9aa5a/4fed85ce089946aba8cf446fc3bbfc81 [2021-10-21 20:25:17,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:25:17,481 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:25:17,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:25:17,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:25:17,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:25:17,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:25:17" (1/1) ... [2021-10-21 20:25:17,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14145c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:17, skipping insertion in model container [2021-10-21 20:25:17,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:25:17" (1/1) ... [2021-10-21 20:25:17,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:25:17,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:25:17,772 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_f48c3686-5c51-43c7-9358-b5f86658c081/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c[2422,2435] [2021-10-21 20:25:17,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:25:17,787 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:25:17,814 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_f48c3686-5c51-43c7-9358-b5f86658c081/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c[2422,2435] [2021-10-21 20:25:17,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:25:17,832 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:25:17,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:17 WrapperNode [2021-10-21 20:25:17,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:25:17,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:25:17,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:25:17,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:25:17,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:17" (1/1) ... [2021-10-21 20:25:17,850 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:17" (1/1) ... [2021-10-21 20:25:17,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:25:17,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:25:17,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:25:17,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:25:17,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:17" (1/1) ... [2021-10-21 20:25:17,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:17" (1/1) ... [2021-10-21 20:25:17,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:17" (1/1) ... [2021-10-21 20:25:17,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:17" (1/1) ... [2021-10-21 20:25:17,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:17" (1/1) ... [2021-10-21 20:25:17,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:17" (1/1) ... [2021-10-21 20:25:17,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:17" (1/1) ... [2021-10-21 20:25:17,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:25:17,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:25:17,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:25:17,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:25:17,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:17" (1/1) ... [2021-10-21 20:25:17,918 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:25:17,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:17,961 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:25:17,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:25:18,005 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-21 20:25:18,005 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-21 20:25:18,005 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-21 20:25:18,006 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-21 20:25:18,006 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-21 20:25:18,006 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-21 20:25:18,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:25:18,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:25:18,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 20:25:18,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-21 20:25:18,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-21 20:25:18,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:25:18,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:25:18,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 20:25:18,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:25:18,009 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-21 20:25:18,531 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:25:18,531 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-21 20:25:18,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:25:18 BoogieIcfgContainer [2021-10-21 20:25:18,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:25:18,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:25:18,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:25:18,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:25:18,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:25:17" (1/3) ... [2021-10-21 20:25:18,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c8d35e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:25:18, skipping insertion in model container [2021-10-21 20:25:18,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:17" (2/3) ... [2021-10-21 20:25:18,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c8d35e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:25:18, skipping insertion in model container [2021-10-21 20:25:18,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:25:18" (3/3) ... [2021-10-21 20:25:18,544 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2021-10-21 20:25:18,550 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-21 20:25:18,550 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:25:18,550 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:25:18,551 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-21 20:25:18,586 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:25:18,586 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:25:18,586 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:25:18,586 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:25:18,587 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:25:18,587 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:25:18,588 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:25:18,588 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:25:18,589 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:25:18,589 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:25:18,589 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:25:18,589 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:25:18,590 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:25:18,591 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:25:18,591 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:25:18,591 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:25:18,595 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:25:18,595 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:25:18,605 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:25:18,605 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:25:18,614 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:25:18,615 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:25:18,615 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:25:18,615 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:25:18,640 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-21 20:25:18,705 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:25:18,725 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 20:25:18,739 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-21 20:25:18,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 95 transitions, 214 flow [2021-10-21 20:25:18,876 INFO L129 PetriNetUnfolder]: 7/92 cut-off events. [2021-10-21 20:25:18,877 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-21 20:25:18,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 92 events. 7/92 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2021-10-21 20:25:18,886 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 95 transitions, 214 flow [2021-10-21 20:25:18,896 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 82 transitions, 182 flow [2021-10-21 20:25:18,942 INFO L129 PetriNetUnfolder]: 7/81 cut-off events. [2021-10-21 20:25:18,942 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-21 20:25:18,943 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:25:18,944 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:18,944 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:25:18,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:18,955 INFO L82 PathProgramCache]: Analyzing trace with hash -140966516, now seen corresponding path program 1 times [2021-10-21 20:25:18,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:18,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808425262] [2021-10-21 20:25:18,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:18,971 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:19,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:19,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:19,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808425262] [2021-10-21 20:25:19,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808425262] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:25:19,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:25:19,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 20:25:19,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442672203] [2021-10-21 20:25:19,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:25:19,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:19,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:25:19,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:25:19,639 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 95 [2021-10-21 20:25:19,647 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 82 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 74.83333333333333) internal successors, (449), 6 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:19,648 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:25:19,649 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 95 [2021-10-21 20:25:19,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:25:20,005 INFO L129 PetriNetUnfolder]: 132/409 cut-off events. [2021-10-21 20:25:20,006 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-10-21 20:25:20,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 637 conditions, 409 events. 132/409 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1985 event pairs, 28 based on Foata normal form. 1/311 useless extension candidates. Maximal degree in co-relation 563. Up to 112 conditions per place. [2021-10-21 20:25:20,022 INFO L132 encePairwiseOnDemand]: 82/95 looper letters, 22 selfloop transitions, 10 changer transitions 7/100 dead transitions. [2021-10-21 20:25:20,022 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 100 transitions, 296 flow [2021-10-21 20:25:20,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:25:20,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-21 20:25:20,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 563 transitions. [2021-10-21 20:25:20,056 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8466165413533835 [2021-10-21 20:25:20,057 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 563 transitions. [2021-10-21 20:25:20,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 563 transitions. [2021-10-21 20:25:20,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:25:20,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 563 transitions. [2021-10-21 20:25:20,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 80.42857142857143) internal successors, (563), 7 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:20,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:20,091 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:20,093 INFO L186 Difference]: Start difference. First operand has 85 places, 82 transitions, 182 flow. Second operand 7 states and 563 transitions. [2021-10-21 20:25:20,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 100 transitions, 296 flow [2021-10-21 20:25:20,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 100 transitions, 284 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-10-21 20:25:20,107 INFO L242 Difference]: Finished difference. Result has 88 places, 83 transitions, 217 flow [2021-10-21 20:25:20,110 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=217, PETRI_PLACES=88, PETRI_TRANSITIONS=83} [2021-10-21 20:25:20,111 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 3 predicate places. [2021-10-21 20:25:20,112 INFO L470 AbstractCegarLoop]: Abstraction has has 88 places, 83 transitions, 217 flow [2021-10-21 20:25:20,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.83333333333333) internal successors, (449), 6 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:20,117 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:25:20,117 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:20,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:25:20,118 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:25:20,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:20,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1881234242, now seen corresponding path program 2 times [2021-10-21 20:25:20,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:20,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329022932] [2021-10-21 20:25:20,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:20,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:20,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:20,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:20,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329022932] [2021-10-21 20:25:20,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329022932] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:25:20,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:25:20,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:25:20,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588030616] [2021-10-21 20:25:20,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:25:20,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:20,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:25:20,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:25:20,420 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 95 [2021-10-21 20:25:20,421 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 83 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:20,421 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:25:20,421 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 95 [2021-10-21 20:25:20,421 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:25:20,544 INFO L129 PetriNetUnfolder]: 62/265 cut-off events. [2021-10-21 20:25:20,544 INFO L130 PetriNetUnfolder]: For 108/122 co-relation queries the response was YES. [2021-10-21 20:25:20,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 265 events. 62/265 cut-off events. For 108/122 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1125 event pairs, 6 based on Foata normal form. 14/248 useless extension candidates. Maximal degree in co-relation 343. Up to 46 conditions per place. [2021-10-21 20:25:20,548 INFO L132 encePairwiseOnDemand]: 87/95 looper letters, 7 selfloop transitions, 7 changer transitions 0/85 dead transitions. [2021-10-21 20:25:20,549 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 85 transitions, 249 flow [2021-10-21 20:25:20,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:25:20,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-21 20:25:20,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 410 transitions. [2021-10-21 20:25:20,553 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8631578947368421 [2021-10-21 20:25:20,553 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 410 transitions. [2021-10-21 20:25:20,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 410 transitions. [2021-10-21 20:25:20,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:25:20,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 410 transitions. [2021-10-21 20:25:20,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:20,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:20,559 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:20,559 INFO L186 Difference]: Start difference. First operand has 88 places, 83 transitions, 217 flow. Second operand 5 states and 410 transitions. [2021-10-21 20:25:20,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 85 transitions, 249 flow [2021-10-21 20:25:20,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 85 transitions, 245 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-21 20:25:20,567 INFO L242 Difference]: Finished difference. Result has 91 places, 85 transitions, 249 flow [2021-10-21 20:25:20,567 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=249, PETRI_PLACES=91, PETRI_TRANSITIONS=85} [2021-10-21 20:25:20,568 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 6 predicate places. [2021-10-21 20:25:20,568 INFO L470 AbstractCegarLoop]: Abstraction has has 91 places, 85 transitions, 249 flow [2021-10-21 20:25:20,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:20,569 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:25:20,570 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:20,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:25:20,571 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:25:20,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:20,572 INFO L82 PathProgramCache]: Analyzing trace with hash 471932028, now seen corresponding path program 1 times [2021-10-21 20:25:20,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:20,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884132133] [2021-10-21 20:25:20,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:20,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:20,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:20,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:20,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884132133] [2021-10-21 20:25:20,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884132133] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:25:20,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:25:20,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:25:20,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284390695] [2021-10-21 20:25:20,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:25:20,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:20,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:25:20,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:25:20,811 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 95 [2021-10-21 20:25:20,812 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 85 transitions, 249 flow. Second operand has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:20,812 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:25:20,812 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 95 [2021-10-21 20:25:20,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:25:20,945 INFO L129 PetriNetUnfolder]: 86/364 cut-off events. [2021-10-21 20:25:20,945 INFO L130 PetriNetUnfolder]: For 135/149 co-relation queries the response was YES. [2021-10-21 20:25:20,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 364 events. 86/364 cut-off events. For 135/149 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1856 event pairs, 17 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 594. Up to 77 conditions per place. [2021-10-21 20:25:20,951 INFO L132 encePairwiseOnDemand]: 89/95 looper letters, 6 selfloop transitions, 5 changer transitions 0/87 dead transitions. [2021-10-21 20:25:20,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 87 transitions, 275 flow [2021-10-21 20:25:20,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:25:20,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-21 20:25:20,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 417 transitions. [2021-10-21 20:25:20,953 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8778947368421053 [2021-10-21 20:25:20,954 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 417 transitions. [2021-10-21 20:25:20,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 417 transitions. [2021-10-21 20:25:20,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:25:20,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 417 transitions. [2021-10-21 20:25:20,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:20,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:20,959 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:20,959 INFO L186 Difference]: Start difference. First operand has 91 places, 85 transitions, 249 flow. Second operand 5 states and 417 transitions. [2021-10-21 20:25:20,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 87 transitions, 275 flow [2021-10-21 20:25:20,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 87 transitions, 266 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-21 20:25:20,965 INFO L242 Difference]: Finished difference. Result has 94 places, 87 transitions, 266 flow [2021-10-21 20:25:20,966 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=266, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2021-10-21 20:25:20,966 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 9 predicate places. [2021-10-21 20:25:20,966 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 266 flow [2021-10-21 20:25:20,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:20,967 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:25:20,967 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:20,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 20:25:20,968 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:25:20,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:20,968 INFO L82 PathProgramCache]: Analyzing trace with hash -748448590, now seen corresponding path program 1 times [2021-10-21 20:25:20,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:20,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046744807] [2021-10-21 20:25:20,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:20,969 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:21,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:21,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:21,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046744807] [2021-10-21 20:25:21,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046744807] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:25:21,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:25:21,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:25:21,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44870340] [2021-10-21 20:25:21,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:25:21,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:21,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:25:21,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:25:21,140 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 95 [2021-10-21 20:25:21,141 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 266 flow. Second operand has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:21,141 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:25:21,141 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 95 [2021-10-21 20:25:21,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:25:21,335 INFO L129 PetriNetUnfolder]: 109/475 cut-off events. [2021-10-21 20:25:21,335 INFO L130 PetriNetUnfolder]: For 153/161 co-relation queries the response was YES. [2021-10-21 20:25:21,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 943 conditions, 475 events. 109/475 cut-off events. For 153/161 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2784 event pairs, 31 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 831. Up to 104 conditions per place. [2021-10-21 20:25:21,345 INFO L132 encePairwiseOnDemand]: 89/95 looper letters, 6 selfloop transitions, 5 changer transitions 0/89 dead transitions. [2021-10-21 20:25:21,345 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 89 transitions, 292 flow [2021-10-21 20:25:21,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:25:21,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-21 20:25:21,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 417 transitions. [2021-10-21 20:25:21,349 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8778947368421053 [2021-10-21 20:25:21,350 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 417 transitions. [2021-10-21 20:25:21,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 417 transitions. [2021-10-21 20:25:21,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:25:21,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 417 transitions. [2021-10-21 20:25:21,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:21,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:21,357 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:21,357 INFO L186 Difference]: Start difference. First operand has 94 places, 87 transitions, 266 flow. Second operand 5 states and 417 transitions. [2021-10-21 20:25:21,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 89 transitions, 292 flow [2021-10-21 20:25:21,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 89 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-21 20:25:21,370 INFO L242 Difference]: Finished difference. Result has 98 places, 89 transitions, 288 flow [2021-10-21 20:25:21,370 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=288, PETRI_PLACES=98, PETRI_TRANSITIONS=89} [2021-10-21 20:25:21,370 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 13 predicate places. [2021-10-21 20:25:21,371 INFO L470 AbstractCegarLoop]: Abstraction has has 98 places, 89 transitions, 288 flow [2021-10-21 20:25:21,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:21,371 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:25:21,372 INFO L254 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:21,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 20:25:21,372 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:25:21,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:21,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1811959250, now seen corresponding path program 1 times [2021-10-21 20:25:21,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:21,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558656731] [2021-10-21 20:25:21,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:21,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:21,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:21,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:21,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558656731] [2021-10-21 20:25:21,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558656731] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:25:21,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19665093] [2021-10-21 20:25:21,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:21,590 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:21,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:21,592 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:25:21,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 20:25:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:21,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 20:25:21,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:22,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:22,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19665093] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:25:22,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:25:22,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 11 [2021-10-21 20:25:22,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935482104] [2021-10-21 20:25:22,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 20:25:22,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:22,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 20:25:22,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:25:22,294 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 95 [2021-10-21 20:25:22,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 89 transitions, 288 flow. Second operand has 11 states, 11 states have (on average 75.0909090909091) internal successors, (826), 11 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:22,295 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:25:22,295 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 95 [2021-10-21 20:25:22,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:25:22,766 INFO L129 PetriNetUnfolder]: 410/1128 cut-off events. [2021-10-21 20:25:22,766 INFO L130 PetriNetUnfolder]: For 832/1097 co-relation queries the response was YES. [2021-10-21 20:25:22,775 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2825 conditions, 1128 events. 410/1128 cut-off events. For 832/1097 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7592 event pairs, 15 based on Foata normal form. 33/1146 useless extension candidates. Maximal degree in co-relation 2701. Up to 251 conditions per place. [2021-10-21 20:25:22,780 INFO L132 encePairwiseOnDemand]: 83/95 looper letters, 22 selfloop transitions, 15 changer transitions 36/138 dead transitions. [2021-10-21 20:25:22,780 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 138 transitions, 621 flow [2021-10-21 20:25:22,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 20:25:22,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-21 20:25:22,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 940 transitions. [2021-10-21 20:25:22,785 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8245614035087719 [2021-10-21 20:25:22,785 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 940 transitions. [2021-10-21 20:25:22,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 940 transitions. [2021-10-21 20:25:22,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:25:22,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 940 transitions. [2021-10-21 20:25:22,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 78.33333333333333) internal successors, (940), 12 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:22,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 95.0) internal successors, (1235), 13 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:22,794 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 95.0) internal successors, (1235), 13 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:22,795 INFO L186 Difference]: Start difference. First operand has 98 places, 89 transitions, 288 flow. Second operand 12 states and 940 transitions. [2021-10-21 20:25:22,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 138 transitions, 621 flow [2021-10-21 20:25:22,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 138 transitions, 617 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-21 20:25:22,804 INFO L242 Difference]: Finished difference. Result has 114 places, 94 transitions, 370 flow [2021-10-21 20:25:22,805 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=370, PETRI_PLACES=114, PETRI_TRANSITIONS=94} [2021-10-21 20:25:22,805 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 29 predicate places. [2021-10-21 20:25:22,805 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 94 transitions, 370 flow [2021-10-21 20:25:22,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 75.0909090909091) internal successors, (826), 11 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:22,806 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:25:22,806 INFO L254 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:22,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:23,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:23,020 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:25:23,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:23,020 INFO L82 PathProgramCache]: Analyzing trace with hash 60403854, now seen corresponding path program 1 times [2021-10-21 20:25:23,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:23,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505091113] [2021-10-21 20:25:23,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:23,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:23,167 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:23,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:23,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505091113] [2021-10-21 20:25:23,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505091113] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:25:23,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:25:23,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:25:23,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553151443] [2021-10-21 20:25:23,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:25:23,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:23,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:25:23,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:25:23,172 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 95 [2021-10-21 20:25:23,173 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 94 transitions, 370 flow. Second operand has 7 states, 7 states have (on average 75.14285714285714) internal successors, (526), 7 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:23,174 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:25:23,174 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 95 [2021-10-21 20:25:23,174 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:25:23,547 INFO L129 PetriNetUnfolder]: 392/1062 cut-off events. [2021-10-21 20:25:23,548 INFO L130 PetriNetUnfolder]: For 3241/3441 co-relation queries the response was YES. [2021-10-21 20:25:23,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3652 conditions, 1062 events. 392/1062 cut-off events. For 3241/3441 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6671 event pairs, 25 based on Foata normal form. 39/1094 useless extension candidates. Maximal degree in co-relation 3517. Up to 291 conditions per place. [2021-10-21 20:25:23,568 INFO L132 encePairwiseOnDemand]: 84/95 looper letters, 31 selfloop transitions, 22 changer transitions 23/141 dead transitions. [2021-10-21 20:25:23,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 141 transitions, 839 flow [2021-10-21 20:25:23,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:25:23,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-21 20:25:23,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 712 transitions. [2021-10-21 20:25:23,573 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8327485380116959 [2021-10-21 20:25:23,573 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 712 transitions. [2021-10-21 20:25:23,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 712 transitions. [2021-10-21 20:25:23,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:25:23,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 712 transitions. [2021-10-21 20:25:23,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.11111111111111) internal successors, (712), 9 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:23,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 95.0) internal successors, (950), 10 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:23,582 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 95.0) internal successors, (950), 10 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:23,582 INFO L186 Difference]: Start difference. First operand has 114 places, 94 transitions, 370 flow. Second operand 9 states and 712 transitions. [2021-10-21 20:25:23,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 141 transitions, 839 flow [2021-10-21 20:25:23,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 141 transitions, 761 flow, removed 36 selfloop flow, removed 8 redundant places. [2021-10-21 20:25:23,596 INFO L242 Difference]: Finished difference. Result has 113 places, 108 transitions, 534 flow [2021-10-21 20:25:23,597 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=534, PETRI_PLACES=113, PETRI_TRANSITIONS=108} [2021-10-21 20:25:23,597 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 28 predicate places. [2021-10-21 20:25:23,597 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 108 transitions, 534 flow [2021-10-21 20:25:23,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.14285714285714) internal successors, (526), 7 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:23,598 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:25:23,598 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:23,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 20:25:23,599 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:25:23,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:23,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1100095708, now seen corresponding path program 2 times [2021-10-21 20:25:23,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:23,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393960733] [2021-10-21 20:25:23,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:23,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:23,687 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 20:25:23,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:23,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393960733] [2021-10-21 20:25:23,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393960733] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:25:23,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:25:23,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:25:23,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376114164] [2021-10-21 20:25:23,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:25:23,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:23,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:25:23,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:25:23,697 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 95 [2021-10-21 20:25:23,698 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 108 transitions, 534 flow. Second operand has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:23,698 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:25:23,698 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 95 [2021-10-21 20:25:23,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:25:23,965 INFO L129 PetriNetUnfolder]: 207/842 cut-off events. [2021-10-21 20:25:23,966 INFO L130 PetriNetUnfolder]: For 1952/2054 co-relation queries the response was YES. [2021-10-21 20:25:23,975 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2472 conditions, 842 events. 207/842 cut-off events. For 1952/2054 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5743 event pairs, 65 based on Foata normal form. 49/853 useless extension candidates. Maximal degree in co-relation 2308. Up to 172 conditions per place. [2021-10-21 20:25:23,984 INFO L132 encePairwiseOnDemand]: 90/95 looper letters, 6 selfloop transitions, 5 changer transitions 0/109 dead transitions. [2021-10-21 20:25:23,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 109 transitions, 557 flow [2021-10-21 20:25:23,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:25:23,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-21 20:25:23,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2021-10-21 20:25:23,987 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9263157894736842 [2021-10-21 20:25:23,987 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 352 transitions. [2021-10-21 20:25:23,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 352 transitions. [2021-10-21 20:25:23,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:25:23,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 352 transitions. [2021-10-21 20:25:23,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:23,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 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) [2021-10-21 20:25:23,993 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 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) [2021-10-21 20:25:23,994 INFO L186 Difference]: Start difference. First operand has 113 places, 108 transitions, 534 flow. Second operand 4 states and 352 transitions. [2021-10-21 20:25:23,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 109 transitions, 557 flow [2021-10-21 20:25:24,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 109 transitions, 541 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-10-21 20:25:24,009 INFO L242 Difference]: Finished difference. Result has 113 places, 108 transitions, 541 flow [2021-10-21 20:25:24,010 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=541, PETRI_PLACES=113, PETRI_TRANSITIONS=108} [2021-10-21 20:25:24,010 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 28 predicate places. [2021-10-21 20:25:24,010 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 108 transitions, 541 flow [2021-10-21 20:25:24,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:24,011 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:25:24,012 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:24,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 20:25:24,012 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:25:24,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:24,013 INFO L82 PathProgramCache]: Analyzing trace with hash 125988968, now seen corresponding path program 2 times [2021-10-21 20:25:24,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:24,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028673437] [2021-10-21 20:25:24,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:24,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:24,120 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 20:25:24,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:24,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028673437] [2021-10-21 20:25:24,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028673437] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:25:24,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:25:24,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:25:24,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928246848] [2021-10-21 20:25:24,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:25:24,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:24,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:25:24,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:25:24,126 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 95 [2021-10-21 20:25:24,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 108 transitions, 541 flow. Second operand has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:24,127 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:25:24,127 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 95 [2021-10-21 20:25:24,127 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:25:24,319 INFO L129 PetriNetUnfolder]: 164/727 cut-off events. [2021-10-21 20:25:24,319 INFO L130 PetriNetUnfolder]: For 1748/1844 co-relation queries the response was YES. [2021-10-21 20:25:24,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2193 conditions, 727 events. 164/727 cut-off events. For 1748/1844 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4796 event pairs, 76 based on Foata normal form. 34/731 useless extension candidates. Maximal degree in co-relation 2050. Up to 168 conditions per place. [2021-10-21 20:25:24,334 INFO L132 encePairwiseOnDemand]: 90/95 looper letters, 6 selfloop transitions, 5 changer transitions 0/111 dead transitions. [2021-10-21 20:25:24,335 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 111 transitions, 579 flow [2021-10-21 20:25:24,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:25:24,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-21 20:25:24,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2021-10-21 20:25:24,338 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9263157894736842 [2021-10-21 20:25:24,338 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 352 transitions. [2021-10-21 20:25:24,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 352 transitions. [2021-10-21 20:25:24,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:25:24,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 352 transitions. [2021-10-21 20:25:24,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:24,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 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) [2021-10-21 20:25:24,343 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 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) [2021-10-21 20:25:24,343 INFO L186 Difference]: Start difference. First operand has 113 places, 108 transitions, 541 flow. Second operand 4 states and 352 transitions. [2021-10-21 20:25:24,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 111 transitions, 579 flow [2021-10-21 20:25:24,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 111 transitions, 579 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-21 20:25:24,354 INFO L242 Difference]: Finished difference. Result has 119 places, 110 transitions, 579 flow [2021-10-21 20:25:24,354 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=579, PETRI_PLACES=119, PETRI_TRANSITIONS=110} [2021-10-21 20:25:24,354 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 34 predicate places. [2021-10-21 20:25:24,355 INFO L470 AbstractCegarLoop]: Abstraction has has 119 places, 110 transitions, 579 flow [2021-10-21 20:25:24,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:24,355 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:25:24,356 INFO L254 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:24,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 20:25:24,356 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:25:24,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:24,357 INFO L82 PathProgramCache]: Analyzing trace with hash -108861532, now seen corresponding path program 1 times [2021-10-21 20:25:24,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:24,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341159333] [2021-10-21 20:25:24,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:24,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:24,690 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:24,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:24,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341159333] [2021-10-21 20:25:24,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341159333] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:25:24,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124838785] [2021-10-21 20:25:24,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:24,691 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:24,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:24,696 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:25:24,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 20:25:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:24,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 20:25:24,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:25,239 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:25,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124838785] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:25:25,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:25:25,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-10-21 20:25:25,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33876432] [2021-10-21 20:25:25,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 20:25:25,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:25,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 20:25:25,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:25:25,245 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 95 [2021-10-21 20:25:25,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 110 transitions, 579 flow. Second operand has 13 states, 13 states have (on average 66.23076923076923) internal successors, (861), 13 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:25,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:25:25,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 95 [2021-10-21 20:25:25,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:25:26,945 INFO L129 PetriNetUnfolder]: 1725/3918 cut-off events. [2021-10-21 20:25:26,946 INFO L130 PetriNetUnfolder]: For 18058/19269 co-relation queries the response was YES. [2021-10-21 20:25:26,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16972 conditions, 3918 events. 1725/3918 cut-off events. For 18058/19269 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 30994 event pairs, 325 based on Foata normal form. 88/4000 useless extension candidates. Maximal degree in co-relation 16789. Up to 709 conditions per place. [2021-10-21 20:25:27,022 INFO L132 encePairwiseOnDemand]: 83/95 looper letters, 74 selfloop transitions, 43 changer transitions 76/244 dead transitions. [2021-10-21 20:25:27,022 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 244 transitions, 1995 flow [2021-10-21 20:25:27,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 20:25:27,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-21 20:25:27,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 943 transitions. [2021-10-21 20:25:27,026 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635627530364373 [2021-10-21 20:25:27,027 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 943 transitions. [2021-10-21 20:25:27,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 943 transitions. [2021-10-21 20:25:27,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:25:27,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 943 transitions. [2021-10-21 20:25:27,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.53846153846153) internal successors, (943), 13 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:27,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 95.0) internal successors, (1330), 14 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:27,036 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 95.0) internal successors, (1330), 14 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:27,036 INFO L186 Difference]: Start difference. First operand has 119 places, 110 transitions, 579 flow. Second operand 13 states and 943 transitions. [2021-10-21 20:25:27,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 244 transitions, 1995 flow [2021-10-21 20:25:27,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 244 transitions, 1995 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-21 20:25:27,068 INFO L242 Difference]: Finished difference. Result has 138 places, 125 transitions, 901 flow [2021-10-21 20:25:27,068 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=901, PETRI_PLACES=138, PETRI_TRANSITIONS=125} [2021-10-21 20:25:27,069 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 53 predicate places. [2021-10-21 20:25:27,069 INFO L470 AbstractCegarLoop]: Abstraction has has 138 places, 125 transitions, 901 flow [2021-10-21 20:25:27,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 66.23076923076923) internal successors, (861), 13 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:27,070 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:25:27,070 INFO L254 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:27,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:27,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:27,292 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:25:27,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:27,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1948812966, now seen corresponding path program 2 times [2021-10-21 20:25:27,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:27,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453822113] [2021-10-21 20:25:27,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:27,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:27,574 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:27,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:27,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453822113] [2021-10-21 20:25:27,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453822113] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:25:27,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503751829] [2021-10-21 20:25:27,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:25:27,575 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:27,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:27,580 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:25:27,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 20:25:27,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:25:27,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:25:27,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 20:25:27,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:28,132 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:28,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503751829] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:25:28,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:25:28,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-10-21 20:25:28,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660527261] [2021-10-21 20:25:28,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-21 20:25:28,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:28,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 20:25:28,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-10-21 20:25:28,140 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 95 [2021-10-21 20:25:28,142 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 125 transitions, 901 flow. Second operand has 14 states, 14 states have (on average 65.85714285714286) internal successors, (922), 14 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:28,142 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:25:28,142 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 95 [2021-10-21 20:25:28,142 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:25:29,353 INFO L129 PetriNetUnfolder]: 1037/2116 cut-off events. [2021-10-21 20:25:29,353 INFO L130 PetriNetUnfolder]: For 16421/17060 co-relation queries the response was YES. [2021-10-21 20:25:29,380 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11168 conditions, 2116 events. 1037/2116 cut-off events. For 16421/17060 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 12669 event pairs, 192 based on Foata normal form. 37/2147 useless extension candidates. Maximal degree in co-relation 11135. Up to 723 conditions per place. [2021-10-21 20:25:29,387 INFO L132 encePairwiseOnDemand]: 83/95 looper letters, 0 selfloop transitions, 0 changer transitions 203/203 dead transitions. [2021-10-21 20:25:29,387 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 203 transitions, 2086 flow [2021-10-21 20:25:29,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 20:25:29,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-21 20:25:29,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 978 transitions. [2021-10-21 20:25:29,393 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7353383458646616 [2021-10-21 20:25:29,393 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 978 transitions. [2021-10-21 20:25:29,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 978 transitions. [2021-10-21 20:25:29,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:25:29,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 978 transitions. [2021-10-21 20:25:29,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 69.85714285714286) internal successors, (978), 14 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:29,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 95.0) internal successors, (1425), 15 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:29,407 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 95.0) internal successors, (1425), 15 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:29,408 INFO L186 Difference]: Start difference. First operand has 138 places, 125 transitions, 901 flow. Second operand 14 states and 978 transitions. [2021-10-21 20:25:29,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 203 transitions, 2086 flow [2021-10-21 20:25:29,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 203 transitions, 1873 flow, removed 89 selfloop flow, removed 11 redundant places. [2021-10-21 20:25:29,449 INFO L242 Difference]: Finished difference. Result has 120 places, 0 transitions, 0 flow [2021-10-21 20:25:29,451 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=120, PETRI_TRANSITIONS=0} [2021-10-21 20:25:29,451 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 35 predicate places. [2021-10-21 20:25:29,451 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 0 transitions, 0 flow [2021-10-21 20:25:29,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 65.85714285714286) internal successors, (922), 14 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:29,455 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:25:29,456 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-21 20:25:29,456 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-21 20:25:29,456 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-21 20:25:29,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:29,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:29,692 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-21 20:25:29,692 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:25:29,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:25:29 BasicIcfg [2021-10-21 20:25:29,694 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:25:29,695 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:25:29,695 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:25:29,696 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:25:29,696 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:25:18" (3/4) ... [2021-10-21 20:25:29,699 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:25:29,705 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-21 20:25:29,706 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-21 20:25:29,706 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-21 20:25:29,711 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-21 20:25:29,711 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 20:25:29,711 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:25:29,712 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:25:29,749 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:25:29,750 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:25:29,751 INFO L168 Benchmark]: Toolchain (without parser) took 12269.57 ms. Allocated memory was 109.1 MB in the beginning and 312.5 MB in the end (delta: 203.4 MB). Free memory was 76.8 MB in the beginning and 155.7 MB in the end (delta: -78.9 MB). Peak memory consumption was 124.8 MB. Max. memory is 16.1 GB. [2021-10-21 20:25:29,752 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 109.1 MB. Free memory is still 65.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:25:29,753 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.98 ms. Allocated memory is still 109.1 MB. Free memory was 76.6 MB in the beginning and 84.3 MB in the end (delta: -7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:25:29,753 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.60 ms. Allocated memory is still 109.1 MB. Free memory was 84.3 MB in the beginning and 82.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:25:29,754 INFO L168 Benchmark]: Boogie Preprocessor took 32.15 ms. Allocated memory is still 109.1 MB. Free memory was 82.5 MB in the beginning and 81.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:25:29,754 INFO L168 Benchmark]: RCFGBuilder took 627.40 ms. Allocated memory is still 109.1 MB. Free memory was 81.3 MB in the beginning and 68.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:25:29,755 INFO L168 Benchmark]: TraceAbstraction took 11158.28 ms. Allocated memory was 109.1 MB in the beginning and 312.5 MB in the end (delta: 203.4 MB). Free memory was 67.8 MB in the beginning and 158.3 MB in the end (delta: -90.5 MB). Peak memory consumption was 115.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:25:29,755 INFO L168 Benchmark]: Witness Printer took 54.62 ms. Allocated memory is still 312.5 MB. Free memory was 158.3 MB in the beginning and 155.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:25:29,758 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 109.1 MB. Free memory is still 65.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 349.98 ms. Allocated memory is still 109.1 MB. Free memory was 76.6 MB in the beginning and 84.3 MB in the end (delta: -7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.60 ms. Allocated memory is still 109.1 MB. Free memory was 84.3 MB in the beginning and 82.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.15 ms. Allocated memory is still 109.1 MB. Free memory was 82.5 MB in the beginning and 81.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 627.40 ms. Allocated memory is still 109.1 MB. Free memory was 81.3 MB in the beginning and 68.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11158.28 ms. Allocated memory was 109.1 MB in the beginning and 312.5 MB in the end (delta: 203.4 MB). Free memory was 67.8 MB in the beginning and 158.3 MB in the end (delta: -90.5 MB). Peak memory consumption was 115.3 MB. Max. memory is 16.1 GB. * Witness Printer took 54.62 ms. Allocated memory is still 312.5 MB. Free memory was 158.3 MB in the beginning and 155.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 100]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 112 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 45.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10982.9ms, OverallIterations: 10, TraceHistogramMax: 3, EmptinessCheckTime: 0.0ms, AutomataDifference: 5653.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 157.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 156 SDtfs, 257 SDslu, 479 SDs, 0 SdLazy, 1146 SolverSat, 126 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 926.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 333 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1125.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=901occurred in iteration=9, InterpolantAutomatonStates: 78, 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: 116.5ms SsaConstructionTime, 761.1ms SatisfiabilityAnalysisTime, 2992.1ms InterpolantComputationTime, 978 NumberOfCodeBlocks, 978 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 965 ConstructedInterpolants, 0 QuantifiedInterpolants, 3253 SizeOfPredicates, 21 NumberOfNonLiveVariables, 575 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 53/83 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-21 20:25:29,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48c3686-5c51-43c7-9358-b5f86658c081/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...