./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5655d3bf-a92f-48c9-abd0-c75eb5d5563b/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5655d3bf-a92f-48c9-abd0-c75eb5d5563b/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5655d3bf-a92f-48c9-abd0-c75eb5d5563b/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5655d3bf-a92f-48c9-abd0-c75eb5d5563b/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5655d3bf-a92f-48c9-abd0-c75eb5d5563b/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5655d3bf-a92f-48c9-abd0-c75eb5d5563b/bin/uautomizer-IVEQpCNsaX --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 6e064514c886eab27bff1253cfa87b1ac324d3dc8890599c3d4384e987c0d244 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:57:58,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:57:58,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:57:58,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:57:58,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:57:58,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:57:58,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:57:58,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:57:58,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:57:58,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:57:58,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:57:58,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:57:58,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:57:58,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:57:58,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:57:58,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:57:58,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:57:58,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:57:58,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:57:58,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:57:58,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:57:58,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:57:58,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:57:58,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:57:58,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:57:58,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:57:58,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:57:58,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:57:58,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:57:58,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:57:58,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:57:58,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:57:58,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:57:58,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:57:58,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:57:58,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:57:58,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:57:58,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:57:58,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:57:58,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:57:58,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:57:58,972 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5655d3bf-a92f-48c9-abd0-c75eb5d5563b/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 08:57:59,030 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:57:59,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:57:59,032 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:57:59,032 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:57:59,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:57:59,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:57:59,040 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:57:59,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:57:59,041 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:57:59,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:57:59,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:57:59,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:57:59,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:57:59,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:57:59,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:57:59,042 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:57:59,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:57:59,043 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:57:59,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:57:59,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:57:59,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:57:59,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:57:59,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:57:59,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:57:59,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:57:59,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:57:59,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:57:59,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:57:59,045 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:57:59,045 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:57:59,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:57:59,046 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:57:59,046 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_5655d3bf-a92f-48c9-abd0-c75eb5d5563b/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5655d3bf-a92f-48c9-abd0-c75eb5d5563b/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e064514c886eab27bff1253cfa87b1ac324d3dc8890599c3d4384e987c0d244 [2021-11-09 08:57:59,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:57:59,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:57:59,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:57:59,341 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:57:59,342 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:57:59,343 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5655d3bf-a92f-48c9-abd0-c75eb5d5563b/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c [2021-11-09 08:57:59,416 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5655d3bf-a92f-48c9-abd0-c75eb5d5563b/bin/uautomizer-IVEQpCNsaX/data/1251902e5/70d4764b55904c8b89d842a4e8495b22/FLAG38b9803bd [2021-11-09 08:57:59,874 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:57:59,875 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5655d3bf-a92f-48c9-abd0-c75eb5d5563b/sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c [2021-11-09 08:57:59,889 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5655d3bf-a92f-48c9-abd0-c75eb5d5563b/bin/uautomizer-IVEQpCNsaX/data/1251902e5/70d4764b55904c8b89d842a4e8495b22/FLAG38b9803bd [2021-11-09 08:58:00,252 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5655d3bf-a92f-48c9-abd0-c75eb5d5563b/bin/uautomizer-IVEQpCNsaX/data/1251902e5/70d4764b55904c8b89d842a4e8495b22 [2021-11-09 08:58:00,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:58:00,257 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:58:00,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:58:00,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:58:00,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:58:00,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:58:00" (1/1) ... [2021-11-09 08:58:00,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11701af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:00, skipping insertion in model container [2021-11-09 08:58:00,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:58:00" (1/1) ... [2021-11-09 08:58:00,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:58:00,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:58:00,501 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_5655d3bf-a92f-48c9-abd0-c75eb5d5563b/sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c[2212,2225] [2021-11-09 08:58:00,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:58:00,515 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:58:00,539 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_5655d3bf-a92f-48c9-abd0-c75eb5d5563b/sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c[2212,2225] [2021-11-09 08:58:00,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:58:00,554 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:58:00,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:00 WrapperNode [2021-11-09 08:58:00,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:58:00,555 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:58:00,555 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:58:00,556 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:58:00,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:00" (1/1) ... [2021-11-09 08:58:00,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:00" (1/1) ... [2021-11-09 08:58:00,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:58:00,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:58:00,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:58:00,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:58:00,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:00" (1/1) ... [2021-11-09 08:58:00,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:00" (1/1) ... [2021-11-09 08:58:00,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:00" (1/1) ... [2021-11-09 08:58:00,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:00" (1/1) ... [2021-11-09 08:58:00,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:00" (1/1) ... [2021-11-09 08:58:00,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:00" (1/1) ... [2021-11-09 08:58:00,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:00" (1/1) ... [2021-11-09 08:58:00,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:58:00,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:58:00,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:58:00,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:58:00,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:00" (1/1) ... [2021-11-09 08:58:00,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:58:00,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5655d3bf-a92f-48c9-abd0-c75eb5d5563b/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:58:00,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5655d3bf-a92f-48c9-abd0-c75eb5d5563b/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:58:00,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5655d3bf-a92f-48c9-abd0-c75eb5d5563b/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:58:00,698 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-09 08:58:00,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-09 08:58:00,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-09 08:58:00,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-09 08:58:00,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-09 08:58:00,700 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-09 08:58:00,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:58:00,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:58:00,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 08:58:00,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-09 08:58:00,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-09 08:58:00,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:58:00,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:58:00,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 08:58:00,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 08:58:00,703 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-09 08:58:00,988 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:58:00,989 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-09 08:58:00,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:58:00 BoogieIcfgContainer [2021-11-09 08:58:00,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:58:00,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:58:00,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:58:01,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:58:01,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:58:00" (1/3) ... [2021-11-09 08:58:01,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e20e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:58:01, skipping insertion in model container [2021-11-09 08:58:01,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:00" (2/3) ... [2021-11-09 08:58:01,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e20e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:58:01, skipping insertion in model container [2021-11-09 08:58:01,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:58:00" (3/3) ... [2021-11-09 08:58:01,011 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-simple-equiv.wvr.c [2021-11-09 08:58:01,018 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-09 08:58:01,018 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:58:01,019 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 08:58:01,019 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-09 08:58:01,093 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:58:01,094 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:58:01,094 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:58:01,094 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:58:01,094 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:58:01,095 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:58:01,095 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:58:01,095 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:58:01,096 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:58:01,096 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:58:01,096 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:58:01,096 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:58:01,097 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:58:01,097 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:58:01,098 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:58:01,098 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:58:01,101 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:58:01,102 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:58:01,102 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:58:01,104 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:58:01,105 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:58:01,105 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:58:01,107 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:58:01,107 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:58:01,141 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-09 08:58:01,195 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:58:01,218 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 [2021-11-09 08:58:01,218 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-09 08:58:01,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 86 transitions, 196 flow [2021-11-09 08:58:01,299 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2021-11-09 08:58:01,299 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-09 08:58:01,302 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 83 events. 2/83 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 25 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2021-11-09 08:58:01,302 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 86 transitions, 196 flow [2021-11-09 08:58:01,308 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 73 transitions, 164 flow [2021-11-09 08:58:01,335 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-11-09 08:58:01,335 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-09 08:58:01,335 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:58:01,336 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:58:01,336 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 08:58:01,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:01,342 INFO L85 PathProgramCache]: Analyzing trace with hash 431681001, now seen corresponding path program 1 times [2021-11-09 08:58:01,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:01,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095116314] [2021-11-09 08:58:01,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:01,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:02,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:02,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:02,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095116314] [2021-11-09 08:58:02,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095116314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:02,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:02,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 08:58:02,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822972989] [2021-11-09 08:58:02,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 08:58:02,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:02,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 08:58:02,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:58:02,340 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 86 [2021-11-09 08:58:02,349 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 73 transitions, 164 flow. Second operand has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:02,351 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:58:02,351 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 86 [2021-11-09 08:58:02,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:58:04,909 INFO L129 PetriNetUnfolder]: 20/159 cut-off events. [2021-11-09 08:58:04,909 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-11-09 08:58:04,912 INFO L84 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 159 events. 20/159 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 411 event pairs, 4 based on Foata normal form. 3/157 useless extension candidates. Maximal degree in co-relation 157. Up to 41 conditions per place. [2021-11-09 08:58:04,914 INFO L132 encePairwiseOnDemand]: 70/86 looper letters, 17 selfloop transitions, 15 changer transitions 10/91 dead transitions. [2021-11-09 08:58:04,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 91 transitions, 284 flow [2021-11-09 08:58:04,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 08:58:04,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-09 08:58:04,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 839 transitions. [2021-11-09 08:58:04,941 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7504472271914132 [2021-11-09 08:58:04,942 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 839 transitions. [2021-11-09 08:58:04,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 839 transitions. [2021-11-09 08:58:04,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:58:04,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 839 transitions. [2021-11-09 08:58:04,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 64.53846153846153) internal successors, (839), 13 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:04,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 86.0) internal successors, (1204), 14 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:04,973 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 86.0) internal successors, (1204), 14 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:04,975 INFO L186 Difference]: Start difference. First operand has 81 places, 73 transitions, 164 flow. Second operand 13 states and 839 transitions. [2021-11-09 08:58:04,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 91 transitions, 284 flow [2021-11-09 08:58:04,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 91 transitions, 272 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-11-09 08:58:04,994 INFO L242 Difference]: Finished difference. Result has 92 places, 81 transitions, 235 flow [2021-11-09 08:58:04,996 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=235, PETRI_PLACES=92, PETRI_TRANSITIONS=81} [2021-11-09 08:58:04,996 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 11 predicate places. [2021-11-09 08:58:04,997 INFO L470 AbstractCegarLoop]: Abstraction has has 92 places, 81 transitions, 235 flow [2021-11-09 08:58:04,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:04,998 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:58:04,998 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:58:04,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:58:04,999 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 08:58:04,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:05,000 INFO L85 PathProgramCache]: Analyzing trace with hash -42878295, now seen corresponding path program 2 times [2021-11-09 08:58:05,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:05,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711320171] [2021-11-09 08:58:05,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:05,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:05,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:05,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:05,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711320171] [2021-11-09 08:58:05,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711320171] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:05,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:05,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-09 08:58:05,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826441585] [2021-11-09 08:58:05,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 08:58:05,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:05,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 08:58:05,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:58:05,442 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 86 [2021-11-09 08:58:05,444 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 81 transitions, 235 flow. Second operand has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:05,444 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:58:05,444 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 86 [2021-11-09 08:58:05,445 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:58:05,848 INFO L129 PetriNetUnfolder]: 22/162 cut-off events. [2021-11-09 08:58:05,848 INFO L130 PetriNetUnfolder]: For 39/49 co-relation queries the response was YES. [2021-11-09 08:58:05,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 162 events. 22/162 cut-off events. For 39/49 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 460 event pairs, 0 based on Foata normal form. 6/165 useless extension candidates. Maximal degree in co-relation 317. Up to 46 conditions per place. [2021-11-09 08:58:05,851 INFO L132 encePairwiseOnDemand]: 74/86 looper letters, 28 selfloop transitions, 18 changer transitions 10/105 dead transitions. [2021-11-09 08:58:05,851 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 105 transitions, 451 flow [2021-11-09 08:58:05,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 08:58:05,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-11-09 08:58:05,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 775 transitions. [2021-11-09 08:58:05,860 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.750968992248062 [2021-11-09 08:58:05,861 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 775 transitions. [2021-11-09 08:58:05,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 775 transitions. [2021-11-09 08:58:05,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:58:05,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 775 transitions. [2021-11-09 08:58:05,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 64.58333333333333) internal successors, (775), 12 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:05,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 86.0) internal successors, (1118), 13 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:05,871 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 86.0) internal successors, (1118), 13 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:05,871 INFO L186 Difference]: Start difference. First operand has 92 places, 81 transitions, 235 flow. Second operand 12 states and 775 transitions. [2021-11-09 08:58:05,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 105 transitions, 451 flow [2021-11-09 08:58:05,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 105 transitions, 437 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-11-09 08:58:05,885 INFO L242 Difference]: Finished difference. Result has 98 places, 95 transitions, 376 flow [2021-11-09 08:58:05,885 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=376, PETRI_PLACES=98, PETRI_TRANSITIONS=95} [2021-11-09 08:58:05,886 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 17 predicate places. [2021-11-09 08:58:05,886 INFO L470 AbstractCegarLoop]: Abstraction has has 98 places, 95 transitions, 376 flow [2021-11-09 08:58:05,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:05,887 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:58:05,887 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:58:05,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:58:05,888 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 08:58:05,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:05,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1081434737, now seen corresponding path program 3 times [2021-11-09 08:58:05,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:05,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185273933] [2021-11-09 08:58:05,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:05,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:06,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:06,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:06,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185273933] [2021-11-09 08:58:06,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185273933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:06,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:06,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 08:58:06,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221895790] [2021-11-09 08:58:06,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 08:58:06,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:06,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 08:58:06,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:58:06,364 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 86 [2021-11-09 08:58:06,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 95 transitions, 376 flow. Second operand has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:06,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:58:06,366 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 86 [2021-11-09 08:58:06,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:58:06,745 INFO L129 PetriNetUnfolder]: 18/161 cut-off events. [2021-11-09 08:58:06,745 INFO L130 PetriNetUnfolder]: For 100/128 co-relation queries the response was YES. [2021-11-09 08:58:06,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 393 conditions, 161 events. 18/161 cut-off events. For 100/128 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 476 event pairs, 0 based on Foata normal form. 13/171 useless extension candidates. Maximal degree in co-relation 376. Up to 41 conditions per place. [2021-11-09 08:58:06,748 INFO L132 encePairwiseOnDemand]: 74/86 looper letters, 26 selfloop transitions, 19 changer transitions 7/101 dead transitions. [2021-11-09 08:58:06,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 101 transitions, 512 flow [2021-11-09 08:58:06,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 08:58:06,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-09 08:58:06,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 832 transitions. [2021-11-09 08:58:06,753 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7441860465116279 [2021-11-09 08:58:06,753 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 832 transitions. [2021-11-09 08:58:06,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 832 transitions. [2021-11-09 08:58:06,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:58:06,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 832 transitions. [2021-11-09 08:58:06,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 64.0) internal successors, (832), 13 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:06,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 86.0) internal successors, (1204), 14 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:06,761 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 86.0) internal successors, (1204), 14 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:06,761 INFO L186 Difference]: Start difference. First operand has 98 places, 95 transitions, 376 flow. Second operand 13 states and 832 transitions. [2021-11-09 08:58:06,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 101 transitions, 512 flow [2021-11-09 08:58:06,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 101 transitions, 476 flow, removed 16 selfloop flow, removed 5 redundant places. [2021-11-09 08:58:06,769 INFO L242 Difference]: Finished difference. Result has 106 places, 94 transitions, 392 flow [2021-11-09 08:58:06,770 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=392, PETRI_PLACES=106, PETRI_TRANSITIONS=94} [2021-11-09 08:58:06,770 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 25 predicate places. [2021-11-09 08:58:06,770 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 94 transitions, 392 flow [2021-11-09 08:58:06,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:06,771 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:58:06,771 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:58:06,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 08:58:06,772 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 08:58:06,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:06,773 INFO L85 PathProgramCache]: Analyzing trace with hash -2061773045, now seen corresponding path program 4 times [2021-11-09 08:58:06,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:06,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20494887] [2021-11-09 08:58:06,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:06,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:07,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:07,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:07,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20494887] [2021-11-09 08:58:07,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20494887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:07,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:07,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 08:58:07,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341047898] [2021-11-09 08:58:07,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 08:58:07,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:07,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 08:58:07,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:58:07,173 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 86 [2021-11-09 08:58:07,175 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 94 transitions, 392 flow. Second operand has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:07,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:58:07,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 86 [2021-11-09 08:58:07,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:58:07,634 INFO L129 PetriNetUnfolder]: 17/172 cut-off events. [2021-11-09 08:58:07,634 INFO L130 PetriNetUnfolder]: For 136/153 co-relation queries the response was YES. [2021-11-09 08:58:07,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 172 events. 17/172 cut-off events. For 136/153 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 550 event pairs, 0 based on Foata normal form. 11/181 useless extension candidates. Maximal degree in co-relation 410. Up to 23 conditions per place. [2021-11-09 08:58:07,637 INFO L132 encePairwiseOnDemand]: 74/86 looper letters, 14 selfloop transitions, 15 changer transitions 32/110 dead transitions. [2021-11-09 08:58:07,637 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 110 transitions, 622 flow [2021-11-09 08:58:07,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 08:58:07,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-09 08:58:07,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 838 transitions. [2021-11-09 08:58:07,641 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7495527728085868 [2021-11-09 08:58:07,641 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 838 transitions. [2021-11-09 08:58:07,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 838 transitions. [2021-11-09 08:58:07,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:58:07,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 838 transitions. [2021-11-09 08:58:07,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 64.46153846153847) internal successors, (838), 13 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:07,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 86.0) internal successors, (1204), 14 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:07,649 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 86.0) internal successors, (1204), 14 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:07,650 INFO L186 Difference]: Start difference. First operand has 106 places, 94 transitions, 392 flow. Second operand 13 states and 838 transitions. [2021-11-09 08:58:07,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 110 transitions, 622 flow [2021-11-09 08:58:07,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 110 transitions, 531 flow, removed 14 selfloop flow, removed 14 redundant places. [2021-11-09 08:58:07,656 INFO L242 Difference]: Finished difference. Result has 106 places, 78 transitions, 289 flow [2021-11-09 08:58:07,657 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=289, PETRI_PLACES=106, PETRI_TRANSITIONS=78} [2021-11-09 08:58:07,657 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 25 predicate places. [2021-11-09 08:58:07,657 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 78 transitions, 289 flow [2021-11-09 08:58:07,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:07,658 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:58:07,658 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:58:07,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 08:58:07,659 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 08:58:07,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:07,659 INFO L85 PathProgramCache]: Analyzing trace with hash 847406927, now seen corresponding path program 5 times [2021-11-09 08:58:07,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:07,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055350751] [2021-11-09 08:58:07,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:07,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:08,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:08,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:08,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055350751] [2021-11-09 08:58:08,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055350751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:08,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:08,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 08:58:08,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160253174] [2021-11-09 08:58:08,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 08:58:08,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:08,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 08:58:08,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:58:08,004 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 86 [2021-11-09 08:58:08,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 78 transitions, 289 flow. Second operand has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:08,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:58:08,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 86 [2021-11-09 08:58:08,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:58:08,339 INFO L129 PetriNetUnfolder]: 2/102 cut-off events. [2021-11-09 08:58:08,340 INFO L130 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2021-11-09 08:58:08,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 102 events. 2/102 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 163 event pairs, 0 based on Foata normal form. 1/103 useless extension candidates. Maximal degree in co-relation 202. Up to 16 conditions per place. [2021-11-09 08:58:08,341 INFO L132 encePairwiseOnDemand]: 74/86 looper letters, 14 selfloop transitions, 8 changer transitions 10/81 dead transitions. [2021-11-09 08:58:08,341 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 81 transitions, 363 flow [2021-11-09 08:58:08,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 08:58:08,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-11-09 08:58:08,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 763 transitions. [2021-11-09 08:58:08,346 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7393410852713178 [2021-11-09 08:58:08,347 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 763 transitions. [2021-11-09 08:58:08,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 763 transitions. [2021-11-09 08:58:08,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:58:08,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 763 transitions. [2021-11-09 08:58:08,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 63.583333333333336) internal successors, (763), 12 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:08,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 86.0) internal successors, (1118), 13 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:08,354 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 86.0) internal successors, (1118), 13 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:08,354 INFO L186 Difference]: Start difference. First operand has 106 places, 78 transitions, 289 flow. Second operand 12 states and 763 transitions. [2021-11-09 08:58:08,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 81 transitions, 363 flow [2021-11-09 08:58:08,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 81 transitions, 297 flow, removed 14 selfloop flow, removed 16 redundant places. [2021-11-09 08:58:08,358 INFO L242 Difference]: Finished difference. Result has 99 places, 71 transitions, 200 flow [2021-11-09 08:58:08,359 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=200, PETRI_PLACES=99, PETRI_TRANSITIONS=71} [2021-11-09 08:58:08,359 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 18 predicate places. [2021-11-09 08:58:08,359 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 71 transitions, 200 flow [2021-11-09 08:58:08,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:08,360 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:58:08,360 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:58:08,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 08:58:08,361 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 08:58:08,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:08,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1374337329, now seen corresponding path program 6 times [2021-11-09 08:58:08,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:08,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733598401] [2021-11-09 08:58:08,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:08,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:08,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:08,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:08,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733598401] [2021-11-09 08:58:08,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733598401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:08,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:08,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 08:58:08,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044518241] [2021-11-09 08:58:08,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 08:58:08,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:08,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 08:58:08,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:58:08,676 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 86 [2021-11-09 08:58:08,677 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 71 transitions, 200 flow. Second operand has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:08,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:58:08,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 86 [2021-11-09 08:58:08,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:58:08,953 INFO L129 PetriNetUnfolder]: 1/74 cut-off events. [2021-11-09 08:58:08,953 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-11-09 08:58:08,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 74 events. 1/74 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 1/75 useless extension candidates. Maximal degree in co-relation 124. Up to 7 conditions per place. [2021-11-09 08:58:08,954 INFO L132 encePairwiseOnDemand]: 74/86 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2021-11-09 08:58:08,954 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 69 transitions, 236 flow [2021-11-09 08:58:08,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 08:58:08,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-11-09 08:58:08,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 754 transitions. [2021-11-09 08:58:08,957 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7306201550387597 [2021-11-09 08:58:08,958 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 754 transitions. [2021-11-09 08:58:08,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 754 transitions. [2021-11-09 08:58:08,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:58:08,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 754 transitions. [2021-11-09 08:58:08,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 62.833333333333336) internal successors, (754), 12 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:08,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 86.0) internal successors, (1118), 13 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:08,965 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 86.0) internal successors, (1118), 13 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:08,966 INFO L186 Difference]: Start difference. First operand has 99 places, 71 transitions, 200 flow. Second operand 12 states and 754 transitions. [2021-11-09 08:58:08,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 69 transitions, 236 flow [2021-11-09 08:58:08,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 69 transitions, 194 flow, removed 6 selfloop flow, removed 15 redundant places. [2021-11-09 08:58:08,968 INFO L242 Difference]: Finished difference. Result has 85 places, 0 transitions, 0 flow [2021-11-09 08:58:08,969 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=85, PETRI_TRANSITIONS=0} [2021-11-09 08:58:08,969 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 4 predicate places. [2021-11-09 08:58:08,969 INFO L470 AbstractCegarLoop]: Abstraction has has 85 places, 0 transitions, 0 flow [2021-11-09 08:58:08,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:08,973 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 08:58:08,973 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-11-09 08:58:08,974 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-11-09 08:58:08,974 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-11-09 08:58:08,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 08:58:08,978 INFO L731 BasicCegarLoop]: Path program histogram: [6] [2021-11-09 08:58:08,981 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-09 08:58:08,981 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 08:58:08,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 08:58:08 BasicIcfg [2021-11-09 08:58:08,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 08:58:08,985 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 08:58:08,985 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 08:58:08,986 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 08:58:08,986 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:58:00" (3/4) ... [2021-11-09 08:58:08,990 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-09 08:58:08,997 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-11-09 08:58:08,997 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-11-09 08:58:08,997 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-11-09 08:58:09,003 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-11-09 08:58:09,004 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-09 08:58:09,004 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 08:58:09,004 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 08:58:09,048 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5655d3bf-a92f-48c9-abd0-c75eb5d5563b/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 08:58:09,048 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 08:58:09,050 INFO L168 Benchmark]: Toolchain (without parser) took 8792.53 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 71.4 MB in the beginning and 104.1 MB in the end (delta: -32.8 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2021-11-09 08:58:09,051 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 102.8 MB. Free memory is still 58.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:58:09,051 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.63 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 71.4 MB in the beginning and 98.2 MB in the end (delta: -26.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 08:58:09,052 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.56 ms. Allocated memory is still 123.7 MB. Free memory was 98.2 MB in the beginning and 96.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:58:09,052 INFO L168 Benchmark]: Boogie Preprocessor took 26.23 ms. Allocated memory is still 123.7 MB. Free memory was 96.7 MB in the beginning and 95.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 08:58:09,053 INFO L168 Benchmark]: RCFGBuilder took 374.32 ms. Allocated memory is still 123.7 MB. Free memory was 95.2 MB in the beginning and 82.4 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-09 08:58:09,053 INFO L168 Benchmark]: TraceAbstraction took 7991.08 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 81.9 MB in the beginning and 107.3 MB in the end (delta: -25.4 MB). Peak memory consumption was 1.9 MB. Max. memory is 16.1 GB. [2021-11-09 08:58:09,054 INFO L168 Benchmark]: Witness Printer took 63.50 ms. Allocated memory is still 148.9 MB. Free memory was 107.3 MB in the beginning and 104.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-09 08:58:09,057 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 102.8 MB. Free memory is still 58.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 294.63 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 71.4 MB in the beginning and 98.2 MB in the end (delta: -26.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.56 ms. Allocated memory is still 123.7 MB. Free memory was 98.2 MB in the beginning and 96.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.23 ms. Allocated memory is still 123.7 MB. Free memory was 96.7 MB in the beginning and 95.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 374.32 ms. Allocated memory is still 123.7 MB. Free memory was 95.2 MB in the beginning and 82.4 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7991.08 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 81.9 MB in the beginning and 107.3 MB in the end (delta: -25.4 MB). Peak memory consumption was 1.9 MB. Max. memory is 16.1 GB. * Witness Printer took 63.50 ms. Allocated memory is still 148.9 MB. Free memory was 107.3 MB in the beginning and 104.1 MB in the end (delta: 3.1 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 82]: 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, 103 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 102 SDslu, 237 SDs, 0 SdLazy, 1046 SolverSat, 91 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 14 SyntacticMatches, 11 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=392occurred in iteration=3, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 414 NumberOfCodeBlocks, 414 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 408 ConstructedInterpolants, 0 QuantifiedInterpolants, 7839 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-09 08:58:09,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5655d3bf-a92f-48c9-abd0-c75eb5d5563b/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE