./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b27d2c0de3bd785d7b0c7ad6e06bc0deeddc3f352acc333757e88f24286e9797 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 22:54:29,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:54:29,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:54:29,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:54:29,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:54:29,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:54:29,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:54:29,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:54:29,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:54:29,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:54:29,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:54:29,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:54:29,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:54:29,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:54:29,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:54:29,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:54:29,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:54:29,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:54:29,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:54:29,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:54:29,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:54:29,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:54:29,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:54:29,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:54:29,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:54:29,929 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:54:29,930 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:54:29,931 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:54:29,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:54:29,934 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:54:29,935 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:54:29,936 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:54:29,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:54:29,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:54:29,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:54:29,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:54:29,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:54:29,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:54:29,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:54:29,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:54:29,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:54:29,948 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 22:54:29,980 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:54:29,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:54:29,981 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:54:29,982 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:54:29,983 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:54:29,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:54:29,984 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:54:29,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:54:29,986 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:54:29,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:54:29,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:54:29,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:54:29,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 22:54:29,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 22:54:29,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 22:54:29,989 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:54:29,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 22:54:29,990 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:54:29,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 22:54:29,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:54:29,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:54:29,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 22:54:29,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:54:29,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:54:29,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 22:54:29,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 22:54:29,992 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:54:29,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 22:54:29,993 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 22:54:29,993 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 22:54:29,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 22:54:29,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:54:29,994 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_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b27d2c0de3bd785d7b0c7ad6e06bc0deeddc3f352acc333757e88f24286e9797 [2021-10-28 22:54:30,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:54:30,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:54:30,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:54:30,415 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:54:30,418 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:54:30,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c [2021-10-28 22:54:30,514 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/data/3569a5df7/7204c0d931b14029b851de50c66b1fe3/FLAGbec64af27 [2021-10-28 22:54:31,082 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:54:31,082 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c [2021-10-28 22:54:31,091 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/data/3569a5df7/7204c0d931b14029b851de50c66b1fe3/FLAGbec64af27 [2021-10-28 22:54:31,455 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/data/3569a5df7/7204c0d931b14029b851de50c66b1fe3 [2021-10-28 22:54:31,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:54:31,469 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 22:54:31,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:54:31,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:54:31,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:54:31,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:54:31" (1/1) ... [2021-10-28 22:54:31,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a82bd13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:31, skipping insertion in model container [2021-10-28 22:54:31,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:54:31" (1/1) ... [2021-10-28 22:54:31,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:54:31,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:54:31,743 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_c9964ce8-7262-40e4-8994-3d8151734288/sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c[2332,2345] [2021-10-28 22:54:31,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:54:31,756 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:54:31,780 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_c9964ce8-7262-40e4-8994-3d8151734288/sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c[2332,2345] [2021-10-28 22:54:31,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:54:31,798 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:54:31,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:31 WrapperNode [2021-10-28 22:54:31,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:54:31,800 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 22:54:31,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 22:54:31,801 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 22:54:31,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:31" (1/1) ... [2021-10-28 22:54:31,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:31" (1/1) ... [2021-10-28 22:54:31,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 22:54:31,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:54:31,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:54:31,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:54:31,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:31" (1/1) ... [2021-10-28 22:54:31,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:31" (1/1) ... [2021-10-28 22:54:31,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:31" (1/1) ... [2021-10-28 22:54:31,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:31" (1/1) ... [2021-10-28 22:54:31,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:31" (1/1) ... [2021-10-28 22:54:31,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:31" (1/1) ... [2021-10-28 22:54:31,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:31" (1/1) ... [2021-10-28 22:54:31,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:54:31,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:54:31,880 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:54:31,880 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:54:31,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:31" (1/1) ... [2021-10-28 22:54:31,890 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:54:31,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:54:31,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 22:54:31,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 22:54:31,982 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-28 22:54:31,983 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-28 22:54:31,983 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-28 22:54:31,983 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-28 22:54:31,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 22:54:31,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:54:31,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 22:54:31,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 22:54:31,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 22:54:31,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:54:31,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:54:31,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 22:54:31,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 22:54:31,987 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 22:54:32,391 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:54:32,405 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-28 22:54:32,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:54:32 BoogieIcfgContainer [2021-10-28 22:54:32,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:54:32,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 22:54:32,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 22:54:32,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 22:54:32,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:54:31" (1/3) ... [2021-10-28 22:54:32,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f79ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:54:32, skipping insertion in model container [2021-10-28 22:54:32,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:31" (2/3) ... [2021-10-28 22:54:32,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f79ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:54:32, skipping insertion in model container [2021-10-28 22:54:32,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:54:32" (3/3) ... [2021-10-28 22:54:32,443 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-2-unrolled.wvr.c [2021-10-28 22:54:32,450 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 22:54:32,450 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 22:54:32,450 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 22:54:32,451 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 22:54:32,531 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,531 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,531 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,532 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,532 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,532 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,533 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,533 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,533 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,534 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,534 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,534 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,535 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,535 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,535 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,536 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,536 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,536 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,537 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,537 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,538 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,538 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,540 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,540 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,540 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,541 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,541 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,556 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,556 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,556 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,557 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,557 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,558 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,561 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,569 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,569 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,570 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,570 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,570 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,578 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,578 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,579 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,579 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:54:32,611 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-28 22:54:32,688 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 22:54:32,709 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 22:54:32,714 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 22:54:32,736 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 90 transitions, 196 flow [2021-10-28 22:54:32,807 INFO L129 PetriNetUnfolder]: 6/88 cut-off events. [2021-10-28 22:54:32,808 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 22:54:32,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 88 events. 6/88 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2021-10-28 22:54:32,813 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 90 transitions, 196 flow [2021-10-28 22:54:32,819 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 80 transitions, 172 flow [2021-10-28 22:54:32,846 INFO L129 PetriNetUnfolder]: 6/79 cut-off events. [2021-10-28 22:54:32,852 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 22:54:32,853 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:54:32,854 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] [2021-10-28 22:54:32,855 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 22:54:32,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:32,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1268513170, now seen corresponding path program 1 times [2021-10-28 22:54:32,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:32,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471569098] [2021-10-28 22:54:32,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:32,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:33,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:33,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:33,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471569098] [2021-10-28 22:54:33,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471569098] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:33,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:33,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 22:54:33,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428722682] [2021-10-28 22:54:33,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 22:54:33,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:33,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 22:54:33,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 22:54:33,170 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 90 [2021-10-28 22:54:33,174 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 80 transitions, 172 flow. Second operand has 2 states, 2 states have (on average 86.0) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:33,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:54:33,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 90 [2021-10-28 22:54:33,176 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:54:33,212 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2021-10-28 22:54:33,242 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 22:54:33,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 2/76 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 4/76 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2021-10-28 22:54:33,245 INFO L132 encePairwiseOnDemand]: 86/90 looper letters, 0 selfloop transitions, 0 changer transitions 2/76 dead transitions. [2021-10-28 22:54:33,246 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 76 transitions, 164 flow [2021-10-28 22:54:33,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 22:54:33,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-28 22:54:33,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 174 transitions. [2021-10-28 22:54:33,266 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9666666666666667 [2021-10-28 22:54:33,268 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 174 transitions. [2021-10-28 22:54:33,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 174 transitions. [2021-10-28 22:54:33,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:54:33,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 174 transitions. [2021-10-28 22:54:33,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 87.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:33,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:33,296 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:33,298 INFO L186 Difference]: Start difference. First operand has 81 places, 80 transitions, 172 flow. Second operand 2 states and 174 transitions. [2021-10-28 22:54:33,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 76 transitions, 164 flow [2021-10-28 22:54:33,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 76 transitions, 156 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-28 22:54:33,332 INFO L242 Difference]: Finished difference. Result has 78 places, 74 transitions, 152 flow [2021-10-28 22:54:33,334 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=152, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2021-10-28 22:54:33,336 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, -3 predicate places. [2021-10-28 22:54:33,336 INFO L470 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 152 flow [2021-10-28 22:54:33,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 86.0) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:33,337 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:54:33,337 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] [2021-10-28 22:54:33,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 22:54:33,338 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 22:54:33,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:33,339 INFO L85 PathProgramCache]: Analyzing trace with hash -100927222, now seen corresponding path program 1 times [2021-10-28 22:54:33,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:33,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623468756] [2021-10-28 22:54:33,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:33,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:33,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:33,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623468756] [2021-10-28 22:54:33,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623468756] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:33,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:33,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 22:54:33,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142377428] [2021-10-28 22:54:33,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 22:54:33,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:33,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 22:54:33,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:54:33,742 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 90 [2021-10-28 22:54:33,743 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 152 flow. Second operand has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:33,743 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:54:33,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 90 [2021-10-28 22:54:33,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:54:33,967 INFO L129 PetriNetUnfolder]: 11/119 cut-off events. [2021-10-28 22:54:33,967 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 22:54:33,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 119 events. 11/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 252 event pairs, 2 based on Foata normal form. 1/113 useless extension candidates. Maximal degree in co-relation 150. Up to 22 conditions per place. [2021-10-28 22:54:33,973 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 9 selfloop transitions, 7 changer transitions 3/79 dead transitions. [2021-10-28 22:54:33,974 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 79 transitions, 200 flow [2021-10-28 22:54:33,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 22:54:33,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 22:54:33,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 503 transitions. [2021-10-28 22:54:33,984 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7984126984126985 [2021-10-28 22:54:33,985 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 503 transitions. [2021-10-28 22:54:33,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 503 transitions. [2021-10-28 22:54:33,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:54:33,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 503 transitions. [2021-10-28 22:54:33,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:33,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:33,995 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:33,995 INFO L186 Difference]: Start difference. First operand has 78 places, 74 transitions, 152 flow. Second operand 7 states and 503 transitions. [2021-10-28 22:54:33,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 79 transitions, 200 flow [2021-10-28 22:54:33,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 79 transitions, 200 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-28 22:54:34,000 INFO L242 Difference]: Finished difference. Result has 85 places, 76 transitions, 185 flow [2021-10-28 22:54:34,001 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=185, PETRI_PLACES=85, PETRI_TRANSITIONS=76} [2021-10-28 22:54:34,004 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 4 predicate places. [2021-10-28 22:54:34,004 INFO L470 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 185 flow [2021-10-28 22:54:34,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:34,005 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:54:34,005 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] [2021-10-28 22:54:34,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 22:54:34,006 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 22:54:34,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:34,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1039123079, now seen corresponding path program 1 times [2021-10-28 22:54:34,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:34,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95738854] [2021-10-28 22:54:34,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:34,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:34,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:34,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:34,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95738854] [2021-10-28 22:54:34,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95738854] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:34,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:34,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 22:54:34,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201815881] [2021-10-28 22:54:34,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:54:34,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:34,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:54:34,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:54:34,505 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 90 [2021-10-28 22:54:34,506 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 185 flow. Second operand has 6 states, 6 states have (on average 65.5) internal successors, (393), 6 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:34,506 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:54:34,506 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 90 [2021-10-28 22:54:34,506 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:54:34,784 INFO L129 PetriNetUnfolder]: 43/207 cut-off events. [2021-10-28 22:54:34,784 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-28 22:54:34,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 207 events. 43/207 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 650 event pairs, 3 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 337. Up to 59 conditions per place. [2021-10-28 22:54:34,791 INFO L132 encePairwiseOnDemand]: 81/90 looper letters, 25 selfloop transitions, 8 changer transitions 0/89 dead transitions. [2021-10-28 22:54:34,791 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 89 transitions, 283 flow [2021-10-28 22:54:34,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:54:34,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-28 22:54:34,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 412 transitions. [2021-10-28 22:54:34,795 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762962962962963 [2021-10-28 22:54:34,796 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 412 transitions. [2021-10-28 22:54:34,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 412 transitions. [2021-10-28 22:54:34,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:54:34,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 412 transitions. [2021-10-28 22:54:34,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:34,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 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) [2021-10-28 22:54:34,817 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 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) [2021-10-28 22:54:34,817 INFO L186 Difference]: Start difference. First operand has 85 places, 76 transitions, 185 flow. Second operand 6 states and 412 transitions. [2021-10-28 22:54:34,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 89 transitions, 283 flow [2021-10-28 22:54:34,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 89 transitions, 266 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-10-28 22:54:34,826 INFO L242 Difference]: Finished difference. Result has 85 places, 79 transitions, 210 flow [2021-10-28 22:54:34,826 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=85, PETRI_TRANSITIONS=79} [2021-10-28 22:54:34,826 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 4 predicate places. [2021-10-28 22:54:34,827 INFO L470 AbstractCegarLoop]: Abstraction has has 85 places, 79 transitions, 210 flow [2021-10-28 22:54:34,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.5) internal successors, (393), 6 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:34,841 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:54:34,842 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] [2021-10-28 22:54:34,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 22:54:34,843 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 22:54:34,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:34,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1366308469, now seen corresponding path program 2 times [2021-10-28 22:54:34,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:34,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609827272] [2021-10-28 22:54:34,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:34,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:35,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:35,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609827272] [2021-10-28 22:54:35,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609827272] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:35,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:35,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 22:54:35,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225366885] [2021-10-28 22:54:35,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:54:35,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:35,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:54:35,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:54:35,128 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 90 [2021-10-28 22:54:35,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 79 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 65.5) internal successors, (393), 6 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:35,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:54:35,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 90 [2021-10-28 22:54:35,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:54:35,282 INFO L129 PetriNetUnfolder]: 42/190 cut-off events. [2021-10-28 22:54:35,282 INFO L130 PetriNetUnfolder]: For 44/50 co-relation queries the response was YES. [2021-10-28 22:54:35,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 359 conditions, 190 events. 42/190 cut-off events. For 44/50 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 601 event pairs, 4 based on Foata normal form. 1/186 useless extension candidates. Maximal degree in co-relation 352. Up to 58 conditions per place. [2021-10-28 22:54:35,285 INFO L132 encePairwiseOnDemand]: 81/90 looper letters, 20 selfloop transitions, 7 changer transitions 2/85 dead transitions. [2021-10-28 22:54:35,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 85 transitions, 286 flow [2021-10-28 22:54:35,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:54:35,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-28 22:54:35,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 406 transitions. [2021-10-28 22:54:35,288 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7518518518518519 [2021-10-28 22:54:35,289 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 406 transitions. [2021-10-28 22:54:35,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 406 transitions. [2021-10-28 22:54:35,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:54:35,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 406 transitions. [2021-10-28 22:54:35,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:35,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 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) [2021-10-28 22:54:35,295 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 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) [2021-10-28 22:54:35,295 INFO L186 Difference]: Start difference. First operand has 85 places, 79 transitions, 210 flow. Second operand 6 states and 406 transitions. [2021-10-28 22:54:35,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 85 transitions, 286 flow [2021-10-28 22:54:35,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 85 transitions, 278 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-28 22:54:35,301 INFO L242 Difference]: Finished difference. Result has 89 places, 79 transitions, 226 flow [2021-10-28 22:54:35,302 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=226, PETRI_PLACES=89, PETRI_TRANSITIONS=79} [2021-10-28 22:54:35,302 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 8 predicate places. [2021-10-28 22:54:35,302 INFO L470 AbstractCegarLoop]: Abstraction has has 89 places, 79 transitions, 226 flow [2021-10-28 22:54:35,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.5) internal successors, (393), 6 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:35,303 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:54:35,304 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] [2021-10-28 22:54:35,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 22:54:35,304 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 22:54:35,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:35,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1881003806, now seen corresponding path program 1 times [2021-10-28 22:54:35,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:35,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975805065] [2021-10-28 22:54:35,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:35,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:35,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:35,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:35,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975805065] [2021-10-28 22:54:35,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975805065] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:35,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:35,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 22:54:35,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093922311] [2021-10-28 22:54:35,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:54:35,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:35,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:54:35,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:54:35,564 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 90 [2021-10-28 22:54:35,565 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 79 transitions, 226 flow. Second operand has 6 states, 6 states have (on average 65.5) internal successors, (393), 6 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:35,566 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:54:35,566 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 90 [2021-10-28 22:54:35,566 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:54:35,740 INFO L129 PetriNetUnfolder]: 40/243 cut-off events. [2021-10-28 22:54:35,740 INFO L130 PetriNetUnfolder]: For 89/99 co-relation queries the response was YES. [2021-10-28 22:54:35,742 INFO L84 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 243 events. 40/243 cut-off events. For 89/99 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 985 event pairs, 22 based on Foata normal form. 6/233 useless extension candidates. Maximal degree in co-relation 451. Up to 55 conditions per place. [2021-10-28 22:54:35,744 INFO L132 encePairwiseOnDemand]: 81/90 looper letters, 24 selfloop transitions, 8 changer transitions 0/89 dead transitions. [2021-10-28 22:54:35,744 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 320 flow [2021-10-28 22:54:35,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:54:35,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-28 22:54:35,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 411 transitions. [2021-10-28 22:54:35,749 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7611111111111111 [2021-10-28 22:54:35,749 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 411 transitions. [2021-10-28 22:54:35,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 411 transitions. [2021-10-28 22:54:35,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:54:35,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 411 transitions. [2021-10-28 22:54:35,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 68.5) internal successors, (411), 6 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:35,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 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) [2021-10-28 22:54:35,755 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 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) [2021-10-28 22:54:35,755 INFO L186 Difference]: Start difference. First operand has 89 places, 79 transitions, 226 flow. Second operand 6 states and 411 transitions. [2021-10-28 22:54:35,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 320 flow [2021-10-28 22:54:35,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 89 transitions, 298 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-10-28 22:54:35,762 INFO L242 Difference]: Finished difference. Result has 89 places, 80 transitions, 231 flow [2021-10-28 22:54:35,763 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=231, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2021-10-28 22:54:35,763 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 8 predicate places. [2021-10-28 22:54:35,763 INFO L470 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 231 flow [2021-10-28 22:54:35,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.5) internal successors, (393), 6 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:35,764 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:54:35,764 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] [2021-10-28 22:54:35,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 22:54:35,765 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 22:54:35,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:35,766 INFO L85 PathProgramCache]: Analyzing trace with hash 2089834872, now seen corresponding path program 2 times [2021-10-28 22:54:35,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:35,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968735678] [2021-10-28 22:54:35,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:35,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:35,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:35,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:35,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968735678] [2021-10-28 22:54:35,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968735678] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:35,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:35,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 22:54:35,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906948800] [2021-10-28 22:54:35,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:54:35,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:35,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:54:35,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:54:35,998 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 90 [2021-10-28 22:54:35,999 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 231 flow. Second operand has 6 states, 6 states have (on average 60.5) internal successors, (363), 6 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:35,999 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:54:35,999 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 90 [2021-10-28 22:54:36,000 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:54:36,233 INFO L129 PetriNetUnfolder]: 89/337 cut-off events. [2021-10-28 22:54:36,233 INFO L130 PetriNetUnfolder]: For 130/139 co-relation queries the response was YES. [2021-10-28 22:54:36,235 INFO L84 FinitePrefix]: Finished finitePrefix Result has 721 conditions, 337 events. 89/337 cut-off events. For 130/139 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1458 event pairs, 40 based on Foata normal form. 3/336 useless extension candidates. Maximal degree in co-relation 712. Up to 149 conditions per place. [2021-10-28 22:54:36,238 INFO L132 encePairwiseOnDemand]: 77/90 looper letters, 33 selfloop transitions, 13 changer transitions 1/97 dead transitions. [2021-10-28 22:54:36,239 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 97 transitions, 385 flow [2021-10-28 22:54:36,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 22:54:36,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 22:54:36,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 441 transitions. [2021-10-28 22:54:36,242 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7 [2021-10-28 22:54:36,242 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 441 transitions. [2021-10-28 22:54:36,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 441 transitions. [2021-10-28 22:54:36,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:54:36,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 441 transitions. [2021-10-28 22:54:36,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:36,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:36,248 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:36,249 INFO L186 Difference]: Start difference. First operand has 89 places, 80 transitions, 231 flow. Second operand 7 states and 441 transitions. [2021-10-28 22:54:36,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 97 transitions, 385 flow [2021-10-28 22:54:36,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 97 transitions, 374 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-28 22:54:36,255 INFO L242 Difference]: Finished difference. Result has 95 places, 85 transitions, 298 flow [2021-10-28 22:54:36,256 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=298, PETRI_PLACES=95, PETRI_TRANSITIONS=85} [2021-10-28 22:54:36,256 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 14 predicate places. [2021-10-28 22:54:36,256 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 85 transitions, 298 flow [2021-10-28 22:54:36,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.5) internal successors, (363), 6 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:36,257 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:54:36,257 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:54:36,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 22:54:36,258 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 22:54:36,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:36,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1691597627, now seen corresponding path program 1 times [2021-10-28 22:54:36,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:36,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784357321] [2021-10-28 22:54:36,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:36,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:36,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:54:36,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:36,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784357321] [2021-10-28 22:54:36,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784357321] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:54:36,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384888431] [2021-10-28 22:54:36,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:36,515 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:54:36,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:54:36,517 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:54:36,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 22:54:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:36,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 22:54:36,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:54:37,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:54:37,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384888431] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:54:37,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:54:37,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-10-28 22:54:37,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132445126] [2021-10-28 22:54:37,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 22:54:37,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:37,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 22:54:37,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-28 22:54:37,341 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 90 [2021-10-28 22:54:37,342 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 85 transitions, 298 flow. Second operand has 11 states, 11 states have (on average 70.63636363636364) internal successors, (777), 11 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:37,343 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:54:37,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 90 [2021-10-28 22:54:37,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:54:37,617 INFO L129 PetriNetUnfolder]: 37/274 cut-off events. [2021-10-28 22:54:37,617 INFO L130 PetriNetUnfolder]: For 165/176 co-relation queries the response was YES. [2021-10-28 22:54:37,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 274 events. 37/274 cut-off events. For 165/176 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1190 event pairs, 9 based on Foata normal form. 4/272 useless extension candidates. Maximal degree in co-relation 533. Up to 34 conditions per place. [2021-10-28 22:54:37,623 INFO L132 encePairwiseOnDemand]: 78/90 looper letters, 9 selfloop transitions, 13 changer transitions 4/94 dead transitions. [2021-10-28 22:54:37,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 94 transitions, 374 flow [2021-10-28 22:54:37,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 22:54:37,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 22:54:37,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 716 transitions. [2021-10-28 22:54:37,628 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7955555555555556 [2021-10-28 22:54:37,629 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 716 transitions. [2021-10-28 22:54:37,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 716 transitions. [2021-10-28 22:54:37,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:54:37,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 716 transitions. [2021-10-28 22:54:37,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 71.6) internal successors, (716), 10 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:37,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:37,640 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:37,640 INFO L186 Difference]: Start difference. First operand has 95 places, 85 transitions, 298 flow. Second operand 10 states and 716 transitions. [2021-10-28 22:54:37,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 94 transitions, 374 flow [2021-10-28 22:54:37,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 94 transitions, 368 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-10-28 22:54:37,650 INFO L242 Difference]: Finished difference. Result has 107 places, 90 transitions, 358 flow [2021-10-28 22:54:37,650 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=358, PETRI_PLACES=107, PETRI_TRANSITIONS=90} [2021-10-28 22:54:37,651 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 26 predicate places. [2021-10-28 22:54:37,651 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 90 transitions, 358 flow [2021-10-28 22:54:37,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 70.63636363636364) internal successors, (777), 11 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:37,652 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:54:37,652 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:54:37,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 22:54:37,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-28 22:54:37,866 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 22:54:37,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:37,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1081844369, now seen corresponding path program 2 times [2021-10-28 22:54:37,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:37,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756369723] [2021-10-28 22:54:37,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:37,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:38,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:54:38,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:38,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756369723] [2021-10-28 22:54:38,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756369723] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:54:38,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657812750] [2021-10-28 22:54:38,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 22:54:38,090 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:54:38,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:54:38,094 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:54:38,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 22:54:38,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 22:54:38,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:54:38,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 22:54:38,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:54:38,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:54:38,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657812750] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:54:38,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:54:38,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-10-28 22:54:38,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137537755] [2021-10-28 22:54:38,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 22:54:38,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:38,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 22:54:38,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-28 22:54:38,751 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 90 [2021-10-28 22:54:38,753 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 90 transitions, 358 flow. Second operand has 11 states, 11 states have (on average 70.63636363636364) internal successors, (777), 11 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:38,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:54:38,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 90 [2021-10-28 22:54:38,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:54:39,020 INFO L129 PetriNetUnfolder]: 48/351 cut-off events. [2021-10-28 22:54:39,021 INFO L130 PetriNetUnfolder]: For 393/427 co-relation queries the response was YES. [2021-10-28 22:54:39,023 INFO L84 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 351 events. 48/351 cut-off events. For 393/427 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1837 event pairs, 6 based on Foata normal form. 9/353 useless extension candidates. Maximal degree in co-relation 787. Up to 58 conditions per place. [2021-10-28 22:54:39,026 INFO L132 encePairwiseOnDemand]: 78/90 looper letters, 15 selfloop transitions, 17 changer transitions 3/103 dead transitions. [2021-10-28 22:54:39,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 103 transitions, 497 flow [2021-10-28 22:54:39,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 22:54:39,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 22:54:39,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 716 transitions. [2021-10-28 22:54:39,030 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7955555555555556 [2021-10-28 22:54:39,030 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 716 transitions. [2021-10-28 22:54:39,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 716 transitions. [2021-10-28 22:54:39,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:54:39,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 716 transitions. [2021-10-28 22:54:39,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 71.6) internal successors, (716), 10 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:39,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:39,039 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:39,039 INFO L186 Difference]: Start difference. First operand has 107 places, 90 transitions, 358 flow. Second operand 10 states and 716 transitions. [2021-10-28 22:54:39,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 103 transitions, 497 flow [2021-10-28 22:54:39,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 103 transitions, 466 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-10-28 22:54:39,046 INFO L242 Difference]: Finished difference. Result has 114 places, 100 transitions, 464 flow [2021-10-28 22:54:39,047 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=464, PETRI_PLACES=114, PETRI_TRANSITIONS=100} [2021-10-28 22:54:39,047 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 33 predicate places. [2021-10-28 22:54:39,047 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 100 transitions, 464 flow [2021-10-28 22:54:39,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 70.63636363636364) internal successors, (777), 11 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:39,048 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:54:39,048 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:54:39,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 22:54:39,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:54:39,262 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 22:54:39,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:39,262 INFO L85 PathProgramCache]: Analyzing trace with hash -895622345, now seen corresponding path program 3 times [2021-10-28 22:54:39,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:39,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717056095] [2021-10-28 22:54:39,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:39,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:39,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:39,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:39,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717056095] [2021-10-28 22:54:39,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717056095] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:54:39,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967175262] [2021-10-28 22:54:39,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 22:54:39,491 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:54:39,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:54:39,493 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:54:39,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 22:54:39,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 22:54:39,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:54:39,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 22:54:39,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:54:40,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:40,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967175262] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:54:40,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:54:40,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-10-28 22:54:40,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120980744] [2021-10-28 22:54:40,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 22:54:40,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:40,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 22:54:40,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:54:40,240 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 90 [2021-10-28 22:54:40,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 100 transitions, 464 flow. Second operand has 12 states, 12 states have (on average 70.5) internal successors, (846), 12 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:40,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:54:40,242 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 90 [2021-10-28 22:54:40,242 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:54:40,566 INFO L129 PetriNetUnfolder]: 44/339 cut-off events. [2021-10-28 22:54:40,566 INFO L130 PetriNetUnfolder]: For 526/569 co-relation queries the response was YES. [2021-10-28 22:54:40,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 827 conditions, 339 events. 44/339 cut-off events. For 526/569 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1805 event pairs, 6 based on Foata normal form. 31/364 useless extension candidates. Maximal degree in co-relation 805. Up to 35 conditions per place. [2021-10-28 22:54:40,570 INFO L132 encePairwiseOnDemand]: 78/90 looper letters, 0 selfloop transitions, 0 changer transitions 102/102 dead transitions. [2021-10-28 22:54:40,570 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 102 transitions, 552 flow [2021-10-28 22:54:40,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 22:54:40,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 22:54:40,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 779 transitions. [2021-10-28 22:54:40,574 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7868686868686868 [2021-10-28 22:54:40,575 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 779 transitions. [2021-10-28 22:54:40,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 779 transitions. [2021-10-28 22:54:40,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:54:40,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 779 transitions. [2021-10-28 22:54:40,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 70.81818181818181) internal successors, (779), 11 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:40,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:40,584 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:40,584 INFO L186 Difference]: Start difference. First operand has 114 places, 100 transitions, 464 flow. Second operand 11 states and 779 transitions. [2021-10-28 22:54:40,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 102 transitions, 552 flow [2021-10-28 22:54:40,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 102 transitions, 539 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-10-28 22:54:40,592 INFO L242 Difference]: Finished difference. Result has 116 places, 0 transitions, 0 flow [2021-10-28 22:54:40,592 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=116, PETRI_TRANSITIONS=0} [2021-10-28 22:54:40,592 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 35 predicate places. [2021-10-28 22:54:40,593 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 0 transitions, 0 flow [2021-10-28 22:54:40,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 70.5) internal successors, (846), 12 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:40,597 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:54:40,598 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 22:54:40,598 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 22:54:40,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 22:54:40,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:54:40,826 INFO L731 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1] [2021-10-28 22:54:40,829 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 22:54:40,829 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 22:54:40,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 10:54:40 BasicIcfg [2021-10-28 22:54:40,832 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 22:54:40,832 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:54:40,832 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:54:40,833 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:54:40,833 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:54:32" (3/4) ... [2021-10-28 22:54:40,837 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 22:54:40,844 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-28 22:54:40,845 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-28 22:54:40,855 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-28 22:54:40,856 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 22:54:40,856 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 22:54:40,862 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 22:54:40,905 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 22:54:40,905 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:54:40,907 INFO L168 Benchmark]: Toolchain (without parser) took 9437.22 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 73.5 MB in the beginning and 47.5 MB in the end (delta: 26.0 MB). Peak memory consumption was 53.2 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:40,908 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 109.1 MB. Free memory was 81.0 MB in the beginning and 81.0 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:54:40,908 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.25 ms. Allocated memory is still 109.1 MB. Free memory was 73.2 MB in the beginning and 83.2 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:40,909 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.77 ms. Allocated memory is still 109.1 MB. Free memory was 83.2 MB in the beginning and 81.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:40,909 INFO L168 Benchmark]: Boogie Preprocessor took 32.55 ms. Allocated memory is still 109.1 MB. Free memory was 81.1 MB in the beginning and 80.5 MB in the end (delta: 628.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:54:40,910 INFO L168 Benchmark]: RCFGBuilder took 530.98 ms. Allocated memory is still 109.1 MB. Free memory was 79.9 MB in the beginning and 67.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:40,910 INFO L168 Benchmark]: TraceAbstraction took 8419.51 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 67.1 MB in the beginning and 49.5 MB in the end (delta: 17.5 MB). Peak memory consumption was 47.8 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:40,911 INFO L168 Benchmark]: Witness Printer took 73.18 ms. Allocated memory is still 136.3 MB. Free memory was 49.5 MB in the beginning and 47.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:40,914 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 109.1 MB. Free memory was 81.0 MB in the beginning and 81.0 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 328.25 ms. Allocated memory is still 109.1 MB. Free memory was 73.2 MB in the beginning and 83.2 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.77 ms. Allocated memory is still 109.1 MB. Free memory was 83.2 MB in the beginning and 81.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.55 ms. Allocated memory is still 109.1 MB. Free memory was 81.1 MB in the beginning and 80.5 MB in the end (delta: 628.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 530.98 ms. Allocated memory is still 109.1 MB. Free memory was 79.9 MB in the beginning and 67.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8419.51 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 67.1 MB in the beginning and 49.5 MB in the end (delta: 17.5 MB). Peak memory consumption was 47.8 MB. Max. memory is 16.1 GB. * Witness Printer took 73.18 ms. Allocated memory is still 136.3 MB. Free memory was 49.5 MB in the beginning and 47.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 87]: 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 5 procedures, 111 locations, 3 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: 8.1s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 92 SDtfs, 150 SDslu, 78 SDs, 0 SdLazy, 507 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 308 GetRequests, 236 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=464occurred in iteration=8, InterpolantAutomatonStates: 65, 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: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 816 NumberOfCodeBlocks, 816 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 804 ConstructedInterpolants, 0 QuantifiedInterpolants, 4201 SizeOfPredicates, 18 NumberOfNonLiveVariables, 483 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 8/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 22:54:40,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9964ce8-7262-40e4-8994-3d8151734288/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...