./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe032_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dcb8a-5e32-410e-969e-aa1ca0e56a4a/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dcb8a-5e32-410e-969e-aa1ca0e56a4a/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dcb8a-5e32-410e-969e-aa1ca0e56a4a/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dcb8a-5e32-410e-969e-aa1ca0e56a4a/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe032_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dcb8a-5e32-410e-969e-aa1ca0e56a4a/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dcb8a-5e32-410e-969e-aa1ca0e56a4a/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ffff09405c16ea86880fae0b9b6268edfa5ef4b2d03cee31a9e4f2e1ac044811 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:02:46,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:02:46,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:02:46,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:02:46,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:02:46,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:02:46,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:02:46,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:02:46,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:02:46,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:02:46,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:02:46,902 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:02:46,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:02:46,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:02:46,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:02:46,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:02:46,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:02:46,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:02:46,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:02:46,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:02:46,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:02:46,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:02:46,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:02:46,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:02:46,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:02:46,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:02:46,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:02:46,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:02:46,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:02:46,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:02:46,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:02:46,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:02:46,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:02:46,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:02:46,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:02:46,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:02:46,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:02:46,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:02:46,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:02:46,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:02:46,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:02:46,955 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dcb8a-5e32-410e-969e-aa1ca0e56a4a/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:02:46,980 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:02:46,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:02:46,981 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:02:46,981 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:02:46,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:02:46,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:02:46,983 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:02:46,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:02:46,984 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:02:46,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:02:46,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:02:46,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:02:46,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:02:46,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:02:46,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:02:46,985 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:02:46,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:02:46,986 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:02:46,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:02:46,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:02:46,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:02:46,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:02:46,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:02:46,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:02:46,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:02:46,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:02:46,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:02:46,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:02:46,988 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:02:46,989 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:02:46,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:02:46,989 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:02:46,989 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_7a4dcb8a-5e32-410e-969e-aa1ca0e56a4a/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dcb8a-5e32-410e-969e-aa1ca0e56a4a/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ffff09405c16ea86880fae0b9b6268edfa5ef4b2d03cee31a9e4f2e1ac044811 [2021-10-21 19:02:47,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:02:47,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:02:47,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:02:47,316 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:02:47,317 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:02:47,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dcb8a-5e32-410e-969e-aa1ca0e56a4a/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/pthread-wmm/safe032_tso.i [2021-10-21 19:02:47,419 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dcb8a-5e32-410e-969e-aa1ca0e56a4a/bin/uautomizer-j4sWxH34Be/data/e739acd60/5681e8b05001400dad2d00e595cbbd07/FLAGa8525f902 [2021-10-21 19:02:48,018 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:02:48,019 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dcb8a-5e32-410e-969e-aa1ca0e56a4a/sv-benchmarks/c/pthread-wmm/safe032_tso.i [2021-10-21 19:02:48,045 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dcb8a-5e32-410e-969e-aa1ca0e56a4a/bin/uautomizer-j4sWxH34Be/data/e739acd60/5681e8b05001400dad2d00e595cbbd07/FLAGa8525f902 [2021-10-21 19:02:48,330 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dcb8a-5e32-410e-969e-aa1ca0e56a4a/bin/uautomizer-j4sWxH34Be/data/e739acd60/5681e8b05001400dad2d00e595cbbd07 [2021-10-21 19:02:48,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:02:48,334 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:02:48,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:02:48,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:02:48,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:02:48,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:02:48" (1/1) ... [2021-10-21 19:02:48,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35976201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:48, skipping insertion in model container [2021-10-21 19:02:48,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:02:48" (1/1) ... [2021-10-21 19:02:48,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:02:48,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:02:48,566 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_7a4dcb8a-5e32-410e-969e-aa1ca0e56a4a/sv-benchmarks/c/pthread-wmm/safe032_tso.i[945,958] [2021-10-21 19:02:48,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:02:48,751 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:02:48,771 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_7a4dcb8a-5e32-410e-969e-aa1ca0e56a4a/sv-benchmarks/c/pthread-wmm/safe032_tso.i[945,958] [2021-10-21 19:02:48,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:02:48,869 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:02:48,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:48 WrapperNode [2021-10-21 19:02:48,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:02:48,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:02:48,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:02:48,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:02:48,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:48" (1/1) ... [2021-10-21 19:02:48,893 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:48" (1/1) ... [2021-10-21 19:02:48,914 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:02:48,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:02:48,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:02:48,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:02:48,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:48" (1/1) ... [2021-10-21 19:02:48,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:48" (1/1) ... [2021-10-21 19:02:48,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:48" (1/1) ... [2021-10-21 19:02:48,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:48" (1/1) ... [2021-10-21 19:02:48,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:48" (1/1) ... [2021-10-21 19:02:48,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:48" (1/1) ... [2021-10-21 19:02:48,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:48" (1/1) ... [2021-10-21 19:02:48,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:02:48,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:02:48,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:02:48,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:02:48,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:48" (1/1) ... [2021-10-21 19:02:48,949 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:02:48,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dcb8a-5e32-410e-969e-aa1ca0e56a4a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:02:48,996 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dcb8a-5e32-410e-969e-aa1ca0e56a4a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:02:49,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dcb8a-5e32-410e-969e-aa1ca0e56a4a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:02:49,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:02:49,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-21 19:02:49,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:02:49,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:02:49,041 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-21 19:02:49,041 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-21 19:02:49,041 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-21 19:02:49,041 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-21 19:02:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-21 19:02:49,042 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-21 19:02:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:02:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-21 19:02:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:02:49,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:02:49,044 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-21 19:02:49,399 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:02:49,401 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-21 19:02:49,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:02:49 BoogieIcfgContainer [2021-10-21 19:02:49,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:02:49,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:02:49,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:02:49,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:02:49,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:02:48" (1/3) ... [2021-10-21 19:02:49,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f68369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:02:49, skipping insertion in model container [2021-10-21 19:02:49,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:02:48" (2/3) ... [2021-10-21 19:02:49,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f68369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:02:49, skipping insertion in model container [2021-10-21 19:02:49,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:02:49" (3/3) ... [2021-10-21 19:02:49,417 INFO L111 eAbstractionObserver]: Analyzing ICFG safe032_tso.i [2021-10-21 19:02:49,423 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-21 19:02:49,423 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:02:49,424 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:02:49,424 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-21 19:02:49,481 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,482 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,482 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,482 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,482 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,483 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,483 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,483 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,483 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,484 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,484 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,484 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,485 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,485 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,498 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,499 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,499 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,499 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,499 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,499 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,500 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,500 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,500 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,500 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,501 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,501 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,501 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,501 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,501 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,501 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,502 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,502 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,502 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,502 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,503 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,506 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,506 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,506 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,506 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,511 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,511 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,512 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,512 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,514 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,514 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,514 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,515 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:02:49,517 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-21 19:02:49,567 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:02:49,573 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:02:49,573 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-21 19:02:49,585 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2021-10-21 19:02:49,636 INFO L129 PetriNetUnfolder]: 2/80 cut-off events. [2021-10-21 19:02:49,636 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 19:02:49,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-10-21 19:02:49,640 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 83 transitions, 181 flow [2021-10-21 19:02:49,645 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 145 flow [2021-10-21 19:02:49,668 INFO L129 PetriNetUnfolder]: 1/67 cut-off events. [2021-10-21 19:02:49,669 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 19:02:49,669 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:02:49,670 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] [2021-10-21 19:02:49,670 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:02:49,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:02:49,676 INFO L82 PathProgramCache]: Analyzing trace with hash 2015526074, now seen corresponding path program 1 times [2021-10-21 19:02:49,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:02:49,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904584274] [2021-10-21 19:02:49,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:02:49,687 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:02:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:02:50,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:02:50,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:02:50,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904584274] [2021-10-21 19:02:50,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904584274] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:02:50,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:02:50,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:02:50,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358977113] [2021-10-21 19:02:50,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:02:50,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:02:50,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:02:50,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:02:50,164 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 83 [2021-10-21 19:02:50,169 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 145 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:50,169 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:02:50,169 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 83 [2021-10-21 19:02:50,170 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:02:50,353 INFO L129 PetriNetUnfolder]: 3/87 cut-off events. [2021-10-21 19:02:50,356 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 19:02:50,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 87 events. 3/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 109 event pairs, 0 based on Foata normal form. 4/90 useless extension candidates. Maximal degree in co-relation 87. Up to 7 conditions per place. [2021-10-21 19:02:50,359 INFO L132 encePairwiseOnDemand]: 76/83 looper letters, 6 selfloop transitions, 2 changer transitions 11/77 dead transitions. [2021-10-21 19:02:50,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 77 transitions, 199 flow [2021-10-21 19:02:50,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:02:50,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-21 19:02:50,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 661 transitions. [2021-10-21 19:02:50,382 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8848728246318608 [2021-10-21 19:02:50,383 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 661 transitions. [2021-10-21 19:02:50,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 661 transitions. [2021-10-21 19:02:50,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:02:50,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 661 transitions. [2021-10-21 19:02:50,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.44444444444444) internal successors, (661), 9 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:50,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:50,413 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:50,415 INFO L186 Difference]: Start difference. First operand has 77 places, 68 transitions, 145 flow. Second operand 9 states and 661 transitions. [2021-10-21 19:02:50,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 77 transitions, 199 flow [2021-10-21 19:02:50,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 77 transitions, 196 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-21 19:02:50,425 INFO L242 Difference]: Finished difference. Result has 89 places, 66 transitions, 158 flow [2021-10-21 19:02:50,427 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=158, PETRI_PLACES=89, PETRI_TRANSITIONS=66} [2021-10-21 19:02:50,428 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 12 predicate places. [2021-10-21 19:02:50,428 INFO L470 AbstractCegarLoop]: Abstraction has has 89 places, 66 transitions, 158 flow [2021-10-21 19:02:50,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:50,429 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:02:50,429 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:02:50,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:02:50,430 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:02:50,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:02:50,430 INFO L82 PathProgramCache]: Analyzing trace with hash -54307189, now seen corresponding path program 1 times [2021-10-21 19:02:50,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:02:50,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545753713] [2021-10-21 19:02:50,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:02:50,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:02:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:02:50,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:02:50,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:02:50,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545753713] [2021-10-21 19:02:50,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545753713] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:02:50,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:02:50,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:02:50,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083148088] [2021-10-21 19:02:50,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:02:50,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:02:50,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:02:50,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:02:50,702 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2021-10-21 19:02:50,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 66 transitions, 158 flow. Second operand has 7 states, 7 states have (on average 64.71428571428571) internal successors, (453), 7 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:50,704 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:02:50,704 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2021-10-21 19:02:50,704 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:02:51,109 INFO L129 PetriNetUnfolder]: 147/441 cut-off events. [2021-10-21 19:02:51,110 INFO L130 PetriNetUnfolder]: For 124/240 co-relation queries the response was YES. [2021-10-21 19:02:51,117 INFO L84 FinitePrefix]: Finished finitePrefix Result has 877 conditions, 441 events. 147/441 cut-off events. For 124/240 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2128 event pairs, 7 based on Foata normal form. 13/441 useless extension candidates. Maximal degree in co-relation 838. Up to 104 conditions per place. [2021-10-21 19:02:51,120 INFO L132 encePairwiseOnDemand]: 71/83 looper letters, 20 selfloop transitions, 10 changer transitions 41/121 dead transitions. [2021-10-21 19:02:51,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 121 transitions, 456 flow [2021-10-21 19:02:51,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:02:51,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-21 19:02:51,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 893 transitions. [2021-10-21 19:02:51,131 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8276181649675626 [2021-10-21 19:02:51,132 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 893 transitions. [2021-10-21 19:02:51,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 893 transitions. [2021-10-21 19:02:51,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:02:51,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 893 transitions. [2021-10-21 19:02:51,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 68.6923076923077) internal successors, (893), 13 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:51,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:51,141 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:51,141 INFO L186 Difference]: Start difference. First operand has 89 places, 66 transitions, 158 flow. Second operand 13 states and 893 transitions. [2021-10-21 19:02:51,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 121 transitions, 456 flow [2021-10-21 19:02:51,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 121 transitions, 400 flow, removed 24 selfloop flow, removed 8 redundant places. [2021-10-21 19:02:51,155 INFO L242 Difference]: Finished difference. Result has 98 places, 73 transitions, 241 flow [2021-10-21 19:02:51,156 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=241, PETRI_PLACES=98, PETRI_TRANSITIONS=73} [2021-10-21 19:02:51,156 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 21 predicate places. [2021-10-21 19:02:51,156 INFO L470 AbstractCegarLoop]: Abstraction has has 98 places, 73 transitions, 241 flow [2021-10-21 19:02:51,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.71428571428571) internal successors, (453), 7 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:51,157 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:02:51,157 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:02:51,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:02:51,158 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:02:51,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:02:51,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1865662196, now seen corresponding path program 1 times [2021-10-21 19:02:51,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:02:51,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389029929] [2021-10-21 19:02:51,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:02:51,159 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:02:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:02:51,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:02:51,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:02:51,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389029929] [2021-10-21 19:02:51,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389029929] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:02:51,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:02:51,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:02:51,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979649572] [2021-10-21 19:02:51,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:02:51,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:02:51,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:02:51,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:02:51,329 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2021-10-21 19:02:51,330 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 73 transitions, 241 flow. Second operand has 7 states, 7 states have (on average 64.85714285714286) internal successors, (454), 7 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:51,330 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:02:51,330 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2021-10-21 19:02:51,330 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:02:51,653 INFO L129 PetriNetUnfolder]: 119/453 cut-off events. [2021-10-21 19:02:51,654 INFO L130 PetriNetUnfolder]: For 718/1577 co-relation queries the response was YES. [2021-10-21 19:02:51,657 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1286 conditions, 453 events. 119/453 cut-off events. For 718/1577 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2418 event pairs, 0 based on Foata normal form. 16/461 useless extension candidates. Maximal degree in co-relation 1239. Up to 124 conditions per place. [2021-10-21 19:02:51,661 INFO L132 encePairwiseOnDemand]: 72/83 looper letters, 23 selfloop transitions, 11 changer transitions 49/133 dead transitions. [2021-10-21 19:02:51,661 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 133 transitions, 802 flow [2021-10-21 19:02:51,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:02:51,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-21 19:02:51,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 884 transitions. [2021-10-21 19:02:51,675 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8192771084337349 [2021-10-21 19:02:51,675 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 884 transitions. [2021-10-21 19:02:51,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 884 transitions. [2021-10-21 19:02:51,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:02:51,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 884 transitions. [2021-10-21 19:02:51,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 68.0) internal successors, (884), 13 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:51,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:51,684 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:51,684 INFO L186 Difference]: Start difference. First operand has 98 places, 73 transitions, 241 flow. Second operand 13 states and 884 transitions. [2021-10-21 19:02:51,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 133 transitions, 802 flow [2021-10-21 19:02:51,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 133 transitions, 766 flow, removed 18 selfloop flow, removed 3 redundant places. [2021-10-21 19:02:51,694 INFO L242 Difference]: Finished difference. Result has 110 places, 77 transitions, 336 flow [2021-10-21 19:02:51,694 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=336, PETRI_PLACES=110, PETRI_TRANSITIONS=77} [2021-10-21 19:02:51,695 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 33 predicate places. [2021-10-21 19:02:51,695 INFO L470 AbstractCegarLoop]: Abstraction has has 110 places, 77 transitions, 336 flow [2021-10-21 19:02:51,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.85714285714286) internal successors, (454), 7 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:51,695 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:02:51,696 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:02:51,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:02:51,696 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:02:51,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:02:51,697 INFO L82 PathProgramCache]: Analyzing trace with hash 325297355, now seen corresponding path program 1 times [2021-10-21 19:02:51,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:02:51,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537173388] [2021-10-21 19:02:51,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:02:51,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:02:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:02:51,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:02:51,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:02:51,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537173388] [2021-10-21 19:02:51,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537173388] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:02:51,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:02:51,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:02:51,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922423621] [2021-10-21 19:02:51,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:02:51,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:02:51,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:02:51,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:02:51,822 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 83 [2021-10-21 19:02:51,823 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 77 transitions, 336 flow. Second operand has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:51,823 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:02:51,823 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 83 [2021-10-21 19:02:51,823 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:02:51,972 INFO L129 PetriNetUnfolder]: 47/245 cut-off events. [2021-10-21 19:02:51,972 INFO L130 PetriNetUnfolder]: For 933/1337 co-relation queries the response was YES. [2021-10-21 19:02:51,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 245 events. 47/245 cut-off events. For 933/1337 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1045 event pairs, 7 based on Foata normal form. 14/253 useless extension candidates. Maximal degree in co-relation 783. Up to 66 conditions per place. [2021-10-21 19:02:51,976 INFO L132 encePairwiseOnDemand]: 77/83 looper letters, 17 selfloop transitions, 2 changer transitions 15/92 dead transitions. [2021-10-21 19:02:51,976 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 92 transitions, 545 flow [2021-10-21 19:02:51,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:02:51,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-21 19:02:51,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 492 transitions. [2021-10-21 19:02:51,979 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.846815834767642 [2021-10-21 19:02:51,979 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 492 transitions. [2021-10-21 19:02:51,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 492 transitions. [2021-10-21 19:02:51,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:02:51,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 492 transitions. [2021-10-21 19:02:51,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:51,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:51,985 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:51,985 INFO L186 Difference]: Start difference. First operand has 110 places, 77 transitions, 336 flow. Second operand 7 states and 492 transitions. [2021-10-21 19:02:51,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 92 transitions, 545 flow [2021-10-21 19:02:51,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 92 transitions, 501 flow, removed 22 selfloop flow, removed 9 redundant places. [2021-10-21 19:02:51,998 INFO L242 Difference]: Finished difference. Result has 103 places, 75 transitions, 307 flow [2021-10-21 19:02:51,999 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=307, PETRI_PLACES=103, PETRI_TRANSITIONS=75} [2021-10-21 19:02:51,999 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 26 predicate places. [2021-10-21 19:02:51,999 INFO L470 AbstractCegarLoop]: Abstraction has has 103 places, 75 transitions, 307 flow [2021-10-21 19:02:52,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:52,000 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:02:52,000 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:02:52,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:02:52,001 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:02:52,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:02:52,001 INFO L82 PathProgramCache]: Analyzing trace with hash 789221355, now seen corresponding path program 2 times [2021-10-21 19:02:52,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:02:52,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445658392] [2021-10-21 19:02:52,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:02:52,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:02:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:02:52,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:02:52,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:02:52,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445658392] [2021-10-21 19:02:52,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445658392] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:02:52,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:02:52,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:02:52,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416774998] [2021-10-21 19:02:52,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:02:52,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:02:52,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:02:52,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:02:52,174 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-10-21 19:02:52,175 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 75 transitions, 307 flow. Second operand has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:52,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:02:52,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-10-21 19:02:52,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:02:52,402 INFO L129 PetriNetUnfolder]: 217/670 cut-off events. [2021-10-21 19:02:52,402 INFO L130 PetriNetUnfolder]: For 406/507 co-relation queries the response was YES. [2021-10-21 19:02:52,407 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1410 conditions, 670 events. 217/670 cut-off events. For 406/507 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4701 event pairs, 6 based on Foata normal form. 24/647 useless extension candidates. Maximal degree in co-relation 1375. Up to 200 conditions per place. [2021-10-21 19:02:52,411 INFO L132 encePairwiseOnDemand]: 74/83 looper letters, 19 selfloop transitions, 16 changer transitions 0/100 dead transitions. [2021-10-21 19:02:52,411 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 100 transitions, 427 flow [2021-10-21 19:02:52,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:02:52,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-21 19:02:52,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 658 transitions. [2021-10-21 19:02:52,414 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8808567603748326 [2021-10-21 19:02:52,414 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 658 transitions. [2021-10-21 19:02:52,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 658 transitions. [2021-10-21 19:02:52,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:02:52,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 658 transitions. [2021-10-21 19:02:52,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.11111111111111) internal successors, (658), 9 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:52,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:52,420 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:52,420 INFO L186 Difference]: Start difference. First operand has 103 places, 75 transitions, 307 flow. Second operand 9 states and 658 transitions. [2021-10-21 19:02:52,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 100 transitions, 427 flow [2021-10-21 19:02:52,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 100 transitions, 411 flow, removed 7 selfloop flow, removed 8 redundant places. [2021-10-21 19:02:52,427 INFO L242 Difference]: Finished difference. Result has 104 places, 89 transitions, 402 flow [2021-10-21 19:02:52,427 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=402, PETRI_PLACES=104, PETRI_TRANSITIONS=89} [2021-10-21 19:02:52,427 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 27 predicate places. [2021-10-21 19:02:52,428 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 89 transitions, 402 flow [2021-10-21 19:02:52,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:52,428 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:02:52,428 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] [2021-10-21 19:02:52,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:02:52,429 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:02:52,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:02:52,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1872301092, now seen corresponding path program 1 times [2021-10-21 19:02:52,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:02:52,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137305050] [2021-10-21 19:02:52,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:02:52,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:02:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:02:52,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:02:52,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:02:52,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137305050] [2021-10-21 19:02:52,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137305050] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:02:52,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:02:52,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:02:52,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262607999] [2021-10-21 19:02:52,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:02:52,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:02:52,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:02:52,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:02:52,521 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-10-21 19:02:52,522 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 89 transitions, 402 flow. Second operand has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:52,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:02:52,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-10-21 19:02:52,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:02:52,758 INFO L129 PetriNetUnfolder]: 196/623 cut-off events. [2021-10-21 19:02:52,758 INFO L130 PetriNetUnfolder]: For 1346/1783 co-relation queries the response was YES. [2021-10-21 19:02:52,764 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2049 conditions, 623 events. 196/623 cut-off events. For 1346/1783 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 4553 event pairs, 0 based on Foata normal form. 113/693 useless extension candidates. Maximal degree in co-relation 2004. Up to 196 conditions per place. [2021-10-21 19:02:52,768 INFO L132 encePairwiseOnDemand]: 74/83 looper letters, 11 selfloop transitions, 31 changer transitions 10/117 dead transitions. [2021-10-21 19:02:52,768 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 117 transitions, 687 flow [2021-10-21 19:02:52,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:02:52,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-21 19:02:52,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 878 transitions. [2021-10-21 19:02:52,772 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8815261044176707 [2021-10-21 19:02:52,772 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 878 transitions. [2021-10-21 19:02:52,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 878 transitions. [2021-10-21 19:02:52,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:02:52,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 878 transitions. [2021-10-21 19:02:52,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 73.16666666666667) internal successors, (878), 12 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:52,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 83.0) internal successors, (1079), 13 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:52,779 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 83.0) internal successors, (1079), 13 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:52,780 INFO L186 Difference]: Start difference. First operand has 104 places, 89 transitions, 402 flow. Second operand 12 states and 878 transitions. [2021-10-21 19:02:52,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 117 transitions, 687 flow [2021-10-21 19:02:52,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 117 transitions, 673 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-10-21 19:02:52,791 INFO L242 Difference]: Finished difference. Result has 116 places, 104 transitions, 578 flow [2021-10-21 19:02:52,791 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=578, PETRI_PLACES=116, PETRI_TRANSITIONS=104} [2021-10-21 19:02:52,791 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 39 predicate places. [2021-10-21 19:02:52,791 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 104 transitions, 578 flow [2021-10-21 19:02:52,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:52,792 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:02:52,792 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] [2021-10-21 19:02:52,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:02:52,793 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:02:52,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:02:52,793 INFO L82 PathProgramCache]: Analyzing trace with hash 512694551, now seen corresponding path program 1 times [2021-10-21 19:02:52,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:02:52,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964276804] [2021-10-21 19:02:52,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:02:52,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:02:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:02:52,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:02:52,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:02:52,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964276804] [2021-10-21 19:02:52,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964276804] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:02:52,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:02:52,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 19:02:52,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974060813] [2021-10-21 19:02:52,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:02:52,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:02:52,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:02:52,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:02:52,894 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-10-21 19:02:52,894 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 104 transitions, 578 flow. Second operand has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:52,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:02:52,895 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-10-21 19:02:52,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:02:53,183 INFO L129 PetriNetUnfolder]: 163/552 cut-off events. [2021-10-21 19:02:53,183 INFO L130 PetriNetUnfolder]: For 1896/2422 co-relation queries the response was YES. [2021-10-21 19:02:53,189 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2129 conditions, 552 events. 163/552 cut-off events. For 1896/2422 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4125 event pairs, 0 based on Foata normal form. 105/614 useless extension candidates. Maximal degree in co-relation 2087. Up to 160 conditions per place. [2021-10-21 19:02:53,190 INFO L132 encePairwiseOnDemand]: 75/83 looper letters, 0 selfloop transitions, 0 changer transitions 106/106 dead transitions. [2021-10-21 19:02:53,190 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 106 transitions, 702 flow [2021-10-21 19:02:53,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 19:02:53,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-21 19:02:53,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1078 transitions. [2021-10-21 19:02:53,195 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8658634538152611 [2021-10-21 19:02:53,195 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1078 transitions. [2021-10-21 19:02:53,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1078 transitions. [2021-10-21 19:02:53,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:02:53,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1078 transitions. [2021-10-21 19:02:53,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 71.86666666666666) internal successors, (1078), 15 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:53,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 83.0) internal successors, (1328), 16 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:53,204 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 83.0) internal successors, (1328), 16 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:53,204 INFO L186 Difference]: Start difference. First operand has 116 places, 104 transitions, 578 flow. Second operand 15 states and 1078 transitions. [2021-10-21 19:02:53,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 106 transitions, 702 flow [2021-10-21 19:02:53,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 106 transitions, 543 flow, removed 52 selfloop flow, removed 15 redundant places. [2021-10-21 19:02:53,226 INFO L242 Difference]: Finished difference. Result has 108 places, 0 transitions, 0 flow [2021-10-21 19:02:53,226 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=108, PETRI_TRANSITIONS=0} [2021-10-21 19:02:53,226 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 31 predicate places. [2021-10-21 19:02:53,227 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 0 transitions, 0 flow [2021-10-21 19:02:53,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:02:53,229 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:02:53,230 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-21 19:02:53,230 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-21 19:02:53,230 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-21 19:02:53,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 19:02:53,236 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-21 19:02:53,236 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:02:53,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:02:53 BasicIcfg [2021-10-21 19:02:53,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:02:53,239 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:02:53,239 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:02:53,239 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:02:53,240 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:02:49" (3/4) ... [2021-10-21 19:02:53,243 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:02:53,249 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-21 19:02:53,249 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-21 19:02:53,249 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-21 19:02:53,253 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-21 19:02:53,254 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 19:02:53,254 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:02:53,254 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:02:53,288 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dcb8a-5e32-410e-969e-aa1ca0e56a4a/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:02:53,288 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:02:53,290 INFO L168 Benchmark]: Toolchain (without parser) took 4955.22 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 65.6 MB in the beginning and 74.8 MB in the end (delta: -9.2 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:02:53,290 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory is still 53.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:02:53,291 INFO L168 Benchmark]: CACSL2BoogieTranslator took 534.72 ms. Allocated memory is still 98.6 MB. Free memory was 65.4 MB in the beginning and 64.8 MB in the end (delta: 590.4 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:02:53,291 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.85 ms. Allocated memory is still 98.6 MB. Free memory was 64.8 MB in the beginning and 62.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:02:53,292 INFO L168 Benchmark]: Boogie Preprocessor took 25.25 ms. Allocated memory is still 98.6 MB. Free memory was 62.7 MB in the beginning and 61.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:02:53,292 INFO L168 Benchmark]: RCFGBuilder took 463.76 ms. Allocated memory is still 98.6 MB. Free memory was 61.3 MB in the beginning and 49.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:02:53,293 INFO L168 Benchmark]: TraceAbstraction took 3831.84 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 49.1 MB in the beginning and 78.0 MB in the end (delta: -28.9 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:02:53,293 INFO L168 Benchmark]: Witness Printer took 49.38 ms. Allocated memory is still 144.7 MB. Free memory was 78.0 MB in the beginning and 74.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:02:53,295 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory is still 53.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 534.72 ms. Allocated memory is still 98.6 MB. Free memory was 65.4 MB in the beginning and 64.8 MB in the end (delta: 590.4 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.85 ms. Allocated memory is still 98.6 MB. Free memory was 64.8 MB in the beginning and 62.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.25 ms. Allocated memory is still 98.6 MB. Free memory was 62.7 MB in the beginning and 61.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 463.76 ms. Allocated memory is still 98.6 MB. Free memory was 61.3 MB in the beginning and 49.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3831.84 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 49.1 MB in the beginning and 78.0 MB in the end (delta: -28.9 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. * Witness Printer took 49.38 ms. Allocated memory is still 144.7 MB. Free memory was 78.0 MB in the beginning and 74.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 23.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3672.4ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2145.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 71.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 77 SDtfs, 199 SDslu, 261 SDs, 0 SdLazy, 340 SolverSat, 91 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 288.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 887.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=578occurred in iteration=6, InterpolantAutomatonStates: 78, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 38.0ms SsaConstructionTime, 188.3ms SatisfiabilityAnalysisTime, 997.9ms InterpolantComputationTime, 376 NumberOfCodeBlocks, 376 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 369 ConstructedInterpolants, 0 QuantifiedInterpolants, 1413 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-21 19:02:53,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4dcb8a-5e32-410e-969e-aa1ca0e56a4a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...