./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/config/GemCutterReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c80601716e9c0111d78d12f0a88108c91b0aa7215f8e775685e33490f22c8502 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 23:03:08,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 23:03:08,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 23:03:08,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 23:03:08,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 23:03:08,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 23:03:08,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 23:03:08,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 23:03:08,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 23:03:08,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 23:03:08,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 23:03:08,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 23:03:08,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 23:03:08,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 23:03:08,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 23:03:08,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 23:03:08,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 23:03:08,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 23:03:08,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 23:03:08,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 23:03:08,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 23:03:08,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 23:03:08,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 23:03:08,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 23:03:08,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 23:03:08,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 23:03:08,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 23:03:08,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 23:03:08,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 23:03:08,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 23:03:08,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 23:03:08,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 23:03:08,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 23:03:08,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 23:03:09,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 23:03:09,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 23:03:09,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 23:03:09,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 23:03:09,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 23:03:09,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 23:03:09,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 23:03:09,007 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/config/svcomp-Reach-32bit-GemCutter_Default.epf [2021-11-22 23:03:09,046 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 23:03:09,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 23:03:09,047 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 23:03:09,048 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 23:03:09,054 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-22 23:03:09,055 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-22 23:03:09,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 23:03:09,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 23:03:09,056 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 23:03:09,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 23:03:09,056 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 23:03:09,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 23:03:09,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 23:03:09,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 23:03:09,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 23:03:09,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 23:03:09,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 23:03:09,057 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 23:03:09,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 23:03:09,058 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 23:03:09,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 23:03:09,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 23:03:09,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 23:03:09,058 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-11-22 23:03:09,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 23:03:09,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 23:03:09,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 23:03:09,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 23:03:09,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 23:03:09,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 23:03:09,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 23:03:09,060 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 23:03:09,060 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-11-22 23:03:09,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 23:03:09,060 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2021-11-22 23:03:09,061 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-11-22 23:03:09,061 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_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c80601716e9c0111d78d12f0a88108c91b0aa7215f8e775685e33490f22c8502 [2021-11-22 23:03:09,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 23:03:09,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 23:03:09,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 23:03:09,342 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 23:03:09,343 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 23:03:09,345 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/../../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2021-11-22 23:03:09,422 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/data/10f4e84ba/af1da7f639a449c0abaf5863780ea1a5/FLAG00eefc5a7 [2021-11-22 23:03:09,866 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 23:03:09,867 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2021-11-22 23:03:09,874 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/data/10f4e84ba/af1da7f639a449c0abaf5863780ea1a5/FLAG00eefc5a7 [2021-11-22 23:03:10,241 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/data/10f4e84ba/af1da7f639a449c0abaf5863780ea1a5 [2021-11-22 23:03:10,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 23:03:10,245 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 23:03:10,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 23:03:10,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 23:03:10,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 23:03:10,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:03:10" (1/1) ... [2021-11-22 23:03:10,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2131517b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:10, skipping insertion in model container [2021-11-22 23:03:10,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:03:10" (1/1) ... [2021-11-22 23:03:10,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 23:03:10,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 23:03:10,481 WARN L230 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_f34705d2-2590-4b7e-a43a-a05924ae032b/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c[2870,2883] [2021-11-22 23:03:10,489 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 23:03:10,497 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 23:03:10,519 WARN L230 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_f34705d2-2590-4b7e-a43a-a05924ae032b/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c[2870,2883] [2021-11-22 23:03:10,523 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 23:03:10,538 INFO L208 MainTranslator]: Completed translation [2021-11-22 23:03:10,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:10 WrapperNode [2021-11-22 23:03:10,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 23:03:10,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 23:03:10,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 23:03:10,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 23:03:10,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:10" (1/1) ... [2021-11-22 23:03:10,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:10" (1/1) ... [2021-11-22 23:03:10,581 INFO L137 Inliner]: procedures = 25, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 163 [2021-11-22 23:03:10,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 23:03:10,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 23:03:10,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 23:03:10,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 23:03:10,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:10" (1/1) ... [2021-11-22 23:03:10,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:10" (1/1) ... [2021-11-22 23:03:10,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:10" (1/1) ... [2021-11-22 23:03:10,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:10" (1/1) ... [2021-11-22 23:03:10,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:10" (1/1) ... [2021-11-22 23:03:10,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:10" (1/1) ... [2021-11-22 23:03:10,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:10" (1/1) ... [2021-11-22 23:03:10,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 23:03:10,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 23:03:10,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 23:03:10,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 23:03:10,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:10" (1/1) ... [2021-11-22 23:03:10,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 23:03:10,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 [2021-11-22 23:03:10,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 23:03:10,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 23:03:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 23:03:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 23:03:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 23:03:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 23:03:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-22 23:03:10,716 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-22 23:03:10,716 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-22 23:03:10,716 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-22 23:03:10,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 23:03:10,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-22 23:03:10,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-22 23:03:10,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 23:03:10,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 23:03:10,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 23:03:10,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 23:03:10,718 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-22 23:03:10,801 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 23:03:10,803 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 23:03:11,113 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 23:03:11,202 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 23:03:11,202 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-22 23:03:11,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:03:11 BoogieIcfgContainer [2021-11-22 23:03:11,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 23:03:11,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 23:03:11,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 23:03:11,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 23:03:11,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:03:10" (1/3) ... [2021-11-22 23:03:11,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52909246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:03:11, skipping insertion in model container [2021-11-22 23:03:11,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:10" (2/3) ... [2021-11-22 23:03:11,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52909246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:03:11, skipping insertion in model container [2021-11-22 23:03:11,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:03:11" (3/3) ... [2021-11-22 23:03:11,219 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2021-11-22 23:03:11,225 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-22 23:03:11,225 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 23:03:11,225 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 23:03:11,226 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-22 23:03:11,257 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,258 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,258 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,258 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,259 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,259 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,259 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,259 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,259 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,260 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,260 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,260 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,260 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,260 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,261 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,261 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,261 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,261 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,262 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,262 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,262 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,262 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,263 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,263 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,264 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,264 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,264 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,265 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,265 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,265 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,265 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,266 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,266 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,266 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,266 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,266 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,267 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,267 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,267 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,268 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,268 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,268 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,268 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,268 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,269 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,269 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,269 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,269 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,269 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,271 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,271 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,274 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,274 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,274 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,275 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,275 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,275 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,286 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,289 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,289 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,289 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,290 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,290 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,290 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,290 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,290 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,290 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,291 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,292 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,292 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,293 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,293 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,293 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,293 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,293 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 23:03:11,296 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-22 23:03:11,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-22 23:03:11,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 [2021-11-22 23:03:11,361 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-22 23:03:11,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2021-11-22 23:03:11,391 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-11-22 23:03:11,398 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=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 23:03:11,398 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-22 23:03:11,562 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-22 23:03:11,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:03:11,568 INFO L85 PathProgramCache]: Analyzing trace with hash -128122346, now seen corresponding path program 1 times [2021-11-22 23:03:11,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:03:11,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960207950] [2021-11-22 23:03:11,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:03:11,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:03:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:03:11,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:03:11,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:03:11,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960207950] [2021-11-22 23:03:11,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960207950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:03:11,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:03:11,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 23:03:11,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809991978] [2021-11-22 23:03:11,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:03:11,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 23:03:11,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:03:11,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 23:03:11,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 23:03:11,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:11,859 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-22 23:03:11,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 54.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:03:11,861 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:11,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:11,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 23:03:11,942 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-22 23:03:11,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:03:11,944 INFO L85 PathProgramCache]: Analyzing trace with hash -651218867, now seen corresponding path program 1 times [2021-11-22 23:03:11,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:03:11,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005533927] [2021-11-22 23:03:11,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:03:11,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:03:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:03:12,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:03:12,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:03:12,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005533927] [2021-11-22 23:03:12,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005533927] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:03:12,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:03:12,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 23:03:12,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276608584] [2021-11-22 23:03:12,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:03:12,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 23:03:12,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:03:12,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 23:03:12,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-22 23:03:12,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:12,237 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-22 23:03:12,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:03:12,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:12,240 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:12,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:12,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:03:12,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 23:03:12,426 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-22 23:03:12,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:03:12,426 INFO L85 PathProgramCache]: Analyzing trace with hash 55265672, now seen corresponding path program 1 times [2021-11-22 23:03:12,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:03:12,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40090255] [2021-11-22 23:03:12,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:03:12,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:03:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:03:13,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 23:03:13,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:03:13,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40090255] [2021-11-22 23:03:13,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40090255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:03:13,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:03:13,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-22 23:03:13,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101218062] [2021-11-22 23:03:13,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:03:13,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-22 23:03:13,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:03:13,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-22 23:03:13,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-22 23:03:13,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:13,427 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-22 23:03:13,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:03:13,428 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:13,428 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:03:13,428 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:13,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:13,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:03:13,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:03:13,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 23:03:13,840 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-22 23:03:13,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:03:13,841 INFO L85 PathProgramCache]: Analyzing trace with hash 416617960, now seen corresponding path program 1 times [2021-11-22 23:03:13,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:03:13,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029580066] [2021-11-22 23:03:13,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:03:13,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:03:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:03:13,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 23:03:13,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:03:13,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029580066] [2021-11-22 23:03:13,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029580066] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:03:13,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:03:13,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 23:03:13,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441273426] [2021-11-22 23:03:13,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:03:13,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 23:03:13,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:03:13,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 23:03:13,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 23:03:13,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:13,965 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-22 23:03:13,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:03:13,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:13,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:03:13,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:03:13,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:14,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:14,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:03:14,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:03:14,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:03:14,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 23:03:14,027 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-22 23:03:14,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:03:14,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1789605619, now seen corresponding path program 1 times [2021-11-22 23:03:14,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:03:14,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872974867] [2021-11-22 23:03:14,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:03:14,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:03:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:03:14,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:03:14,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:03:14,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872974867] [2021-11-22 23:03:14,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872974867] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 23:03:14,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978017334] [2021-11-22 23:03:14,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:03:14,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:03:14,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 [2021-11-22 23:03:14,151 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 23:03:14,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 23:03:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:03:14,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 23:03:14,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:03:14,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:03:14,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 23:03:15,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:03:15,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978017334] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 23:03:15,145 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 23:03:15,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2021-11-22 23:03:15,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332660703] [2021-11-22 23:03:15,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 23:03:15,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-22 23:03:15,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:03:15,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-22 23:03:15,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-11-22 23:03:15,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:15,150 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-22 23:03:15,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.052631578947368) internal successors, (172), 19 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:03:15,150 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:15,150 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:03:15,151 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:03:15,151 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:03:15,151 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:15,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:15,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:03:15,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:03:15,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:03:15,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:03:15,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 23:03:15,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:03:15,718 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-22 23:03:15,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:03:15,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1871103922, now seen corresponding path program 2 times [2021-11-22 23:03:15,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:03:15,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841598126] [2021-11-22 23:03:15,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:03:15,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:03:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:03:16,769 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:03:16,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:03:16,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841598126] [2021-11-22 23:03:16,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841598126] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 23:03:16,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305251073] [2021-11-22 23:03:16,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 23:03:16,771 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:03:16,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 [2021-11-22 23:03:16,774 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 23:03:16,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 23:03:16,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 23:03:16,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 23:03:16,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-22 23:03:16,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:03:18,060 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-11-22 23:03:18,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 22 [2021-11-22 23:03:18,118 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:03:18,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 23:03:18,410 INFO L354 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2021-11-22 23:03:18,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2021-11-22 23:03:19,719 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:03:19,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305251073] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 23:03:19,720 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 23:03:19,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 14, 14] total 48 [2021-11-22 23:03:19,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050898344] [2021-11-22 23:03:19,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 23:03:19,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-22 23:03:19,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:03:19,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-22 23:03:19,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=2049, Unknown=0, NotChecked=0, Total=2256 [2021-11-22 23:03:19,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:19,725 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-22 23:03:19,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 6.020833333333333) internal successors, (289), 48 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:03:19,725 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:19,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:03:19,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:03:19,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:03:19,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:03:19,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:21,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:21,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:03:21,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:03:21,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:03:21,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:03:21,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-22 23:03:21,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 23:03:22,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-22 23:03:22,058 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-22 23:03:22,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:03:22,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1673781758, now seen corresponding path program 1 times [2021-11-22 23:03:22,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:03:22,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504075777] [2021-11-22 23:03:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:03:22,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:03:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:03:24,147 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:03:24,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:03:24,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504075777] [2021-11-22 23:03:24,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504075777] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 23:03:24,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3145462] [2021-11-22 23:03:24,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:03:24,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:03:24,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 [2021-11-22 23:03:24,149 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 23:03:24,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 23:03:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:03:24,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-22 23:03:24,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:03:26,747 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-11-22 23:03:26,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 26 [2021-11-22 23:03:27,390 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:03:27,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 23:03:29,048 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 23:03:29,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 40 [2021-11-22 23:03:32,384 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:03:32,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3145462] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 23:03:32,384 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 23:03:32,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 31, 31] total 89 [2021-11-22 23:03:32,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044668959] [2021-11-22 23:03:32,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 23:03:32,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2021-11-22 23:03:32,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:03:32,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-11-22 23:03:32,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=7153, Unknown=0, NotChecked=0, Total=7832 [2021-11-22 23:03:32,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:32,391 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-22 23:03:32,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 3.808988764044944) internal successors, (339), 89 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:03:32,392 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:32,393 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:03:32,393 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:03:32,393 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:03:32,393 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:03:32,393 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2021-11-22 23:03:32,393 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:36,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:36,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:03:36,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:03:36,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:03:36,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:03:36,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-22 23:03:36,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-22 23:03:36,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 23:03:36,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:03:36,912 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-22 23:03:36,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:03:36,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1834440498, now seen corresponding path program 2 times [2021-11-22 23:03:36,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:03:36,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977800340] [2021-11-22 23:03:36,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:03:36,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:03:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:03:37,124 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:03:37,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:03:37,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977800340] [2021-11-22 23:03:37,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977800340] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 23:03:37,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294213278] [2021-11-22 23:03:37,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 23:03:37,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:03:37,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 [2021-11-22 23:03:37,130 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 23:03:37,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 23:03:37,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 23:03:37,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 23:03:37,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 23:03:37,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:03:37,447 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 23:03:37,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 23:03:37,924 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 23:03:37,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294213278] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 23:03:37,925 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 23:03:37,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 7] total 19 [2021-11-22 23:03:37,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671578579] [2021-11-22 23:03:37,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 23:03:37,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-22 23:03:37,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:03:37,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-22 23:03:37,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-11-22 23:03:37,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:37,928 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-22 23:03:37,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.68421052631579) internal successors, (279), 19 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:03:37,929 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:37,929 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:03:37,929 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:03:37,930 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:03:37,930 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:03:37,930 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2021-11-22 23:03:37,930 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 50 states. [2021-11-22 23:03:37,930 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:39,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:39,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:03:39,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:03:39,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:03:39,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:03:39,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-22 23:03:39,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-22 23:03:39,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:03:39,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-22 23:03:39,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:03:39,318 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-22 23:03:39,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:03:39,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1541597172, now seen corresponding path program 3 times [2021-11-22 23:03:39,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:03:39,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100535638] [2021-11-22 23:03:39,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:03:39,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:03:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:03:39,450 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 23 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 23:03:39,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:03:39,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100535638] [2021-11-22 23:03:39,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100535638] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 23:03:39,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144174695] [2021-11-22 23:03:39,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 23:03:39,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:03:39,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 [2021-11-22 23:03:39,453 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 23:03:39,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 23:03:39,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-22 23:03:39,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 23:03:39,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-22 23:03:39,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:03:40,357 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-22 23:03:40,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 23:03:40,877 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-22 23:03:40,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144174695] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 23:03:40,878 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 23:03:40,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 31 [2021-11-22 23:03:40,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496584254] [2021-11-22 23:03:40,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 23:03:40,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-22 23:03:40,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:03:40,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-22 23:03:40,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=742, Unknown=0, NotChecked=0, Total=930 [2021-11-22 23:03:40,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:40,883 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-22 23:03:40,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 8.225806451612904) internal successors, (255), 31 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:03:40,884 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:40,884 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:03:40,884 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:03:40,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:03:40,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:03:40,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 38 states. [2021-11-22 23:03:40,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 67 states. [2021-11-22 23:03:40,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:03:40,886 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:41,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:41,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:03:41,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:03:41,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:03:41,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:03:41,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-22 23:03:41,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-22 23:03:41,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:03:41,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-22 23:03:41,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-22 23:03:41,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:03:41,733 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-22 23:03:41,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:03:41,733 INFO L85 PathProgramCache]: Analyzing trace with hash -973709986, now seen corresponding path program 3 times [2021-11-22 23:03:41,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:03:41,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268461606] [2021-11-22 23:03:41,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:03:41,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:03:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:03:42,569 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:03:42,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:03:42,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268461606] [2021-11-22 23:03:42,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268461606] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 23:03:42,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627868999] [2021-11-22 23:03:42,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 23:03:42,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:03:42,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 [2021-11-22 23:03:42,576 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 23:03:42,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-22 23:03:42,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-22 23:03:42,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 23:03:42,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-22 23:03:42,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:03:43,120 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-22 23:03:43,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-11-22 23:03:43,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-11-22 23:03:43,221 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 23:03:43,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 23:03:49,461 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 23:03:49,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 55 [2021-11-22 23:03:50,099 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 23:03:50,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627868999] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 23:03:50,099 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 23:03:50,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 12] total 40 [2021-11-22 23:03:50,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585845662] [2021-11-22 23:03:50,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 23:03:50,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-22 23:03:50,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:03:50,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-22 23:03:50,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1451, Unknown=7, NotChecked=0, Total=1560 [2021-11-22 23:03:50,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:50,102 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-22 23:03:50,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 7.375) internal successors, (295), 40 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:03:50,102 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:50,102 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:03:50,103 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:03:50,103 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:03:50,103 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:03:50,103 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2021-11-22 23:03:50,103 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 68 states. [2021-11-22 23:03:50,103 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:03:50,103 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-11-22 23:03:50,103 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:54,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:54,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:03:54,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:03:54,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:03:54,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:03:54,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:03:54,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:03:54,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:03:54,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:03:54,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:03:54,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-22 23:03:54,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:03:54,313 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-22 23:03:54,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:03:54,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1912216450, now seen corresponding path program 4 times [2021-11-22 23:03:54,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:03:54,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933283542] [2021-11-22 23:03:54,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:03:54,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:03:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:03:55,153 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:03:55,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:03:55,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933283542] [2021-11-22 23:03:55,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933283542] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 23:03:55,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21297042] [2021-11-22 23:03:55,154 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-22 23:03:55,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:03:55,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 [2021-11-22 23:03:55,155 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 23:03:55,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-22 23:03:55,219 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-22 23:03:55,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 23:03:55,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-22 23:03:55,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:03:56,326 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-11-22 23:03:56,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 19 [2021-11-22 23:03:56,361 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:03:56,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 23:03:56,516 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-22 23:03:56,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2021-11-22 23:03:57,953 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:03:57,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21297042] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 23:03:57,953 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 23:03:57,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 18, 18] total 54 [2021-11-22 23:03:57,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587706354] [2021-11-22 23:03:57,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 23:03:57,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-11-22 23:03:57,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:03:57,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-11-22 23:03:57,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=2472, Unknown=0, NotChecked=0, Total=2862 [2021-11-22 23:03:57,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:57,956 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-22 23:03:57,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 6.277777777777778) internal successors, (339), 54 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:03:57,957 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:57,957 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:03:57,957 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:03:57,957 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:03:57,957 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:03:57,957 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:03:57,957 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:03:57,958 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:03:57,958 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:03:57,958 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:03:57,958 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:59,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:03:59,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:03:59,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:03:59,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:03:59,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:03:59,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:03:59,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:03:59,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:03:59,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:03:59,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:03:59,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-22 23:03:59,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-22 23:03:59,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:03:59,788 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-22 23:03:59,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:03:59,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1603083086, now seen corresponding path program 5 times [2021-11-22 23:03:59,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:03:59,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61058401] [2021-11-22 23:03:59,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:03:59,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:03:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:04:02,808 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:04:02,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:04:02,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61058401] [2021-11-22 23:04:02,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61058401] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 23:04:02,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884740367] [2021-11-22 23:04:02,809 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-22 23:04:02,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:04:02,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 [2021-11-22 23:04:02,814 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 23:04:02,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-22 23:04:02,961 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-11-22 23:04:02,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 23:04:02,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 86 conjunts are in the unsatisfiable core [2021-11-22 23:04:02,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:04:06,905 INFO L354 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2021-11-22 23:04:06,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 24 [2021-11-22 23:04:07,743 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:04:07,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 23:04:11,646 INFO L354 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2021-11-22 23:04:11,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 101 treesize of output 94 [2021-11-22 23:04:17,550 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:04:17,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884740367] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 23:04:17,551 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 23:04:17,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 46, 41] total 122 [2021-11-22 23:04:17,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896986870] [2021-11-22 23:04:17,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 23:04:17,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2021-11-22 23:04:17,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:04:17,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2021-11-22 23:04:17,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1241, Invalid=13520, Unknown=1, NotChecked=0, Total=14762 [2021-11-22 23:04:17,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:04:17,559 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-22 23:04:17,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 3.1721311475409837) internal successors, (387), 122 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:04:17,560 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:04:17,560 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:04:17,560 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:04:17,560 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:04:17,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:04:17,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:04:17,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:04:17,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:04:17,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:04:17,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:04:17,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2021-11-22 23:04:17,562 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:04:30,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:04:30,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:04:30,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:04:30,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:04:30,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:04:30,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:04:30,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:04:30,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:04:30,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:04:30,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:04:30,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-22 23:04:30,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-11-22 23:04:30,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-22 23:04:30,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-22 23:04:30,342 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-22 23:04:30,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:04:30,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1658971390, now seen corresponding path program 6 times [2021-11-22 23:04:30,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:04:30,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994088323] [2021-11-22 23:04:30,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:04:30,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:04:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:04:30,440 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 30 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-22 23:04:30,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:04:30,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994088323] [2021-11-22 23:04:30,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994088323] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 23:04:30,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211287270] [2021-11-22 23:04:30,441 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-22 23:04:30,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:04:30,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 [2021-11-22 23:04:30,443 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 23:04:30,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-22 23:04:30,548 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-11-22 23:04:30,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 23:04:30,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-22 23:04:30,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:04:31,381 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 30 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-22 23:04:31,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 23:04:32,534 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 21 proven. 36 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-22 23:04:32,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211287270] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 23:04:32,535 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 23:04:32,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 17, 17] total 35 [2021-11-22 23:04:32,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352997539] [2021-11-22 23:04:32,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 23:04:32,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-22 23:04:32,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:04:32,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-22 23:04:32,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=904, Unknown=0, NotChecked=0, Total=1190 [2021-11-22 23:04:32,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:04:32,538 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-22 23:04:32,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 9.771428571428572) internal successors, (342), 35 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:04:32,538 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:04:32,539 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:04:32,539 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:04:32,539 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:04:32,539 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:04:32,539 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:04:32,539 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:04:32,539 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:04:32,540 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:04:32,540 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:04:32,540 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2021-11-22 23:04:32,540 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 65 states. [2021-11-22 23:04:32,540 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:04:40,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:04:40,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:04:40,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:04:40,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:04:40,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:04:40,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:04:40,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:04:40,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:04:40,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:04:40,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:04:40,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-22 23:04:40,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-11-22 23:04:40,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-22 23:04:40,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-22 23:04:40,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:04:40,821 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-22 23:04:40,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:04:40,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1649625756, now seen corresponding path program 7 times [2021-11-22 23:04:40,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:04:40,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138891512] [2021-11-22 23:04:40,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:04:40,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:04:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:04:41,817 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 10 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:04:41,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:04:41,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138891512] [2021-11-22 23:04:41,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138891512] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 23:04:41,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941865271] [2021-11-22 23:04:41,818 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-22 23:04:41,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:04:41,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 [2021-11-22 23:04:41,821 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 23:04:41,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-22 23:04:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:04:41,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-22 23:04:41,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:04:43,698 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-11-22 23:04:43,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 19 [2021-11-22 23:04:43,721 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 5 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:04:43,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 23:04:44,009 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-22 23:04:44,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2021-11-22 23:04:46,200 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 2 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:04:46,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941865271] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 23:04:46,200 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 23:04:46,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 22, 22] total 65 [2021-11-22 23:04:46,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907988098] [2021-11-22 23:04:46,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 23:04:46,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-11-22 23:04:46,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:04:46,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-11-22 23:04:46,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=3697, Unknown=0, NotChecked=0, Total=4160 [2021-11-22 23:04:46,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:04:46,203 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-22 23:04:46,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 6.015384615384615) internal successors, (391), 65 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:04:46,204 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:04:46,204 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:04:46,204 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:04:46,204 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:04:46,204 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:04:46,204 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:04:46,204 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:04:46,204 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:04:46,204 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:04:46,204 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:04:46,204 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 43 states. [2021-11-22 23:04:46,204 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 102 states. [2021-11-22 23:04:46,204 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-11-22 23:04:46,205 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:04:48,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:04:48,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:04:48,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:04:48,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:04:48,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:04:48,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:04:48,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:04:48,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:04:48,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:04:48,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:04:48,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-22 23:04:48,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-11-22 23:04:48,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-22 23:04:48,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-22 23:04:48,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-22 23:04:48,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-22 23:04:48,812 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-22 23:04:48,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:04:48,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1245273772, now seen corresponding path program 8 times [2021-11-22 23:04:48,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:04:48,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038790260] [2021-11-22 23:04:48,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:04:48,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:04:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:04:53,403 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:04:53,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:04:53,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038790260] [2021-11-22 23:04:53,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038790260] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 23:04:53,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3942159] [2021-11-22 23:04:53,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 23:04:53,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:04:53,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 [2021-11-22 23:04:53,405 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 23:04:53,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-22 23:04:53,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 23:04:53,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 23:04:53,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 107 conjunts are in the unsatisfiable core [2021-11-22 23:04:53,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:04:59,956 INFO L354 Elim1Store]: treesize reduction 251, result has 3.8 percent of original size [2021-11-22 23:04:59,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 82 treesize of output 39 [2021-11-22 23:05:01,039 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:05:01,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 23:05:08,908 INFO L354 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2021-11-22 23:05:08,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 123 treesize of output 165 [2021-11-22 23:05:16,393 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:05:16,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3942159] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 23:05:16,394 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 23:05:16,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 49, 49] total 145 [2021-11-22 23:05:16,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609720699] [2021-11-22 23:05:16,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 23:05:16,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 145 states [2021-11-22 23:05:16,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:05:16,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2021-11-22 23:05:16,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1464, Invalid=19415, Unknown=1, NotChecked=0, Total=20880 [2021-11-22 23:05:16,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:05:16,402 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-22 23:05:16,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 145 states, 145 states have (on average 3.0827586206896553) internal successors, (447), 145 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:05:16,403 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:05:16,403 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:05:16,403 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:05:16,403 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:05:16,403 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:05:16,403 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:05:16,403 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:05:16,403 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:05:16,403 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:05:16,403 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:05:16,403 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 43 states. [2021-11-22 23:05:16,403 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 102 states. [2021-11-22 23:05:16,403 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-11-22 23:05:16,404 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 40 states. [2021-11-22 23:05:16,404 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:05:29,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:05:29,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:05:29,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:05:29,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:05:29,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:05:29,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:05:29,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:05:29,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:05:29,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:05:29,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:05:29,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-22 23:05:29,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-11-22 23:05:29,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-22 23:05:29,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-22 23:05:29,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-11-22 23:05:29,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-22 23:05:29,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-22 23:05:29,986 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-22 23:05:29,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:05:29,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1930117732, now seen corresponding path program 9 times [2021-11-22 23:05:29,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:05:29,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143525451] [2021-11-22 23:05:29,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:05:29,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:05:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:05:30,128 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 33 proven. 38 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-22 23:05:30,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:05:30,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143525451] [2021-11-22 23:05:30,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143525451] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 23:05:30,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990928939] [2021-11-22 23:05:30,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 23:05:30,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:05:30,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 [2021-11-22 23:05:30,134 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 23:05:30,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-22 23:05:30,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-22 23:05:30,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 23:05:30,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-22 23:05:30,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:05:31,682 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 50 proven. 51 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-22 23:05:31,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 23:05:32,957 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 38 proven. 63 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-22 23:05:32,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990928939] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 23:05:32,957 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 23:05:32,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 20, 20] total 43 [2021-11-22 23:05:32,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002220516] [2021-11-22 23:05:32,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 23:05:32,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-22 23:05:32,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:05:32,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-22 23:05:32,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=1381, Unknown=0, NotChecked=0, Total=1806 [2021-11-22 23:05:32,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:05:32,960 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-22 23:05:32,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 8.767441860465116) internal successors, (377), 43 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:05:32,960 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:05:32,960 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:05:32,960 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:05:32,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:05:32,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:05:32,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:05:32,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:05:32,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:05:32,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:05:32,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:05:32,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 43 states. [2021-11-22 23:05:32,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 102 states. [2021-11-22 23:05:32,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-11-22 23:05:32,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 40 states. [2021-11-22 23:05:32,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 75 states. [2021-11-22 23:05:32,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:05:38,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:05:38,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:05:38,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:05:38,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:05:38,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:05:38,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:05:38,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:05:38,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:05:38,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:05:38,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:05:38,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:05:38,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-11-22 23:05:38,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-22 23:05:38,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:05:38,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-11-22 23:05:38,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-22 23:05:38,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-22 23:05:38,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-22 23:05:38,931 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-22 23:05:38,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:05:38,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1502710057, now seen corresponding path program 10 times [2021-11-22 23:05:38,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:05:38,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044300086] [2021-11-22 23:05:38,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:05:38,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:05:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:05:40,598 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:05:40,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:05:40,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044300086] [2021-11-22 23:05:40,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044300086] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 23:05:40,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937616330] [2021-11-22 23:05:40,599 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-22 23:05:40,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:05:40,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 [2021-11-22 23:05:40,601 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 23:05:40,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-22 23:05:40,671 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-22 23:05:40,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 23:05:40,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-22 23:05:40,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:05:42,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-22 23:05:42,325 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:05:42,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 23:05:42,616 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-22 23:05:42,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2021-11-22 23:05:44,391 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:05:44,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937616330] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 23:05:44,391 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 23:05:44,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 24, 24] total 72 [2021-11-22 23:05:44,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319673294] [2021-11-22 23:05:44,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 23:05:44,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2021-11-22 23:05:44,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:05:44,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-11-22 23:05:44,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=663, Invalid=4449, Unknown=0, NotChecked=0, Total=5112 [2021-11-22 23:05:44,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:05:44,395 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-22 23:05:44,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 5.75) internal successors, (414), 72 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:05:44,395 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:05:44,395 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:05:44,395 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:05:44,395 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:05:44,396 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:05:44,396 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:05:44,396 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:05:44,396 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:05:44,396 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:05:44,396 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:05:44,396 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:05:44,396 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 103 states. [2021-11-22 23:05:44,396 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-11-22 23:05:44,397 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:05:44,397 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 113 states. [2021-11-22 23:05:44,397 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2021-11-22 23:05:44,397 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:05:49,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:05:49,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:05:49,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:05:49,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:05:49,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:05:49,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:05:49,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:05:49,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:05:49,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:05:49,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:05:49,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:05:49,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-11-22 23:05:49,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-22 23:05:49,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:05:49,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-11-22 23:05:49,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-22 23:05:49,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-22 23:05:49,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-22 23:05:49,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-22 23:05:49,402 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-22 23:05:49,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:05:49,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1644803860, now seen corresponding path program 11 times [2021-11-22 23:05:49,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:05:49,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092658315] [2021-11-22 23:05:49,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:05:49,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:05:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:05:50,402 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 33 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:05:50,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:05:50,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092658315] [2021-11-22 23:05:50,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092658315] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 23:05:50,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826413438] [2021-11-22 23:05:50,403 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-22 23:05:50,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:05:50,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 [2021-11-22 23:05:50,404 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 23:05:50,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-22 23:05:50,497 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-22 23:05:50,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 23:05:50,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-22 23:05:50,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:05:52,631 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-11-22 23:05:52,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 19 [2021-11-22 23:05:52,697 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 33 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:05:52,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 23:05:53,019 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-22 23:05:53,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2021-11-22 23:05:55,668 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 10 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:05:55,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826413438] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 23:05:55,668 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 23:05:55,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 26, 26] total 77 [2021-11-22 23:05:55,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033147200] [2021-11-22 23:05:55,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 23:05:55,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2021-11-22 23:05:55,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:05:55,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-11-22 23:05:55,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=648, Invalid=5204, Unknown=0, NotChecked=0, Total=5852 [2021-11-22 23:05:55,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:05:55,670 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-22 23:05:55,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 5.779220779220779) internal successors, (445), 77 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:05:55,671 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:05:55,671 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:05:55,671 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:05:55,671 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:05:55,671 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:05:55,671 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:05:55,671 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:05:55,671 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:05:55,671 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:05:55,671 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:05:55,671 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:05:55,671 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 103 states. [2021-11-22 23:05:55,671 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-11-22 23:05:55,671 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:05:55,672 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 117 states. [2021-11-22 23:05:55,672 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2021-11-22 23:05:55,672 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 47 states. [2021-11-22 23:05:55,672 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:05:58,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:05:58,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:05:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:05:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:05:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:05:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:05:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:05:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:05:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:05:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:05:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:05:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-11-22 23:05:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-22 23:05:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:05:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-11-22 23:05:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-22 23:05:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-22 23:05:58,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-22 23:05:58,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-22 23:05:58,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-22 23:05:58,753 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-22 23:05:58,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:05:58,753 INFO L85 PathProgramCache]: Analyzing trace with hash 804863964, now seen corresponding path program 12 times [2021-11-22 23:05:58,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:05:58,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619210172] [2021-11-22 23:05:58,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:05:58,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:05:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:06:06,680 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 33 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:06:06,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:06:06,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619210172] [2021-11-22 23:06:06,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619210172] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 23:06:06,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389714022] [2021-11-22 23:06:06,680 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-22 23:06:06,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:06:06,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 [2021-11-22 23:06:06,682 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 23:06:06,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-22 23:06:07,302 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-11-22 23:06:07,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 23:06:07,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 138 conjunts are in the unsatisfiable core [2021-11-22 23:06:07,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:06:16,621 INFO L354 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2021-11-22 23:06:16,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 28 [2021-11-22 23:06:17,833 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:06:17,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 23:06:27,506 INFO L354 Elim1Store]: treesize reduction 274, result has 44.2 percent of original size [2021-11-22 23:06:27,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 156 treesize of output 267 [2021-11-22 23:06:35,374 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:06:35,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389714022] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 23:06:35,374 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 23:06:35,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 63, 58] total 185 [2021-11-22 23:06:35,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012909296] [2021-11-22 23:06:35,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 23:06:35,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 185 states [2021-11-22 23:06:35,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:06:35,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2021-11-22 23:06:35,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2520, Invalid=31520, Unknown=0, NotChecked=0, Total=34040 [2021-11-22 23:06:35,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:06:35,379 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-22 23:06:35,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 185 states, 185 states have (on average 2.789189189189189) internal successors, (516), 185 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:06:35,380 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:06:35,380 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:06:35,380 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:06:35,380 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:06:35,380 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:06:35,381 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:06:35,381 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:06:35,381 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:06:35,381 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:06:35,381 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:06:35,381 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:06:35,381 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 103 states. [2021-11-22 23:06:35,382 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-11-22 23:06:35,382 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:06:35,382 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 117 states. [2021-11-22 23:06:35,382 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2021-11-22 23:06:35,382 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 47 states. [2021-11-22 23:06:35,382 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 46 states. [2021-11-22 23:06:35,382 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:07:08,992 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 23:08:20,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:08:20,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:08:20,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:08:20,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:08:20,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:08:20,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:08:20,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:08:20,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:08:20,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:08:20,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:08:20,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:08:20,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-11-22 23:08:20,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-22 23:08:20,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:08:20,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-11-22 23:08:20,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-22 23:08:20,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-22 23:08:20,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-22 23:08:20,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-11-22 23:08:20,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-22 23:08:20,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:08:20,762 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-22 23:08:20,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:08:20,762 INFO L85 PathProgramCache]: Analyzing trace with hash 667415572, now seen corresponding path program 13 times [2021-11-22 23:08:20,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:08:20,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614033017] [2021-11-22 23:08:20,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:08:20,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:08:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:08:20,922 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 53 proven. 62 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-22 23:08:20,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:08:20,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614033017] [2021-11-22 23:08:20,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614033017] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 23:08:20,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283804965] [2021-11-22 23:08:20,923 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-22 23:08:20,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:08:20,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 [2021-11-22 23:08:20,926 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 23:08:20,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-22 23:08:21,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:08:21,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-22 23:08:21,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:08:22,147 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 75 proven. 82 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-22 23:08:22,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 23:08:23,581 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 60 proven. 97 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-22 23:08:23,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283804965] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 23:08:23,581 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 23:08:23,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 23, 23] total 50 [2021-11-22 23:08:23,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600523512] [2021-11-22 23:08:23,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 23:08:23,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-22 23:08:23,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:08:23,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-22 23:08:23,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=571, Invalid=1879, Unknown=0, NotChecked=0, Total=2450 [2021-11-22 23:08:23,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:08:23,584 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-22 23:08:23,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 8.24) internal successors, (412), 50 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:08:23,585 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:08:23,585 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:08:23,585 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:08:23,585 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:08:23,585 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:08:23,586 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:08:23,586 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:08:23,586 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:08:23,586 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:08:23,586 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:08:23,586 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:08:23,586 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 103 states. [2021-11-22 23:08:23,587 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-11-22 23:08:23,587 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:08:23,587 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 117 states. [2021-11-22 23:08:23,587 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2021-11-22 23:08:23,587 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 47 states. [2021-11-22 23:08:23,587 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 46 states. [2021-11-22 23:08:23,587 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 95 states. [2021-11-22 23:08:23,587 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:09:47,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:09:47,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:09:47,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:09:47,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:09:47,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:09:47,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:09:47,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:09:47,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:09:47,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:09:47,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:09:47,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:09:47,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-11-22 23:09:47,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-22 23:09:47,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:09:47,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-11-22 23:09:47,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-22 23:09:47,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-22 23:09:47,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-22 23:09:47,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2021-11-22 23:09:47,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-22 23:09:47,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-22 23:09:48,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:09:48,061 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-22 23:09:48,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:09:48,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1535743345, now seen corresponding path program 14 times [2021-11-22 23:09:48,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:09:48,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247193659] [2021-11-22 23:09:48,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:09:48,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:09:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:09:52,378 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:09:52,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:09:52,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247193659] [2021-11-22 23:09:52,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247193659] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 23:09:52,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793680397] [2021-11-22 23:09:52,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 23:09:52,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:09:52,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 [2021-11-22 23:09:52,380 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 23:09:52,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-22 23:09:52,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 23:09:52,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 23:09:52,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 58 conjunts are in the unsatisfiable core [2021-11-22 23:09:52,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:09:55,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-22 23:09:55,151 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:09:55,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 23:09:55,721 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-22 23:09:55,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2021-11-22 23:09:58,715 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:09:58,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793680397] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 23:09:58,716 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 23:09:58,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 28, 28] total 95 [2021-11-22 23:09:58,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924824009] [2021-11-22 23:09:58,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 23:09:58,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2021-11-22 23:09:58,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:09:58,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-11-22 23:09:58,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=760, Invalid=8170, Unknown=0, NotChecked=0, Total=8930 [2021-11-22 23:09:58,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:09:58,719 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-22 23:09:58,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 4.957894736842105) internal successors, (471), 95 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:09:58,720 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:09:58,720 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:09:58,721 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:09:58,721 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:09:58,721 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:09:58,721 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:09:58,721 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:09:58,721 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:09:58,721 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:09:58,721 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:09:58,722 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:09:58,722 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 103 states. [2021-11-22 23:09:58,722 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-11-22 23:09:58,722 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:09:58,722 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 117 states. [2021-11-22 23:09:58,722 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2021-11-22 23:09:58,722 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 60 states. [2021-11-22 23:09:58,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 49 states. [2021-11-22 23:09:58,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 181 states. [2021-11-22 23:09:58,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 47 states. [2021-11-22 23:09:58,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:10:08,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:10:08,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:10:08,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:10:08,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:10:08,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:10:08,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:10:08,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:10:08,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:10:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:10:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:10:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:10:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-11-22 23:10:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-22 23:10:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:10:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-11-22 23:10:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-22 23:10:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-22 23:10:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-22 23:10:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2021-11-22 23:10:08,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-22 23:10:08,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-11-22 23:10:08,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-22 23:10:08,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-22 23:10:08,445 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-22 23:10:08,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:10:08,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1464442246, now seen corresponding path program 15 times [2021-11-22 23:10:08,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:10:08,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802623007] [2021-11-22 23:10:08,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:10:08,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:10:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:10:09,707 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 38 proven. 188 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:10:09,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:10:09,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802623007] [2021-11-22 23:10:09,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802623007] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 23:10:09,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832326993] [2021-11-22 23:10:09,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 23:10:09,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:10:09,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 [2021-11-22 23:10:09,710 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 23:10:09,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-22 23:10:10,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-22 23:10:10,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 23:10:10,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-22 23:10:10,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:10:11,459 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-11-22 23:10:11,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 16 [2021-11-22 23:10:11,483 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-22 23:10:11,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 23:10:11,907 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-22 23:10:11,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2021-11-22 23:10:12,584 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-22 23:10:12,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832326993] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 23:10:12,584 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 23:10:12,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 13, 13] total 50 [2021-11-22 23:10:12,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228169633] [2021-11-22 23:10:12,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 23:10:12,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-22 23:10:12,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:10:12,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-22 23:10:12,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2288, Unknown=0, NotChecked=0, Total=2450 [2021-11-22 23:10:12,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:10:12,587 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-22 23:10:12,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 6.98) internal successors, (349), 50 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:10:12,588 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:10:12,588 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:10:12,588 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:10:12,588 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:10:12,588 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:10:12,589 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:10:12,589 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:10:12,589 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:10:12,589 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:10:12,589 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:10:12,589 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:10:12,589 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 103 states. [2021-11-22 23:10:12,590 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-11-22 23:10:12,590 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:10:12,590 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 117 states. [2021-11-22 23:10:12,590 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2021-11-22 23:10:12,590 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 60 states. [2021-11-22 23:10:12,590 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 49 states. [2021-11-22 23:10:12,590 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 186 states. [2021-11-22 23:10:12,590 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 48 states. [2021-11-22 23:10:12,591 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2021-11-22 23:10:12,591 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:10:16,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:10:16,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:10:16,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:10:16,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:10:16,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:10:16,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:10:16,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:10:16,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:10:16,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:10:16,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:10:16,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:10:16,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-11-22 23:10:16,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-22 23:10:16,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:10:16,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-11-22 23:10:16,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-22 23:10:16,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-22 23:10:16,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-22 23:10:16,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2021-11-22 23:10:16,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-22 23:10:16,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-11-22 23:10:16,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-22 23:10:16,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-22 23:10:16,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-22 23:10:16,351 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-22 23:10:16,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:10:16,352 INFO L85 PathProgramCache]: Analyzing trace with hash -415133526, now seen corresponding path program 16 times [2021-11-22 23:10:16,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:10:16,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748077384] [2021-11-22 23:10:16,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:10:16,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:10:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:10:28,042 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 56 proven. 195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:10:28,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:10:28,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748077384] [2021-11-22 23:10:28,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748077384] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 23:10:28,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578094666] [2021-11-22 23:10:28,043 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-22 23:10:28,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:10:28,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 [2021-11-22 23:10:28,051 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 23:10:28,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-22 23:10:28,161 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-22 23:10:28,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 23:10:28,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 160 conjunts are in the unsatisfiable core [2021-11-22 23:10:28,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:10:40,898 INFO L354 Elim1Store]: treesize reduction 176, result has 0.6 percent of original size [2021-11-22 23:10:40,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 120 treesize of output 32 [2021-11-22 23:10:42,308 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 251 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:10:42,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 23:11:00,706 INFO L354 Elim1Store]: treesize reduction 452, result has 43.0 percent of original size [2021-11-22 23:11:00,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 189 treesize of output 397 [2021-11-22 23:11:15,166 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 251 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:11:15,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578094666] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 23:11:15,166 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 23:11:15,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 67, 67] total 208 [2021-11-22 23:11:15,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104717651] [2021-11-22 23:11:15,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 23:11:15,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 208 states [2021-11-22 23:11:15,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:11:15,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2021-11-22 23:11:15,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2805, Invalid=40251, Unknown=0, NotChecked=0, Total=43056 [2021-11-22 23:11:15,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:11:15,174 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-22 23:11:15,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 208 states, 208 states have (on average 2.7403846153846154) internal successors, (570), 208 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:15,175 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:11:15,175 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:11:15,175 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:11:15,175 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:11:15,175 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:11:15,175 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:11:15,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:11:15,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:11:15,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:11:15,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:11:15,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:11:15,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 103 states. [2021-11-22 23:11:15,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-11-22 23:11:15,177 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:11:15,177 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 117 states. [2021-11-22 23:11:15,177 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2021-11-22 23:11:15,177 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 60 states. [2021-11-22 23:11:15,177 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 49 states. [2021-11-22 23:11:15,177 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 186 states. [2021-11-22 23:11:15,177 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 48 states. [2021-11-22 23:11:15,177 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2021-11-22 23:11:15,178 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 49 states. [2021-11-22 23:11:15,178 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:13:10,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 23:13:59,370 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 23:14:01,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 23:15:48,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:15:48,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:15:48,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:15:48,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:15:48,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:15:48,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:15:48,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:15:48,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:15:48,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:15:48,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:15:48,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:15:48,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-11-22 23:15:48,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-22 23:15:48,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:15:48,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-11-22 23:15:48,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-22 23:15:48,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-22 23:15:48,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-22 23:15:48,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2021-11-22 23:15:48,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-22 23:15:48,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-11-22 23:15:48,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-22 23:15:48,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-22 23:15:48,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-22 23:15:48,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-22 23:15:48,974 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-22 23:15:48,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:15:48,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1598557178, now seen corresponding path program 17 times [2021-11-22 23:15:48,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:15:48,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376027403] [2021-11-22 23:15:48,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:15:48,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:15:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:15:49,169 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 78 proven. 92 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-22 23:15:49,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:15:49,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376027403] [2021-11-22 23:15:49,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376027403] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 23:15:49,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550339240] [2021-11-22 23:15:49,170 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-22 23:15:49,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:15:49,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 [2021-11-22 23:15:49,176 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 23:15:49,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f34705d2-2590-4b7e-a43a-a05924ae032b/bin/ugemcutter-lIJgRBJBxA/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-22 23:15:49,307 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-11-22 23:15:49,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 23:15:49,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-22 23:15:49,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:15:50,820 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 105 proven. 120 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-22 23:15:50,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 23:15:52,734 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 87 proven. 138 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-22 23:15:52,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550339240] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 23:15:52,734 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 23:15:52,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 26, 26] total 57 [2021-11-22 23:15:52,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735851886] [2021-11-22 23:15:52,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 23:15:52,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-11-22 23:15:52,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:15:52,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-11-22 23:15:52,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=739, Invalid=2453, Unknown=0, NotChecked=0, Total=3192 [2021-11-22 23:15:52,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:15:52,737 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-22 23:15:52,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 7.842105263157895) internal successors, (447), 57 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:15:52,738 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-22 23:15:52,738 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:15:52,738 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-11-22 23:15:52,738 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:15:52,738 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-11-22 23:15:52,738 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:15:52,738 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 73 states. [2021-11-22 23:15:52,738 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-11-22 23:15:52,739 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-11-22 23:15:52,739 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-11-22 23:15:52,739 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-11-22 23:15:52,739 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 103 states. [2021-11-22 23:15:52,739 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-11-22 23:15:52,739 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2021-11-22 23:15:52,739 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 117 states. [2021-11-22 23:15:52,739 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2021-11-22 23:15:52,739 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 60 states. [2021-11-22 23:15:52,739 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 49 states. [2021-11-22 23:15:52,739 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 186 states. [2021-11-22 23:15:52,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 48 states. [2021-11-22 23:15:52,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2021-11-22 23:15:52,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 49 states. [2021-11-22 23:15:52,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 108 states. [2021-11-22 23:15:52,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.