./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1270b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1270b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 35bac483b91a5ef1ca7e770e0d3fb7ad4f1fb6725ed9e57de7011eda6b44423e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:43:56,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:43:56,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:43:56,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:43:56,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:43:56,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:43:56,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:43:56,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:43:56,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:43:56,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:43:56,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:43:56,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:43:56,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:43:56,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:43:56,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:43:56,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:43:56,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:43:56,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:43:56,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:43:56,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:43:56,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:43:56,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:43:56,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:43:56,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:43:56,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:43:56,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:43:56,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:43:56,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:43:56,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:43:56,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:43:56,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:43:56,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:43:56,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:43:56,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:43:56,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:43:56,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:43:56,946 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:43:56,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:43:56,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:43:56,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:43:56,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:43:56,950 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:43:56,998 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:43:56,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:43:56,999 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:43:56,999 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:43:57,000 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:43:57,001 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:43:57,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:43:57,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:43:57,002 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:43:57,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:43:57,004 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:43:57,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:43:57,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:43:57,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:43:57,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:43:57,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:43:57,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:43:57,005 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:43:57,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:43:57,006 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:43:57,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:43:57,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:43:57,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:43:57,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:43:57,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:43:57,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:43:57,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:43:57,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:43:57,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:43:57,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:43:57,009 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:43:57,009 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:43:57,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:43:57,010 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_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35bac483b91a5ef1ca7e770e0d3fb7ad4f1fb6725ed9e57de7011eda6b44423e [2022-10-17 10:43:57,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:43:57,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:43:57,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:43:57,391 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:43:57,392 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:43:57,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/float-newlib/float_req_bl_1270b.c [2022-10-17 10:43:57,480 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/data/dbaed7d0a/ed913d3a8bdb4a9fa1a90783d2eac918/FLAG75cf8cc0f [2022-10-17 10:43:58,024 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:43:58,025 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/sv-benchmarks/c/float-newlib/float_req_bl_1270b.c [2022-10-17 10:43:58,047 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/data/dbaed7d0a/ed913d3a8bdb4a9fa1a90783d2eac918/FLAG75cf8cc0f [2022-10-17 10:43:58,353 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/data/dbaed7d0a/ed913d3a8bdb4a9fa1a90783d2eac918 [2022-10-17 10:43:58,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:43:58,357 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:43:58,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:43:58,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:43:58,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:43:58,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:43:58" (1/1) ... [2022-10-17 10:43:58,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34e33b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:58, skipping insertion in model container [2022-10-17 10:43:58,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:43:58" (1/1) ... [2022-10-17 10:43:58,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:43:58,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:43:58,658 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_9b648bdc-144f-4dc6-a499-8d69fe3a5419/sv-benchmarks/c/float-newlib/float_req_bl_1270b.c[4704,4717] [2022-10-17 10:43:58,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:43:58,668 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:43:58,722 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_9b648bdc-144f-4dc6-a499-8d69fe3a5419/sv-benchmarks/c/float-newlib/float_req_bl_1270b.c[4704,4717] [2022-10-17 10:43:58,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:43:58,740 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:43:58,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:58 WrapperNode [2022-10-17 10:43:58,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:43:58,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:43:58,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:43:58,742 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:43:58,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:58" (1/1) ... [2022-10-17 10:43:58,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:58" (1/1) ... [2022-10-17 10:43:58,800 INFO L138 Inliner]: procedures = 18, calls = 75, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 254 [2022-10-17 10:43:58,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:43:58,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:43:58,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:43:58,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:43:58,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:58" (1/1) ... [2022-10-17 10:43:58,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:58" (1/1) ... [2022-10-17 10:43:58,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:58" (1/1) ... [2022-10-17 10:43:58,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:58" (1/1) ... [2022-10-17 10:43:58,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:58" (1/1) ... [2022-10-17 10:43:58,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:58" (1/1) ... [2022-10-17 10:43:58,843 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:58" (1/1) ... [2022-10-17 10:43:58,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:58" (1/1) ... [2022-10-17 10:43:58,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:43:58,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:43:58,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:43:58,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:43:58,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:58" (1/1) ... [2022-10-17 10:43:58,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:43:58,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:43:58,888 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:43:58,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:43:58,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:43:58,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:43:58,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:43:58,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-10-17 10:43:58,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:43:58,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-10-17 10:43:58,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:43:58,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:43:58,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:43:58,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:43:58,939 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2022-10-17 10:43:58,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2022-10-17 10:43:59,096 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:43:59,113 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:43:59,635 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:43:59,643 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:43:59,643 INFO L300 CfgBuilder]: Removed 34 assume(true) statements. [2022-10-17 10:43:59,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:43:59 BoogieIcfgContainer [2022-10-17 10:43:59,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:43:59,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:43:59,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:43:59,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:43:59,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:43:58" (1/3) ... [2022-10-17 10:43:59,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549f83a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:43:59, skipping insertion in model container [2022-10-17 10:43:59,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:58" (2/3) ... [2022-10-17 10:43:59,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549f83a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:43:59, skipping insertion in model container [2022-10-17 10:43:59,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:43:59" (3/3) ... [2022-10-17 10:43:59,672 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1270b.c [2022-10-17 10:43:59,693 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:43:59,693 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:43:59,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:43:59,798 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@64cd8aee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:43:59,798 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:43:59,803 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 91 states have (on average 1.7252747252747254) internal successors, (157), 92 states have internal predecessors, (157), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:43:59,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 10:43:59,812 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:43:59,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:59,814 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:43:59,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:59,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1724151004, now seen corresponding path program 1 times [2022-10-17 10:43:59,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:59,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227032292] [2022-10-17 10:43:59,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:59,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:00,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:00,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:44:00,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227032292] [2022-10-17 10:44:00,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227032292] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:00,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:00,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:44:00,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036640549] [2022-10-17 10:44:00,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:00,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:44:00,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:44:00,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:44:00,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:44:00,102 INFO L87 Difference]: Start difference. First operand has 96 states, 91 states have (on average 1.7252747252747254) internal successors, (157), 92 states have internal predecessors, (157), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2022-10-17 10:44:00,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:00,165 INFO L93 Difference]: Finished difference Result 190 states and 322 transitions. [2022-10-17 10:44:00,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:44:00,168 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) Word has length 16 [2022-10-17 10:44:00,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:00,181 INFO L225 Difference]: With dead ends: 190 [2022-10-17 10:44:00,181 INFO L226 Difference]: Without dead ends: 93 [2022-10-17 10:44:00,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:44:00,193 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:00,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:44:00,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-10-17 10:44:00,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2022-10-17 10:44:00,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 89 states have (on average 1.2808988764044944) internal successors, (114), 89 states have internal predecessors, (114), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:44:00,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 118 transitions. [2022-10-17 10:44:00,274 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 118 transitions. Word has length 16 [2022-10-17 10:44:00,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:00,275 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 118 transitions. [2022-10-17 10:44:00,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2022-10-17 10:44:00,275 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 118 transitions. [2022-10-17 10:44:00,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-17 10:44:00,278 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:00,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:00,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:44:00,279 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:00,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:00,280 INFO L85 PathProgramCache]: Analyzing trace with hash -927967701, now seen corresponding path program 1 times [2022-10-17 10:44:00,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:44:00,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776756353] [2022-10-17 10:44:00,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:00,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:44:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:44:00,396 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:44:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:44:00,515 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:44:00,516 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:44:00,518 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 10:44:00,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:44:00,523 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-17 10:44:00,527 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 10:44:00,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 10:44:00 BoogieIcfgContainer [2022-10-17 10:44:00,572 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 10:44:00,573 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:44:00,573 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:44:00,573 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:44:00,574 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:43:59" (3/4) ... [2022-10-17 10:44:00,578 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-10-17 10:44:00,578 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:44:00,580 INFO L158 Benchmark]: Toolchain (without parser) took 2221.89ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 53.2MB in the beginning and 43.7MB in the end (delta: 9.5MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2022-10-17 10:44:00,580 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 90.2MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:44:00,582 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.32ms. Allocated memory is still 90.2MB. Free memory was 53.0MB in the beginning and 61.9MB in the end (delta: -8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 10:44:00,585 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.60ms. Allocated memory is still 90.2MB. Free memory was 61.9MB in the beginning and 59.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:44:00,588 INFO L158 Benchmark]: Boogie Preprocessor took 49.69ms. Allocated memory is still 90.2MB. Free memory was 59.5MB in the beginning and 57.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:44:00,589 INFO L158 Benchmark]: RCFGBuilder took 794.30ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 56.9MB in the beginning and 80.1MB in the end (delta: -23.2MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2022-10-17 10:44:00,589 INFO L158 Benchmark]: TraceAbstraction took 907.64ms. Allocated memory is still 109.1MB. Free memory was 79.3MB in the beginning and 43.7MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2022-10-17 10:44:00,590 INFO L158 Benchmark]: Witness Printer took 5.49ms. Allocated memory is still 109.1MB. Free memory is still 43.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:44:00,597 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 90.2MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 382.32ms. Allocated memory is still 90.2MB. Free memory was 53.0MB in the beginning and 61.9MB in the end (delta: -8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.60ms. Allocated memory is still 90.2MB. Free memory was 61.9MB in the beginning and 59.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.69ms. Allocated memory is still 90.2MB. Free memory was 59.5MB in the beginning and 57.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 794.30ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 56.9MB in the beginning and 80.1MB in the end (delta: -23.2MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. * TraceAbstraction took 907.64ms. Allocated memory is still 109.1MB. Free memory was 79.3MB in the beginning and 43.7MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Witness Printer took 5.49ms. Allocated memory is still 109.1MB. Free memory is still 43.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 237]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 120, overapproximation of bitwiseAnd at line 220. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L231] float x = -1.0f / 0.0f; [L232] float y = __VERIFIER_nondet_float(); [L234] CALL, EXPR __ieee754_hypotf(x, y) [L84] float a = x, b = y, t1, t2, y1, y2, w; [L85] __int32_t j, k, ha, hb; VAL [\old(x)=8589934610, \old(y)=8589934611, a=8589934610, b=8589934611, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934610, y=8589934611] [L88] ieee_float_shape_type gf_u; [L89] gf_u.value = (x) [L90] EXPR gf_u.word [L90] (ha) = gf_u.word [L92] ha &= 0x7fffffffL VAL [\old(x)=8589934610, \old(y)=8589934611, a=8589934610, b=8589934611, ha=251658241, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934610, y=8589934611] [L94] ieee_float_shape_type gf_u; [L95] gf_u.value = (y) [L96] EXPR gf_u.word [L96] (hb) = gf_u.word [L98] hb &= 0x7fffffffL VAL [\old(x)=8589934610, \old(y)=8589934611, a=8589934610, b=8589934611, ha=251658241, hb=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934610, y=8589934611] [L99] COND FALSE !(hb > ha) [L106] a = x [L107] b = y VAL [\old(x)=8589934610, \old(y)=8589934611, a=8589934610, b=8589934611, ha=251658241, hb=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934610, y=8589934611] [L110] ieee_float_shape_type sf_u; [L111] sf_u.word = (ha) [L112] EXPR sf_u.value [L112] (a) = sf_u.value [L115] ieee_float_shape_type sf_u; [L116] sf_u.word = (hb) [L117] EXPR sf_u.value [L117] (b) = sf_u.value [L119] COND TRUE (ha - hb) > 0xf000000L [L120] return a + b; VAL [\old(x)=8589934610, \old(y)=8589934611, a=8589934612, b=8589934613, ha=251658241, hb=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934610, y=8589934611] [L234] RET, EXPR __ieee754_hypotf(x, y) [L234] float res = __ieee754_hypotf(x, y); [L236] CALL, EXPR isinf_float(res) [L214] __int32_t ix; VAL [\old(x)=8589934614, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934614] [L216] ieee_float_shape_type gf_u; [L217] gf_u.value = (x) [L218] EXPR gf_u.word [L218] (ix) = gf_u.word [L220] ix &= 0x7fffffff [L221] return ((ix) == 0x7f800000L); VAL [\old(x)=8589934614, \result=0, ix=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934614] [L236] RET, EXPR isinf_float(res) [L236] COND TRUE !isinf_float(res) [L237] reach_error() VAL [one_sqrt=1, res=8589934614, tiny_sqrt=1/1000000000000000000000000000000, x=8589934610, y=8589934611] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 96 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 121 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 121 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-10-17 10:44:00,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1270b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 35bac483b91a5ef1ca7e770e0d3fb7ad4f1fb6725ed9e57de7011eda6b44423e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:44:03,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:44:03,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:44:03,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:44:03,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:44:03,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:44:03,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:44:03,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:44:03,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:44:03,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:44:03,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:44:03,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:44:03,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:44:03,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:44:03,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:44:03,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:44:03,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:44:03,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:44:03,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:44:03,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:44:03,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:44:03,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:44:03,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:44:03,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:44:03,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:44:03,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:44:03,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:44:03,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:44:03,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:44:03,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:44:03,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:44:03,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:44:03,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:44:03,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:44:03,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:44:03,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:44:03,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:44:03,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:44:03,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:44:03,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:44:03,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:44:03,308 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-10-17 10:44:03,364 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:44:03,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:44:03,366 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:44:03,366 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:44:03,367 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:44:03,367 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:44:03,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:44:03,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:44:03,369 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:44:03,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:44:03,371 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:44:03,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:44:03,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:44:03,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:44:03,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:44:03,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:44:03,373 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:44:03,373 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 10:44:03,373 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 10:44:03,373 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:44:03,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:44:03,374 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:44:03,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:44:03,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:44:03,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:44:03,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:44:03,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:44:03,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:44:03,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:44:03,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:44:03,376 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-10-17 10:44:03,377 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 10:44:03,377 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:44:03,377 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:44:03,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:44:03,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 10:44:03,378 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35bac483b91a5ef1ca7e770e0d3fb7ad4f1fb6725ed9e57de7011eda6b44423e [2022-10-17 10:44:03,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:44:03,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:44:03,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:44:03,805 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:44:03,806 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:44:03,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/float-newlib/float_req_bl_1270b.c [2022-10-17 10:44:03,858 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/data/8de56f6a8/0c5feb986fd24946bd7d8cb7cfec15e5/FLAG1a6b545e2 [2022-10-17 10:44:04,458 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:44:04,458 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/sv-benchmarks/c/float-newlib/float_req_bl_1270b.c [2022-10-17 10:44:04,466 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/data/8de56f6a8/0c5feb986fd24946bd7d8cb7cfec15e5/FLAG1a6b545e2 [2022-10-17 10:44:04,794 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/data/8de56f6a8/0c5feb986fd24946bd7d8cb7cfec15e5 [2022-10-17 10:44:04,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:44:04,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:44:04,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:44:04,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:44:04,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:44:04,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:44:04" (1/1) ... [2022-10-17 10:44:04,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ba319fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:04, skipping insertion in model container [2022-10-17 10:44:04,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:44:04" (1/1) ... [2022-10-17 10:44:04,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:44:04,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:44:05,146 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_9b648bdc-144f-4dc6-a499-8d69fe3a5419/sv-benchmarks/c/float-newlib/float_req_bl_1270b.c[4704,4717] [2022-10-17 10:44:05,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:44:05,186 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:44:05,238 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_9b648bdc-144f-4dc6-a499-8d69fe3a5419/sv-benchmarks/c/float-newlib/float_req_bl_1270b.c[4704,4717] [2022-10-17 10:44:05,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:44:05,258 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:44:05,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:05 WrapperNode [2022-10-17 10:44:05,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:44:05,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:44:05,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:44:05,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:44:05,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:05" (1/1) ... [2022-10-17 10:44:05,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:05" (1/1) ... [2022-10-17 10:44:05,320 INFO L138 Inliner]: procedures = 21, calls = 75, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 254 [2022-10-17 10:44:05,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:44:05,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:44:05,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:44:05,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:44:05,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:05" (1/1) ... [2022-10-17 10:44:05,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:05" (1/1) ... [2022-10-17 10:44:05,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:05" (1/1) ... [2022-10-17 10:44:05,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:05" (1/1) ... [2022-10-17 10:44:05,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:05" (1/1) ... [2022-10-17 10:44:05,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:05" (1/1) ... [2022-10-17 10:44:05,408 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:05" (1/1) ... [2022-10-17 10:44:05,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:05" (1/1) ... [2022-10-17 10:44:05,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:44:05,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:44:05,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:44:05,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:44:05,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:05" (1/1) ... [2022-10-17 10:44:05,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:44:05,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:44:05,474 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:44:05,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:44:05,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:44:05,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 10:44:05,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:44:05,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-10-17 10:44:05,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-10-17 10:44:05,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:44:05,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:44:05,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-10-17 10:44:05,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-10-17 10:44:05,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:44:05,545 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2022-10-17 10:44:05,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2022-10-17 10:44:05,687 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:44:05,689 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:44:06,984 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:44:06,992 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:44:06,993 INFO L300 CfgBuilder]: Removed 34 assume(true) statements. [2022-10-17 10:44:06,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:44:06 BoogieIcfgContainer [2022-10-17 10:44:06,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:44:06,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:44:06,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:44:07,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:44:07,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:44:04" (1/3) ... [2022-10-17 10:44:07,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ebeaa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:44:07, skipping insertion in model container [2022-10-17 10:44:07,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:05" (2/3) ... [2022-10-17 10:44:07,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ebeaa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:44:07, skipping insertion in model container [2022-10-17 10:44:07,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:44:06" (3/3) ... [2022-10-17 10:44:07,005 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1270b.c [2022-10-17 10:44:07,022 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:44:07,023 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:44:07,078 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:44:07,086 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@63753377, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:44:07,087 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:44:07,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 84 states have (on average 1.6904761904761905) internal successors, (142), 85 states have internal predecessors, (142), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:44:07,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 10:44:07,100 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:07,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:07,102 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:07,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:07,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1724151004, now seen corresponding path program 1 times [2022-10-17 10:44:07,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:44:07,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219526066] [2022-10-17 10:44:07,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:07,123 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:44:07,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:44:07,129 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:44:07,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 10:44:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:07,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 10:44:07,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:44:07,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:07,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:44:07,351 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:44:07,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219526066] [2022-10-17 10:44:07,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219526066] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:07,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:07,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:44:07,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566371477] [2022-10-17 10:44:07,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:07,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:44:07,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:44:07,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:44:07,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:44:07,408 INFO L87 Difference]: Start difference. First operand has 89 states, 84 states have (on average 1.6904761904761905) internal successors, (142), 85 states have internal predecessors, (142), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2022-10-17 10:44:07,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:07,468 INFO L93 Difference]: Finished difference Result 176 states and 292 transitions. [2022-10-17 10:44:07,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:44:07,471 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) Word has length 16 [2022-10-17 10:44:07,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:07,485 INFO L225 Difference]: With dead ends: 176 [2022-10-17 10:44:07,485 INFO L226 Difference]: Without dead ends: 86 [2022-10-17 10:44:07,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:44:07,501 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:07,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:44:07,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-10-17 10:44:07,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-10-17 10:44:07,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 82 states have (on average 1.2682926829268293) internal successors, (104), 82 states have internal predecessors, (104), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:44:07,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 108 transitions. [2022-10-17 10:44:07,573 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 108 transitions. Word has length 16 [2022-10-17 10:44:07,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:07,574 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 108 transitions. [2022-10-17 10:44:07,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2022-10-17 10:44:07,577 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 108 transitions. [2022-10-17 10:44:07,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-17 10:44:07,579 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:07,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:07,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:44:07,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:44:07,797 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:07,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:07,798 INFO L85 PathProgramCache]: Analyzing trace with hash -927967701, now seen corresponding path program 1 times [2022-10-17 10:44:07,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:44:07,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223002647] [2022-10-17 10:44:07,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:07,800 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:44:07,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:44:07,806 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:44:07,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 10:44:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:08,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 33 conjunts are in the unsatisfiable core [2022-10-17 10:44:08,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:44:08,660 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 10:44:08,934 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-10-17 10:44:08,935 INFO L390 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 40 treesize of output 31 [2022-10-17 10:44:10,338 INFO L390 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 64 treesize of output 44 [2022-10-17 10:44:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:11,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:44:11,974 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:44:11,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1223002647] [2022-10-17 10:44:11,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1223002647] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:11,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:11,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-10-17 10:44:11,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475662635] [2022-10-17 10:44:11,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:11,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-17 10:44:11,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:44:11,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-17 10:44:11,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:44:11,978 INFO L87 Difference]: Start difference. First operand 86 states and 108 transitions. Second operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 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) [2022-10-17 10:44:14,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 10:44:15,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:15,833 INFO L93 Difference]: Finished difference Result 99 states and 121 transitions. [2022-10-17 10:44:15,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 10:44:15,838 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 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) Word has length 21 [2022-10-17 10:44:15,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:15,839 INFO L225 Difference]: With dead ends: 99 [2022-10-17 10:44:15,840 INFO L226 Difference]: Without dead ends: 91 [2022-10-17 10:44:15,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-10-17 10:44:15,842 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 19 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:15,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 684 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 105 Unchecked, 3.6s Time] [2022-10-17 10:44:15,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-10-17 10:44:15,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-10-17 10:44:15,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 87 states have (on average 1.2528735632183907) internal successors, (109), 87 states have internal predecessors, (109), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:44:15,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 113 transitions. [2022-10-17 10:44:15,855 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 113 transitions. Word has length 21 [2022-10-17 10:44:15,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:15,856 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 113 transitions. [2022-10-17 10:44:15,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 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) [2022-10-17 10:44:15,856 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 113 transitions. [2022-10-17 10:44:15,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-17 10:44:15,857 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:15,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:15,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:44:16,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:44:16,073 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:16,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:16,074 INFO L85 PathProgramCache]: Analyzing trace with hash -341161687, now seen corresponding path program 1 times [2022-10-17 10:44:16,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:44:16,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194674788] [2022-10-17 10:44:16,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:16,076 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:44:16,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:44:16,077 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:44:16,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 10:44:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:16,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-17 10:44:16,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:44:16,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:16,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:44:16,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:44:16,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194674788] [2022-10-17 10:44:16,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194674788] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:16,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:16,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:44:16,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138539961] [2022-10-17 10:44:16,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:16,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:44:16,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:44:16,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:44:16,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:44:16,829 INFO L87 Difference]: Start difference. First operand 91 states and 113 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2022-10-17 10:44:16,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:16,850 INFO L93 Difference]: Finished difference Result 137 states and 168 transitions. [2022-10-17 10:44:16,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:44:16,851 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) Word has length 21 [2022-10-17 10:44:16,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:16,853 INFO L225 Difference]: With dead ends: 137 [2022-10-17 10:44:16,854 INFO L226 Difference]: Without dead ends: 129 [2022-10-17 10:44:16,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:44:16,868 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 44 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 182 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:16,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 662 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 182 Unchecked, 0.0s Time] [2022-10-17 10:44:16,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-10-17 10:44:16,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 86. [2022-10-17 10:44:16,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 82 states have (on average 1.2560975609756098) internal successors, (103), 82 states have internal predecessors, (103), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:44:16,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 107 transitions. [2022-10-17 10:44:16,883 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 107 transitions. Word has length 21 [2022-10-17 10:44:16,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:16,884 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 107 transitions. [2022-10-17 10:44:16,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2022-10-17 10:44:16,885 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 107 transitions. [2022-10-17 10:44:16,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-17 10:44:16,886 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:16,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:16,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:44:17,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:44:17,102 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:17,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:17,103 INFO L85 PathProgramCache]: Analyzing trace with hash -637128605, now seen corresponding path program 1 times [2022-10-17 10:44:17,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:44:17,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242822108] [2022-10-17 10:44:17,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:17,104 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:44:17,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:44:17,105 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:44:17,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-10-17 10:44:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:17,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 10:44:17,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:44:17,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:17,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:44:17,632 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:44:17,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242822108] [2022-10-17 10:44:17,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242822108] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:17,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:17,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:44:17,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859137390] [2022-10-17 10:44:17,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:17,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:44:17,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:44:17,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:44:17,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:44:17,635 INFO L87 Difference]: Start difference. First operand 86 states and 107 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2022-10-17 10:44:17,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:17,647 INFO L93 Difference]: Finished difference Result 155 states and 193 transitions. [2022-10-17 10:44:17,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:44:17,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) Word has length 24 [2022-10-17 10:44:17,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:17,650 INFO L225 Difference]: With dead ends: 155 [2022-10-17 10:44:17,650 INFO L226 Difference]: Without dead ends: 92 [2022-10-17 10:44:17,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:44:17,652 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 0 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:17,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 373 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 29 Unchecked, 0.0s Time] [2022-10-17 10:44:17,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-10-17 10:44:17,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2022-10-17 10:44:17,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 88 states have (on average 1.2386363636363635) internal successors, (109), 88 states have internal predecessors, (109), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:44:17,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 113 transitions. [2022-10-17 10:44:17,668 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 113 transitions. Word has length 24 [2022-10-17 10:44:17,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:17,669 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 113 transitions. [2022-10-17 10:44:17,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2022-10-17 10:44:17,669 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 113 transitions. [2022-10-17 10:44:17,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-17 10:44:17,671 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:17,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:17,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:44:17,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:44:17,887 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:17,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:17,888 INFO L85 PathProgramCache]: Analyzing trace with hash 383939749, now seen corresponding path program 1 times [2022-10-17 10:44:17,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:44:17,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1591972161] [2022-10-17 10:44:17,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:17,889 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:44:17,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:44:17,890 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:44:17,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-10-17 10:44:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:18,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-17 10:44:18,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:44:18,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:18,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:44:18,478 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:44:18,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1591972161] [2022-10-17 10:44:18,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1591972161] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:18,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:18,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:44:18,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913399184] [2022-10-17 10:44:18,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:18,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:44:18,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:44:18,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:44:18,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:44:18,480 INFO L87 Difference]: Start difference. First operand 92 states and 113 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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) [2022-10-17 10:44:18,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:18,492 INFO L93 Difference]: Finished difference Result 158 states and 198 transitions. [2022-10-17 10:44:18,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:44:18,492 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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) Word has length 24 [2022-10-17 10:44:18,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:18,493 INFO L225 Difference]: With dead ends: 158 [2022-10-17 10:44:18,493 INFO L226 Difference]: Without dead ends: 96 [2022-10-17 10:44:18,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:44:18,495 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 4 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:18,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 478 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 64 Unchecked, 0.0s Time] [2022-10-17 10:44:18,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-10-17 10:44:18,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 93. [2022-10-17 10:44:18,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 89 states have (on average 1.2359550561797752) internal successors, (110), 89 states have internal predecessors, (110), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:44:18,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 114 transitions. [2022-10-17 10:44:18,508 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 114 transitions. Word has length 24 [2022-10-17 10:44:18,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:18,509 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 114 transitions. [2022-10-17 10:44:18,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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) [2022-10-17 10:44:18,509 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 114 transitions. [2022-10-17 10:44:18,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-17 10:44:18,510 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:18,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:18,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:44:18,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:44:18,723 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:18,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:18,724 INFO L85 PathProgramCache]: Analyzing trace with hash 753179498, now seen corresponding path program 1 times [2022-10-17 10:44:18,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:44:18,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804608935] [2022-10-17 10:44:18,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:18,725 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:44:18,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:44:18,726 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:44:18,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-10-17 10:44:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:18,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-17 10:44:18,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:44:19,038 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 10:44:19,398 INFO L390 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 37 treesize of output 21 [2022-10-17 10:44:19,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:19,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:44:19,630 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:44:19,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804608935] [2022-10-17 10:44:19,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804608935] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:19,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:19,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:44:19,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267034396] [2022-10-17 10:44:19,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:19,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:44:19,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:44:19,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:44:19,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:44:19,632 INFO L87 Difference]: Start difference. First operand 93 states and 114 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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) [2022-10-17 10:44:19,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:19,701 INFO L93 Difference]: Finished difference Result 105 states and 128 transitions. [2022-10-17 10:44:19,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:44:19,702 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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) Word has length 26 [2022-10-17 10:44:19,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:19,704 INFO L225 Difference]: With dead ends: 105 [2022-10-17 10:44:19,704 INFO L226 Difference]: Without dead ends: 96 [2022-10-17 10:44:19,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:44:19,706 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 6 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:19,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 685 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 93 Unchecked, 0.0s Time] [2022-10-17 10:44:19,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-10-17 10:44:19,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2022-10-17 10:44:19,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 92 states have (on average 1.25) internal successors, (115), 92 states have internal predecessors, (115), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:44:19,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 119 transitions. [2022-10-17 10:44:19,719 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 119 transitions. Word has length 26 [2022-10-17 10:44:19,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:19,719 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 119 transitions. [2022-10-17 10:44:19,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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) [2022-10-17 10:44:19,720 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 119 transitions. [2022-10-17 10:44:19,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-17 10:44:19,721 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:19,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:19,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:44:19,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:44:19,942 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:19,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:19,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1433237868, now seen corresponding path program 1 times [2022-10-17 10:44:19,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:44:19,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150623357] [2022-10-17 10:44:19,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:19,943 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:44:19,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:44:19,945 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:44:19,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-10-17 10:44:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:20,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 27 conjunts are in the unsatisfiable core [2022-10-17 10:44:20,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:44:21,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:21,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:44:21,333 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:44:21,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150623357] [2022-10-17 10:44:21,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150623357] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:21,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:21,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-10-17 10:44:21,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390797380] [2022-10-17 10:44:21,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:21,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 10:44:21,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:44:21,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 10:44:21,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:44:21,336 INFO L87 Difference]: Start difference. First operand 96 states and 119 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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) [2022-10-17 10:44:21,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:21,430 INFO L93 Difference]: Finished difference Result 116 states and 137 transitions. [2022-10-17 10:44:21,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 10:44:21,430 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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) Word has length 26 [2022-10-17 10:44:21,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:21,432 INFO L225 Difference]: With dead ends: 116 [2022-10-17 10:44:21,432 INFO L226 Difference]: Without dead ends: 106 [2022-10-17 10:44:21,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:44:21,434 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 12 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:21,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1053 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 97 Unchecked, 0.0s Time] [2022-10-17 10:44:21,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-10-17 10:44:21,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 96. [2022-10-17 10:44:21,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 92 states have (on average 1.2391304347826086) internal successors, (114), 92 states have internal predecessors, (114), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:44:21,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 118 transitions. [2022-10-17 10:44:21,446 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 118 transitions. Word has length 26 [2022-10-17 10:44:21,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:21,447 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 118 transitions. [2022-10-17 10:44:21,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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) [2022-10-17 10:44:21,447 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 118 transitions. [2022-10-17 10:44:21,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-17 10:44:21,448 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:21,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:21,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-10-17 10:44:21,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:44:21,668 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:21,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:21,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1040210858, now seen corresponding path program 1 times [2022-10-17 10:44:21,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:44:21,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039558698] [2022-10-17 10:44:21,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:21,669 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:44:21,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:44:21,670 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:44:21,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-10-17 10:44:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:21,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 10:44:21,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:44:22,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:22,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:44:22,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:44:22,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039558698] [2022-10-17 10:44:22,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2039558698] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:22,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:22,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:44:22,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233117958] [2022-10-17 10:44:22,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:22,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:44:22,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:44:22,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:44:22,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:44:22,196 INFO L87 Difference]: Start difference. First operand 96 states and 118 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2022-10-17 10:44:22,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:22,206 INFO L93 Difference]: Finished difference Result 105 states and 126 transitions. [2022-10-17 10:44:22,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:44:22,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) Word has length 26 [2022-10-17 10:44:22,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:22,208 INFO L225 Difference]: With dead ends: 105 [2022-10-17 10:44:22,208 INFO L226 Difference]: Without dead ends: 94 [2022-10-17 10:44:22,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:44:22,211 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 0 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:22,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 369 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 27 Unchecked, 0.0s Time] [2022-10-17 10:44:22,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-10-17 10:44:22,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-10-17 10:44:22,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 90 states have (on average 1.2333333333333334) internal successors, (111), 90 states have internal predecessors, (111), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:44:22,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 115 transitions. [2022-10-17 10:44:22,224 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 115 transitions. Word has length 26 [2022-10-17 10:44:22,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:22,224 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 115 transitions. [2022-10-17 10:44:22,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2022-10-17 10:44:22,225 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 115 transitions. [2022-10-17 10:44:22,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-17 10:44:22,231 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:22,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:22,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-10-17 10:44:22,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:44:22,448 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:22,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:22,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1547643092, now seen corresponding path program 1 times [2022-10-17 10:44:22,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:44:22,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [289296551] [2022-10-17 10:44:22,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:22,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:44:22,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:44:22,450 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:44:22,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-10-17 10:44:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:22,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-17 10:44:22,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:44:23,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:23,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:44:23,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:44:23,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [289296551] [2022-10-17 10:44:23,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [289296551] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:23,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:23,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:44:23,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499027907] [2022-10-17 10:44:23,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:23,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:44:23,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:44:23,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:44:23,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:44:23,470 INFO L87 Difference]: Start difference. First operand 94 states and 115 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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) [2022-10-17 10:44:23,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:23,482 INFO L93 Difference]: Finished difference Result 104 states and 125 transitions. [2022-10-17 10:44:23,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:44:23,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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) Word has length 26 [2022-10-17 10:44:23,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:23,486 INFO L225 Difference]: With dead ends: 104 [2022-10-17 10:44:23,486 INFO L226 Difference]: Without dead ends: 94 [2022-10-17 10:44:23,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:44:23,490 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 1 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:23,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 538 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 54 Unchecked, 0.0s Time] [2022-10-17 10:44:23,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-10-17 10:44:23,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-10-17 10:44:23,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 90 states have (on average 1.2222222222222223) internal successors, (110), 90 states have internal predecessors, (110), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:44:23,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 114 transitions. [2022-10-17 10:44:23,500 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 114 transitions. Word has length 26 [2022-10-17 10:44:23,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:23,501 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 114 transitions. [2022-10-17 10:44:23,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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) [2022-10-17 10:44:23,502 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 114 transitions. [2022-10-17 10:44:23,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-17 10:44:23,503 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:23,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:23,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-10-17 10:44:23,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:44:23,726 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:23,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:23,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1940670102, now seen corresponding path program 1 times [2022-10-17 10:44:23,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:44:23,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208030169] [2022-10-17 10:44:23,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:23,727 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:44:23,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:44:23,727 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:44:23,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-10-17 10:44:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:23,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 29 conjunts are in the unsatisfiable core [2022-10-17 10:44:23,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:44:24,243 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-17 10:44:24,916 INFO L390 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 37 treesize of output 21 [2022-10-17 10:44:25,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:25,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:44:25,339 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:44:25,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208030169] [2022-10-17 10:44:25,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208030169] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:25,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:25,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-10-17 10:44:25,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993569291] [2022-10-17 10:44:25,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:25,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-17 10:44:25,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:44:25,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-17 10:44:25,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:44:25,342 INFO L87 Difference]: Start difference. First operand 94 states and 114 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 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) [2022-10-17 10:44:25,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:25,432 INFO L93 Difference]: Finished difference Result 107 states and 126 transitions. [2022-10-17 10:44:25,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:44:25,433 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 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) Word has length 26 [2022-10-17 10:44:25,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:25,434 INFO L225 Difference]: With dead ends: 107 [2022-10-17 10:44:25,435 INFO L226 Difference]: Without dead ends: 98 [2022-10-17 10:44:25,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:44:25,436 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 7 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 163 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:25,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1067 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 163 Unchecked, 0.0s Time] [2022-10-17 10:44:25,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-10-17 10:44:25,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2022-10-17 10:44:25,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 90 states have (on average 1.211111111111111) internal successors, (109), 90 states have internal predecessors, (109), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:44:25,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 113 transitions. [2022-10-17 10:44:25,446 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 113 transitions. Word has length 26 [2022-10-17 10:44:25,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:25,447 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 113 transitions. [2022-10-17 10:44:25,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 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) [2022-10-17 10:44:25,447 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 113 transitions. [2022-10-17 10:44:25,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-17 10:44:25,452 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:25,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:25,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-10-17 10:44:25,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:44:25,667 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:25,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:25,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1260611732, now seen corresponding path program 1 times [2022-10-17 10:44:25,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:44:25,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1018166922] [2022-10-17 10:44:25,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:25,669 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:44:25,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:44:25,669 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:44:25,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-10-17 10:44:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:25,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-17 10:44:25,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:44:26,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:26,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:44:26,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:44:26,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1018166922] [2022-10-17 10:44:26,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1018166922] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:26,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:26,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:44:26,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904055748] [2022-10-17 10:44:26,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:26,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:44:26,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:44:26,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:44:26,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:44:26,378 INFO L87 Difference]: Start difference. First operand 94 states and 113 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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) [2022-10-17 10:44:26,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:26,395 INFO L93 Difference]: Finished difference Result 102 states and 120 transitions. [2022-10-17 10:44:26,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:44:26,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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) Word has length 26 [2022-10-17 10:44:26,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:26,397 INFO L225 Difference]: With dead ends: 102 [2022-10-17 10:44:26,397 INFO L226 Difference]: Without dead ends: 91 [2022-10-17 10:44:26,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:44:26,398 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 1 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:26,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 454 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 52 Unchecked, 0.0s Time] [2022-10-17 10:44:26,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-10-17 10:44:26,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2022-10-17 10:44:26,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 86 states have (on average 1.2093023255813953) internal successors, (104), 86 states have internal predecessors, (104), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:44:26,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2022-10-17 10:44:26,407 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 26 [2022-10-17 10:44:26,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:26,407 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2022-10-17 10:44:26,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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) [2022-10-17 10:44:26,408 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2022-10-17 10:44:26,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-17 10:44:26,408 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:26,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:26,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-10-17 10:44:26,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:44:26,623 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:26,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:26,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1214285036, now seen corresponding path program 1 times [2022-10-17 10:44:26,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:44:26,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552784792] [2022-10-17 10:44:26,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:26,624 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:44:26,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:44:26,625 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:44:26,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-10-17 10:44:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:26,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 10:44:26,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:44:27,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:27,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:44:27,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:44:27,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552784792] [2022-10-17 10:44:27,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552784792] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:27,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:27,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:44:27,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619120999] [2022-10-17 10:44:27,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:27,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:44:27,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:44:27,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:44:27,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:44:27,115 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2022-10-17 10:44:27,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:27,125 INFO L93 Difference]: Finished difference Result 158 states and 192 transitions. [2022-10-17 10:44:27,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:44:27,125 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) Word has length 29 [2022-10-17 10:44:27,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:27,126 INFO L225 Difference]: With dead ends: 158 [2022-10-17 10:44:27,126 INFO L226 Difference]: Without dead ends: 84 [2022-10-17 10:44:27,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:44:27,128 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 0 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:27,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 23 Unchecked, 0.0s Time] [2022-10-17 10:44:27,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-10-17 10:44:27,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-10-17 10:44:27,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 80 states have (on average 1.2125) internal successors, (97), 80 states have internal predecessors, (97), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:44:27,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 101 transitions. [2022-10-17 10:44:27,136 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 101 transitions. Word has length 29 [2022-10-17 10:44:27,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:27,136 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 101 transitions. [2022-10-17 10:44:27,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2022-10-17 10:44:27,136 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 101 transitions. [2022-10-17 10:44:27,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-17 10:44:27,137 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:27,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:27,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-10-17 10:44:27,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:44:27,352 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:27,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:27,352 INFO L85 PathProgramCache]: Analyzing trace with hash 791583210, now seen corresponding path program 1 times [2022-10-17 10:44:27,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:44:27,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846625943] [2022-10-17 10:44:27,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:27,353 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:44:27,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:44:27,354 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:44:27,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-10-17 10:44:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:27,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-17 10:44:27,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:44:28,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:28,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:44:28,114 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:44:28,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846625943] [2022-10-17 10:44:28,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846625943] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:28,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:28,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:44:28,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042587167] [2022-10-17 10:44:28,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:28,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:44:28,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:44:28,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:44:28,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:44:28,116 INFO L87 Difference]: Start difference. First operand 84 states and 101 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2022-10-17 10:44:28,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:28,126 INFO L93 Difference]: Finished difference Result 137 states and 167 transitions. [2022-10-17 10:44:28,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:44:28,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) Word has length 29 [2022-10-17 10:44:28,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:28,128 INFO L225 Difference]: With dead ends: 137 [2022-10-17 10:44:28,128 INFO L226 Difference]: Without dead ends: 75 [2022-10-17 10:44:28,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:44:28,129 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 1 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:28,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 445 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 31 Unchecked, 0.0s Time] [2022-10-17 10:44:28,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-10-17 10:44:28,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2022-10-17 10:44:28,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 70 states have (on average 1.2) internal successors, (84), 70 states have internal predecessors, (84), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:44:28,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2022-10-17 10:44:28,138 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 29 [2022-10-17 10:44:28,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:28,138 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2022-10-17 10:44:28,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2022-10-17 10:44:28,139 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2022-10-17 10:44:28,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-10-17 10:44:28,140 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:28,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:28,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-10-17 10:44:28,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:44:28,355 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:28,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:28,356 INFO L85 PathProgramCache]: Analyzing trace with hash -644112787, now seen corresponding path program 1 times [2022-10-17 10:44:28,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:44:28,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692097835] [2022-10-17 10:44:28,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:28,356 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:44:28,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:44:28,357 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:44:28,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-10-17 10:44:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:28,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-17 10:44:28,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:44:29,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:29,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:44:29,813 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:44:29,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692097835] [2022-10-17 10:44:29,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692097835] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:29,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:29,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:44:29,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946517848] [2022-10-17 10:44:29,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:29,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:44:29,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:44:29,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:44:29,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:44:29,817 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:44:31,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:31,469 INFO L93 Difference]: Finished difference Result 120 states and 146 transitions. [2022-10-17 10:44:31,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:44:31,475 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2022-10-17 10:44:31,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:31,476 INFO L225 Difference]: With dead ends: 120 [2022-10-17 10:44:31,476 INFO L226 Difference]: Without dead ends: 77 [2022-10-17 10:44:31,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:44:31,478 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 9 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:31,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 406 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 64 Unchecked, 1.6s Time] [2022-10-17 10:44:31,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-10-17 10:44:31,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-10-17 10:44:31,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 73 states have internal predecessors, (87), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:44:31,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 91 transitions. [2022-10-17 10:44:31,486 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 91 transitions. Word has length 38 [2022-10-17 10:44:31,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:31,487 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 91 transitions. [2022-10-17 10:44:31,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:44:31,488 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 91 transitions. [2022-10-17 10:44:31,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-17 10:44:31,489 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:31,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:31,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b648bdc-144f-4dc6-a499-8d69fe3a5419/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0