./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1232a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc --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 f5978e6794574f24e5282dc6c0759b72c8b7ad9dd0acf1cc3c9d6f2352537904 --- 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-5e519f3 [2022-11-02 21:00:53,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:00:53,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:00:53,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:00:53,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:00:53,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:00:53,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:00:53,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:00:53,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:00:53,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:00:53,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:00:53,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:00:53,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:00:53,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:00:53,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:00:53,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:00:53,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:00:53,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:00:53,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:00:53,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:00:53,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:00:53,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:00:53,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:00:53,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:00:53,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:00:53,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:00:53,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:00:53,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:00:53,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:00:53,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:00:53,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:00:53,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:00:53,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:00:53,933 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:00:53,934 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:00:53,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:00:53,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:00:53,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:00:53,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:00:53,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:00:53,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:00:53,941 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:00:53,993 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:00:53,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:00:53,994 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:00:53,994 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:00:53,995 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:00:53,995 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:00:53,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:00:53,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:00:53,996 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:00:53,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:00:53,997 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:00:53,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:00:53,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:00:53,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:00:53,997 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:00:53,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:00:53,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:00:53,998 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:00:53,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:00:53,999 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:00:53,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:00:53,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:00:53,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:00:53,999 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:00:54,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:00:54,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:00:54,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:00:54,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:00:54,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:00:54,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:00:54,004 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:00:54,005 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:00:54,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:00:54,005 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_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5978e6794574f24e5282dc6c0759b72c8b7ad9dd0acf1cc3c9d6f2352537904 [2022-11-02 21:00:54,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:00:54,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:00:54,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:00:54,313 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:00:54,314 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:00:54,315 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/float-newlib/double_req_bl_1232a.c [2022-11-02 21:00:54,383 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/data/22a165660/216f692d1d974455904dc3800554c412/FLAG80ff97708 [2022-11-02 21:00:54,913 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:00:54,913 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/sv-benchmarks/c/float-newlib/double_req_bl_1232a.c [2022-11-02 21:00:54,922 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/data/22a165660/216f692d1d974455904dc3800554c412/FLAG80ff97708 [2022-11-02 21:00:55,273 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/data/22a165660/216f692d1d974455904dc3800554c412 [2022-11-02 21:00:55,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:00:55,280 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:00:55,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:00:55,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:00:55,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:00:55,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:00:55" (1/1) ... [2022-11-02 21:00:55,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fca9bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:55, skipping insertion in model container [2022-11-02 21:00:55,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:00:55" (1/1) ... [2022-11-02 21:00:55,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:00:55,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:00:55,571 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_9329fc37-6a82-4ef9-b06b-f06a1c427267/sv-benchmarks/c/float-newlib/double_req_bl_1232a.c[1957,1970] [2022-11-02 21:00:55,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:00:55,582 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:00:55,605 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_9329fc37-6a82-4ef9-b06b-f06a1c427267/sv-benchmarks/c/float-newlib/double_req_bl_1232a.c[1957,1970] [2022-11-02 21:00:55,606 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:00:55,620 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:00:55,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:55 WrapperNode [2022-11-02 21:00:55,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:00:55,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:00:55,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:00:55,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:00:55,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:55" (1/1) ... [2022-11-02 21:00:55,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:55" (1/1) ... [2022-11-02 21:00:55,661 INFO L138 Inliner]: procedures = 19, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2022-11-02 21:00:55,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:00:55,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:00:55,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:00:55,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:00:55,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:55" (1/1) ... [2022-11-02 21:00:55,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:55" (1/1) ... [2022-11-02 21:00:55,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:55" (1/1) ... [2022-11-02 21:00:55,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:55" (1/1) ... [2022-11-02 21:00:55,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:55" (1/1) ... [2022-11-02 21:00:55,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:55" (1/1) ... [2022-11-02 21:00:55,689 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:55" (1/1) ... [2022-11-02 21:00:55,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:55" (1/1) ... [2022-11-02 21:00:55,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:00:55,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:00:55,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:00:55,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:00:55,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:55" (1/1) ... [2022-11-02 21:00:55,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:00:55,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:55,736 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:00:55,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:00:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:00:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:00:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:00:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2022-11-02 21:00:55,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2022-11-02 21:00:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-02 21:00:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:00:55,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:00:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:00:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:00:55,851 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:00:55,853 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:00:56,031 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:00:56,037 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:00:56,037 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-02 21:00:56,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:00:56 BoogieIcfgContainer [2022-11-02 21:00:56,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:00:56,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:00:56,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:00:56,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:00:56,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:00:55" (1/3) ... [2022-11-02 21:00:56,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59175c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:00:56, skipping insertion in model container [2022-11-02 21:00:56,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:55" (2/3) ... [2022-11-02 21:00:56,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59175c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:00:56, skipping insertion in model container [2022-11-02 21:00:56,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:00:56" (3/3) ... [2022-11-02 21:00:56,048 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a.c [2022-11-02 21:00:56,076 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:00:56,092 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:00:56,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:00:56,175 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;@53caeb78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:00:56,176 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:00:56,180 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 27 states have internal predecessors, (40), 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) [2022-11-02 21:00:56,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 21:00:56,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:56,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:56,191 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:56,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:56,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1634587165, now seen corresponding path program 1 times [2022-11-02 21:00:56,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:56,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722099097] [2022-11-02 21:00:56,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:56,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:00:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:56,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:56,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722099097] [2022-11-02 21:00:56,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722099097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:56,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:56,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:00:56,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566855361] [2022-11-02 21:00:56,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:56,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:56,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:56,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:56,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:56,577 INFO L87 Difference]: Start difference. First operand has 31 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 27 states have internal predecessors, (40), 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 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2022-11-02 21:00:56,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:56,648 INFO L93 Difference]: Finished difference Result 59 states and 86 transitions. [2022-11-02 21:00:56,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:00:56,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 14 [2022-11-02 21:00:56,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:56,687 INFO L225 Difference]: With dead ends: 59 [2022-11-02 21:00:56,687 INFO L226 Difference]: Without dead ends: 28 [2022-11-02 21:00:56,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:56,704 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:56,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 71 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:56,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-02 21:00:56,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-02 21:00:56,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 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) [2022-11-02 21:00:56,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2022-11-02 21:00:56,769 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 14 [2022-11-02 21:00:56,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:56,770 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2022-11-02 21:00:56,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2022-11-02 21:00:56,772 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2022-11-02 21:00:56,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 21:00:56,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:56,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:56,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:00:56,778 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:56,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:56,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1992797582, now seen corresponding path program 1 times [2022-11-02 21:00:56,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:56,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257538364] [2022-11-02 21:00:56,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:56,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:00:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:57,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:57,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:57,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257538364] [2022-11-02 21:00:57,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257538364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:57,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:57,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:57,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40897115] [2022-11-02 21:00:57,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:57,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:57,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:57,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:57,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:57,059 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-02 21:00:57,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:57,116 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2022-11-02 21:00:57,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:57,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 15 [2022-11-02 21:00:57,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:57,120 INFO L225 Difference]: With dead ends: 41 [2022-11-02 21:00:57,120 INFO L226 Difference]: Without dead ends: 32 [2022-11-02 21:00:57,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:57,122 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:57,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 118 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:57,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-02 21:00:57,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-02 21:00:57,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 21:00:57,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2022-11-02 21:00:57,132 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 15 [2022-11-02 21:00:57,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:57,132 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2022-11-02 21:00:57,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-02 21:00:57,133 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2022-11-02 21:00:57,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 21:00:57,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:57,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:57,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:00:57,135 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:57,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:57,135 INFO L85 PathProgramCache]: Analyzing trace with hash -118167546, now seen corresponding path program 1 times [2022-11-02 21:00:57,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:57,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210156817] [2022-11-02 21:00:57,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:57,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:57,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:00:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:57,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:57,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:57,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210156817] [2022-11-02 21:00:57,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210156817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:57,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:57,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:57,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996977247] [2022-11-02 21:00:57,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:57,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:57,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:57,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:57,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:57,281 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-11-02 21:00:57,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:57,349 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2022-11-02 21:00:57,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:57,350 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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 16 [2022-11-02 21:00:57,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:57,351 INFO L225 Difference]: With dead ends: 45 [2022-11-02 21:00:57,351 INFO L226 Difference]: Without dead ends: 36 [2022-11-02 21:00:57,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:57,353 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:57,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 134 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:00:57,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-02 21:00:57,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2022-11-02 21:00:57,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 21:00:57,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2022-11-02 21:00:57,360 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 16 [2022-11-02 21:00:57,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:57,361 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2022-11-02 21:00:57,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-11-02 21:00:57,361 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2022-11-02 21:00:57,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 21:00:57,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:57,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:57,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:00:57,363 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:57,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:57,363 INFO L85 PathProgramCache]: Analyzing trace with hash -774061834, now seen corresponding path program 1 times [2022-11-02 21:00:57,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:57,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943600944] [2022-11-02 21:00:57,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:57,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:57,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:00:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:57,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:57,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:57,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943600944] [2022-11-02 21:00:57,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943600944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:57,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:57,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:57,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530777258] [2022-11-02 21:00:57,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:57,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:57,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:57,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:57,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:57,489 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-11-02 21:00:57,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:57,541 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2022-11-02 21:00:57,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:57,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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 17 [2022-11-02 21:00:57,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:57,543 INFO L225 Difference]: With dead ends: 45 [2022-11-02 21:00:57,547 INFO L226 Difference]: Without dead ends: 36 [2022-11-02 21:00:57,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:57,549 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:57,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 134 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:57,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-02 21:00:57,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2022-11-02 21:00:57,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 21:00:57,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2022-11-02 21:00:57,563 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 17 [2022-11-02 21:00:57,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:57,564 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2022-11-02 21:00:57,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-11-02 21:00:57,564 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2022-11-02 21:00:57,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 21:00:57,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:57,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:57,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:00:57,577 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:57,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:57,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1728168458, now seen corresponding path program 1 times [2022-11-02 21:00:57,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:57,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773549880] [2022-11-02 21:00:57,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:57,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:57,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:00:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:57,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:57,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:57,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773549880] [2022-11-02 21:00:57,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773549880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:57,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:57,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:57,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974522525] [2022-11-02 21:00:57,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:57,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:57,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:57,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:57,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:57,786 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-11-02 21:00:57,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:57,822 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2022-11-02 21:00:57,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:57,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 18 [2022-11-02 21:00:57,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:57,824 INFO L225 Difference]: With dead ends: 45 [2022-11-02 21:00:57,824 INFO L226 Difference]: Without dead ends: 36 [2022-11-02 21:00:57,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:57,826 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:57,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 134 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:57,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-02 21:00:57,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2022-11-02 21:00:57,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 21:00:57,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2022-11-02 21:00:57,833 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 18 [2022-11-02 21:00:57,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:57,833 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2022-11-02 21:00:57,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-11-02 21:00:57,834 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2022-11-02 21:00:57,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 21:00:57,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:57,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:57,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:00:57,835 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:57,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:57,836 INFO L85 PathProgramCache]: Analyzing trace with hash -79286005, now seen corresponding path program 1 times [2022-11-02 21:00:57,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:57,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369040891] [2022-11-02 21:00:57,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:57,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:00:57,850 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:00:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:00:57,877 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:00:57,877 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:00:57,878 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 21:00:57,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:00:57,884 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-02 21:00:57,887 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:00:57,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:00:57 BoogieIcfgContainer [2022-11-02 21:00:57,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:00:57,912 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:00:57,912 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:00:57,913 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:00:57,913 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:00:56" (3/4) ... [2022-11-02 21:00:57,916 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 21:00:57,916 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:00:57,917 INFO L158 Benchmark]: Toolchain (without parser) took 2637.70ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 80.4MB in the beginning and 73.6MB in the end (delta: 6.7MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. [2022-11-02 21:00:57,918 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 104.9MB. Free memory is still 61.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:00:57,918 INFO L158 Benchmark]: CACSL2BoogieTranslator took 338.90ms. Allocated memory is still 104.9MB. Free memory was 80.1MB in the beginning and 79.4MB in the end (delta: 633.6kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 21:00:57,919 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.39ms. Allocated memory is still 104.9MB. Free memory was 79.4MB in the beginning and 77.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:00:57,919 INFO L158 Benchmark]: Boogie Preprocessor took 30.20ms. Allocated memory is still 104.9MB. Free memory was 77.7MB in the beginning and 76.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:00:57,920 INFO L158 Benchmark]: RCFGBuilder took 346.56ms. Allocated memory is still 104.9MB. Free memory was 76.4MB in the beginning and 63.2MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 21:00:57,920 INFO L158 Benchmark]: TraceAbstraction took 1870.12ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 62.7MB in the beginning and 74.7MB in the end (delta: -11.9MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2022-11-02 21:00:57,921 INFO L158 Benchmark]: Witness Printer took 4.34ms. Allocated memory is still 125.8MB. Free memory was 74.7MB in the beginning and 73.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:00:57,923 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 104.9MB. Free memory is still 61.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 338.90ms. Allocated memory is still 104.9MB. Free memory was 80.1MB in the beginning and 79.4MB in the end (delta: 633.6kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.39ms. Allocated memory is still 104.9MB. Free memory was 79.4MB in the beginning and 77.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.20ms. Allocated memory is still 104.9MB. Free memory was 77.7MB in the beginning and 76.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 346.56ms. Allocated memory is still 104.9MB. Free memory was 76.4MB in the beginning and 63.2MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1870.12ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 62.7MB in the beginning and 74.7MB in the end (delta: -11.9MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Witness Printer took 4.34ms. Allocated memory is still 125.8MB. Free memory was 74.7MB in the beginning and 73.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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: 82]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 81, overapproximation of someUnaryDOUBLEoperation at line 77. Possible FailurePath: [L76] double x = 0.0; [L77] double y = -0.0; [L78] CALL, EXPR fmin_double(x, y) [L48] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0] [L21] __uint32_t msw, lsw; VAL [\old(x)=0, x=0] [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=0, lsw=4294967297, msw=4293918721, x=0] [L33-L34] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=0, lsw=4294967297, msw=4293918721, x=0] [L36-L37] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=0, lsw=4294967297, msw=4293918721, x=0] [L40-L41] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L44] return 0; VAL [\old(x)=0, \result=0, lsw=4294967297, msw=4293918721, x=0] [L48] RET, EXPR __fpclassify_double(x) VAL [\old(x)=0, \old(y)=4294967304, __fpclassify_double(x)=0, x=0, y=4294967304] [L48] COND TRUE __fpclassify_double(x) == 0 [L49] return y; VAL [\old(x)=0, \old(y)=4294967304, \result=4294967304, x=0, y=4294967304] [L78] RET, EXPR fmin_double(x, y) [L78] double res = fmin_double(x, y); [L81] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=4294967304, res == -0.0 && __signbit_double(res) == 1=0, x=0, y=4294967304] [L81] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L82] reach_error() VAL [res=4294967304, x=0, y=4294967304] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 591 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 406 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 95 IncrementalHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 185 mSDtfsCounter, 95 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=2, InterpolantAutomatonStates: 23, 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, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 191 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 [2022-11-02 21:00:57,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/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/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc --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 f5978e6794574f24e5282dc6c0759b72c8b7ad9dd0acf1cc3c9d6f2352537904 --- 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-5e519f3 [2022-11-02 21:01:00,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:01:00,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:01:00,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:01:00,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:01:00,307 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:01:00,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:01:00,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:01:00,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:01:00,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:01:00,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:01:00,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:01:00,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:01:00,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:01:00,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:01:00,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:01:00,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:01:00,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:01:00,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:01:00,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:01:00,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:01:00,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:01:00,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:01:00,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:01:00,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:01:00,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:01:00,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:01:00,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:01:00,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:01:00,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:01:00,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:01:00,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:01:00,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:01:00,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:01:00,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:01:00,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:01:00,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:01:00,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:01:00,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:01:00,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:01:00,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:01:00,377 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-02 21:01:00,416 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:01:00,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:01:00,416 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:01:00,417 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:01:00,417 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:01:00,418 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:01:00,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:01:00,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:01:00,420 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:01:00,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:01:00,421 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:01:00,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:01:00,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:01:00,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:01:00,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:01:00,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:01:00,423 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:01:00,423 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 21:01:00,423 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 21:01:00,423 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:01:00,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:01:00,424 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:01:00,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:01:00,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:01:00,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:01:00,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:01:00,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:01:00,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:01:00,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:01:00,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:01:00,426 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 21:01:00,426 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 21:01:00,427 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:01:00,427 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:01:00,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:01:00,428 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 21:01:00,428 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_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5978e6794574f24e5282dc6c0759b72c8b7ad9dd0acf1cc3c9d6f2352537904 [2022-11-02 21:01:00,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:01:00,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:01:00,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:01:00,840 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:01:00,841 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:01:00,842 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/float-newlib/double_req_bl_1232a.c [2022-11-02 21:01:00,921 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/data/cf38e3663/f376c1ddebca4e05a7e5cfcfdd7b603b/FLAG51cf44b48 [2022-11-02 21:01:01,470 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:01:01,475 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/sv-benchmarks/c/float-newlib/double_req_bl_1232a.c [2022-11-02 21:01:01,485 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/data/cf38e3663/f376c1ddebca4e05a7e5cfcfdd7b603b/FLAG51cf44b48 [2022-11-02 21:01:01,819 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/data/cf38e3663/f376c1ddebca4e05a7e5cfcfdd7b603b [2022-11-02 21:01:01,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:01:01,825 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:01:01,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:01:01,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:01:01,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:01:01,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:01:01" (1/1) ... [2022-11-02 21:01:01,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cd755ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:01, skipping insertion in model container [2022-11-02 21:01:01,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:01:01" (1/1) ... [2022-11-02 21:01:01,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:01:01,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:01:02,054 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_9329fc37-6a82-4ef9-b06b-f06a1c427267/sv-benchmarks/c/float-newlib/double_req_bl_1232a.c[1957,1970] [2022-11-02 21:01:02,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:01:02,073 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:01:02,142 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_9329fc37-6a82-4ef9-b06b-f06a1c427267/sv-benchmarks/c/float-newlib/double_req_bl_1232a.c[1957,1970] [2022-11-02 21:01:02,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:01:02,172 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:01:02,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:02 WrapperNode [2022-11-02 21:01:02,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:01:02,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:01:02,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:01:02,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:01:02,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:02" (1/1) ... [2022-11-02 21:01:02,191 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:02" (1/1) ... [2022-11-02 21:01:02,213 INFO L138 Inliner]: procedures = 22, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2022-11-02 21:01:02,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:01:02,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:01:02,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:01:02,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:01:02,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:02" (1/1) ... [2022-11-02 21:01:02,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:02" (1/1) ... [2022-11-02 21:01:02,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:02" (1/1) ... [2022-11-02 21:01:02,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:02" (1/1) ... [2022-11-02 21:01:02,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:02" (1/1) ... [2022-11-02 21:01:02,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:02" (1/1) ... [2022-11-02 21:01:02,272 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:02" (1/1) ... [2022-11-02 21:01:02,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:02" (1/1) ... [2022-11-02 21:01:02,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:01:02,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:01:02,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:01:02,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:01:02,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:02" (1/1) ... [2022-11-02 21:01:02,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:01:02,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:02,320 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:01:02,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:01:02,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:01:02,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2022-11-02 21:01:02,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-02 21:01:02,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:01:02,364 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2022-11-02 21:01:02,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2022-11-02 21:01:02,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-02 21:01:02,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:01:02,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:01:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:01:02,446 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:01:02,460 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:01:02,756 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:01:02,763 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:01:02,763 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-02 21:01:02,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:01:02 BoogieIcfgContainer [2022-11-02 21:01:02,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:01:02,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:01:02,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:01:02,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:01:02,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:01:01" (1/3) ... [2022-11-02 21:01:02,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@415a9c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:01:02, skipping insertion in model container [2022-11-02 21:01:02,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:02" (2/3) ... [2022-11-02 21:01:02,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@415a9c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:01:02, skipping insertion in model container [2022-11-02 21:01:02,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:01:02" (3/3) ... [2022-11-02 21:01:02,775 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a.c [2022-11-02 21:01:02,833 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:01:02,833 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:01:02,919 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:01:02,930 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;@58925696, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:01:02,930 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:01:02,936 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 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) [2022-11-02 21:01:02,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:01:02,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:02,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:02,949 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:02,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:02,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1130952206, now seen corresponding path program 1 times [2022-11-02 21:01:02,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:02,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52770529] [2022-11-02 21:01:02,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:02,976 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:02,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:02,984 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:03,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 21:01:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:03,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-02 21:01:03,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:03,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:03,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:03,175 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:03,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52770529] [2022-11-02 21:01:03,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52770529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:03,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:03,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:01:03,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209604061] [2022-11-02 21:01:03,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:03,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 21:01:03,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:03,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 21:01:03,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:01:03,230 INFO L87 Difference]: Start difference. First operand has 29 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-11-02 21:01:03,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:03,262 INFO L93 Difference]: Finished difference Result 55 states and 82 transitions. [2022-11-02 21:01:03,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 21:01:03,264 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 13 [2022-11-02 21:01:03,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:03,276 INFO L225 Difference]: With dead ends: 55 [2022-11-02 21:01:03,276 INFO L226 Difference]: Without dead ends: 26 [2022-11-02 21:01:03,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:01:03,294 INFO L413 NwaCegarLoop]: 37 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, 37 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 [2022-11-02 21:01:03,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:01:03,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-02 21:01:03,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-02 21:01:03,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 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) [2022-11-02 21:01:03,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2022-11-02 21:01:03,355 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 13 [2022-11-02 21:01:03,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:03,356 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2022-11-02 21:01:03,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-11-02 21:01:03,357 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2022-11-02 21:01:03,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 21:01:03,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:03,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:03,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:03,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:03,585 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:03,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:03,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1285201507, now seen corresponding path program 1 times [2022-11-02 21:01:03,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:03,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778262110] [2022-11-02 21:01:03,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:03,593 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:03,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:03,594 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:03,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 21:01:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:03,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:01:03,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:03,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:03,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:03,784 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:03,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778262110] [2022-11-02 21:01:03,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778262110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:03,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:03,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:01:03,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135936905] [2022-11-02 21:01:03,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:03,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:01:03,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:03,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:01:03,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:01:03,797 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-11-02 21:01:03,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:03,845 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2022-11-02 21:01:03,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:01:03,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 14 [2022-11-02 21:01:03,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:03,850 INFO L225 Difference]: With dead ends: 38 [2022-11-02 21:01:03,850 INFO L226 Difference]: Without dead ends: 29 [2022-11-02 21:01:03,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:01:03,852 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:03,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:01:03,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-02 21:01:03,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-02 21:01:03,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 21:01:03,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2022-11-02 21:01:03,875 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 14 [2022-11-02 21:01:03,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:03,876 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2022-11-02 21:01:03,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-11-02 21:01:03,876 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2022-11-02 21:01:03,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 21:01:03,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:03,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:03,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:04,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:04,091 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:04,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:04,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1497908235, now seen corresponding path program 1 times [2022-11-02 21:01:04,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:04,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835172059] [2022-11-02 21:01:04,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:04,098 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:04,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:04,104 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:04,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 21:01:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:04,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:01:04,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:04,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:04,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:04,554 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:04,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835172059] [2022-11-02 21:01:04,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835172059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:04,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:04,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:01:04,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037722227] [2022-11-02 21:01:04,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:04,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:01:04,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:04,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:01:04,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:04,558 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2022-11-02 21:01:04,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:04,897 INFO L93 Difference]: Finished difference Result 56 states and 73 transitions. [2022-11-02 21:01:04,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:01:04,899 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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 15 [2022-11-02 21:01:04,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:04,900 INFO L225 Difference]: With dead ends: 56 [2022-11-02 21:01:04,900 INFO L226 Difference]: Without dead ends: 31 [2022-11-02 21:01:04,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:04,902 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 18 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:04,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 102 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 25 Unchecked, 0.3s Time] [2022-11-02 21:01:04,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-02 21:01:04,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-02 21:01:04,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.32) internal successors, (33), 26 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:01:04,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2022-11-02 21:01:04,910 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 15 [2022-11-02 21:01:04,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:04,911 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2022-11-02 21:01:04,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2022-11-02 21:01:04,912 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2022-11-02 21:01:04,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 21:01:04,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:04,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:04,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:05,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:05,131 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:05,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:05,132 INFO L85 PathProgramCache]: Analyzing trace with hash -2116811041, now seen corresponding path program 1 times [2022-11-02 21:01:05,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:05,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752217065] [2022-11-02 21:01:05,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:05,133 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:05,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:05,140 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:05,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 21:01:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:05,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:01:05,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:05,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:05,263 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:05,264 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:05,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752217065] [2022-11-02 21:01:05,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [752217065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:05,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:05,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:01:05,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969825968] [2022-11-02 21:01:05,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:05,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:01:05,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:05,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:01:05,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:01:05,266 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-11-02 21:01:05,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:05,963 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2022-11-02 21:01:05,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:01:05,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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 16 [2022-11-02 21:01:05,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:05,965 INFO L225 Difference]: With dead ends: 43 [2022-11-02 21:01:05,965 INFO L226 Difference]: Without dead ends: 34 [2022-11-02 21:01:05,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:01:05,967 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:05,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 99 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 21:01:05,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-02 21:01:05,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2022-11-02 21:01:05,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.32) internal successors, (33), 26 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:01:05,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2022-11-02 21:01:05,973 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 16 [2022-11-02 21:01:05,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:05,973 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2022-11-02 21:01:05,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-11-02 21:01:05,974 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2022-11-02 21:01:05,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 21:01:05,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:05,974 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:05,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-11-02 21:01:06,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:06,197 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:06,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:06,197 INFO L85 PathProgramCache]: Analyzing trace with hash 172315143, now seen corresponding path program 1 times [2022-11-02 21:01:06,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:06,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1280054676] [2022-11-02 21:01:06,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:06,198 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:06,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:06,199 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:06,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 21:01:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:06,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:01:06,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:06,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:06,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:06,436 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:06,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1280054676] [2022-11-02 21:01:06,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1280054676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:06,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:06,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:01:06,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627363997] [2022-11-02 21:01:06,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:06,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:01:06,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:06,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:01:06,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:06,439 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-11-02 21:01:06,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:06,512 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2022-11-02 21:01:06,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:01:06,516 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 17 [2022-11-02 21:01:06,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:06,517 INFO L225 Difference]: With dead ends: 57 [2022-11-02 21:01:06,517 INFO L226 Difference]: Without dead ends: 30 [2022-11-02 21:01:06,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:06,519 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:06,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 88 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 25 Unchecked, 0.0s Time] [2022-11-02 21:01:06,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-02 21:01:06,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2022-11-02 21:01:06,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 21:01:06,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2022-11-02 21:01:06,526 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 17 [2022-11-02 21:01:06,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:06,526 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2022-11-02 21:01:06,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-11-02 21:01:06,527 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2022-11-02 21:01:06,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 21:01:06,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:06,528 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:06,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:06,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:06,729 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:06,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:06,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1943218574, now seen corresponding path program 1 times [2022-11-02 21:01:06,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:06,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238391500] [2022-11-02 21:01:06,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:06,730 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:06,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:06,731 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:06,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 21:01:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:06,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:01:06,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:06,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:01:06,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:06,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:06,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238391500] [2022-11-02 21:01:06,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [238391500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:06,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:06,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:01:06,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302957792] [2022-11-02 21:01:06,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:06,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:01:06,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:06,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:01:06,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:01:06,841 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:01:07,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:07,472 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2022-11-02 21:01:07,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:01:07,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-02 21:01:07,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:07,475 INFO L225 Difference]: With dead ends: 40 [2022-11-02 21:01:07,475 INFO L226 Difference]: Without dead ends: 31 [2022-11-02 21:01:07,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:01:07,476 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:07,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:01:07,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-02 21:01:07,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-02 21:01:07,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:01:07,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2022-11-02 21:01:07,482 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 22 [2022-11-02 21:01:07,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:07,482 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2022-11-02 21:01:07,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:01:07,483 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2022-11-02 21:01:07,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 21:01:07,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:07,483 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:07,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-11-02 21:01:07,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:07,689 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:07,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:07,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1682849308, now seen corresponding path program 1 times [2022-11-02 21:01:07,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:07,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [648241350] [2022-11-02 21:01:07,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:07,690 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:07,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:07,691 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:07,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 21:01:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:07,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:01:07,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:08,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:01:08,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:08,062 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:08,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [648241350] [2022-11-02 21:01:08,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [648241350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:08,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:08,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:01:08,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896145905] [2022-11-02 21:01:08,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:08,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:01:08,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:08,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:01:08,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:08,064 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:01:08,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:08,119 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2022-11-02 21:01:08,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:01:08,121 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-11-02 21:01:08,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:08,122 INFO L225 Difference]: With dead ends: 45 [2022-11-02 21:01:08,122 INFO L226 Difference]: Without dead ends: 31 [2022-11-02 21:01:08,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:08,123 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 16 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:08,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 102 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 19 Unchecked, 0.0s Time] [2022-11-02 21:01:08,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-02 21:01:08,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-02 21:01:08,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.24) internal successors, (31), 26 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:01:08,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2022-11-02 21:01:08,131 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 23 [2022-11-02 21:01:08,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:08,131 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2022-11-02 21:01:08,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:01:08,131 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2022-11-02 21:01:08,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-02 21:01:08,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:08,137 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:08,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:08,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:08,349 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:08,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:08,349 INFO L85 PathProgramCache]: Analyzing trace with hash 474937390, now seen corresponding path program 1 times [2022-11-02 21:01:08,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:08,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [487171701] [2022-11-02 21:01:08,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:08,354 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:08,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:08,355 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:08,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 21:01:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:08,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:01:08,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:08,501 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:01:08,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:08,501 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:08,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [487171701] [2022-11-02 21:01:08,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [487171701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:08,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:08,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:01:08,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103408342] [2022-11-02 21:01:08,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:08,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:01:08,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:08,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:01:08,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:01:08,503 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:01:08,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:08,583 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2022-11-02 21:01:08,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:01:08,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-11-02 21:01:08,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:08,584 INFO L225 Difference]: With dead ends: 41 [2022-11-02 21:01:08,584 INFO L226 Difference]: Without dead ends: 32 [2022-11-02 21:01:08,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:01:08,585 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:08,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 94 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:01:08,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-02 21:01:08,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2022-11-02 21:01:08,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 21:01:08,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-11-02 21:01:08,590 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 24 [2022-11-02 21:01:08,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:08,590 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-11-02 21:01:08,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:01:08,590 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-11-02 21:01:08,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-02 21:01:08,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:08,591 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:08,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:08,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:08,808 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:08,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:08,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1777787178, now seen corresponding path program 1 times [2022-11-02 21:01:08,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:08,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119542549] [2022-11-02 21:01:08,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:08,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:08,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:08,810 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:08,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 21:01:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:08,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:01:08,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:09,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 21:01:09,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:09,003 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:09,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119542549] [2022-11-02 21:01:09,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119542549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:09,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:09,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:01:09,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291310620] [2022-11-02 21:01:09,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:09,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:01:09,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:09,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:01:09,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:09,006 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:01:09,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:09,154 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2022-11-02 21:01:09,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:01:09,154 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-11-02 21:01:09,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:09,155 INFO L225 Difference]: With dead ends: 42 [2022-11-02 21:01:09,155 INFO L226 Difference]: Without dead ends: 39 [2022-11-02 21:01:09,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:01:09,156 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 34 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:09,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 114 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:01:09,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-02 21:01:09,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2022-11-02 21:01:09,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 21:01:09,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2022-11-02 21:01:09,161 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 24 [2022-11-02 21:01:09,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:09,162 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2022-11-02 21:01:09,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:01:09,162 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2022-11-02 21:01:09,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-02 21:01:09,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:09,163 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:09,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:09,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:09,364 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:09,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:09,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1835045480, now seen corresponding path program 1 times [2022-11-02 21:01:09,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:09,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289347948] [2022-11-02 21:01:09,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:09,365 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:09,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:09,366 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:09,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 21:01:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:09,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:01:09,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:09,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 21:01:09,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:09,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:09,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289347948] [2022-11-02 21:01:09,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289347948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:09,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:09,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:01:09,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258949719] [2022-11-02 21:01:09,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:09,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:01:09,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:09,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:01:09,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:01:09,557 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:01:09,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:09,573 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2022-11-02 21:01:09,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:01:09,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-11-02 21:01:09,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:09,574 INFO L225 Difference]: With dead ends: 41 [2022-11-02 21:01:09,574 INFO L226 Difference]: Without dead ends: 31 [2022-11-02 21:01:09,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:01:09,575 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:09,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 41 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:01:09,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-02 21:01:09,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-02 21:01:09,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 21:01:09,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-11-02 21:01:09,581 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 24 [2022-11-02 21:01:09,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:09,581 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-11-02 21:01:09,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:01:09,581 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-11-02 21:01:09,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 21:01:09,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:09,602 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:09,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:09,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:09,803 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:09,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:09,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1323122336, now seen corresponding path program 1 times [2022-11-02 21:01:09,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:09,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251895641] [2022-11-02 21:01:09,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:09,804 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:09,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:09,805 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:09,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 21:01:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:09,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:01:09,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:10,113 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:01:10,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:10,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:10,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251895641] [2022-11-02 21:01:10,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1251895641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:10,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:10,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:01:10,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027321777] [2022-11-02 21:01:10,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:10,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:01:10,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:10,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:01:10,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:10,116 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:01:10,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:10,217 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2022-11-02 21:01:10,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:01:10,218 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-11-02 21:01:10,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:10,219 INFO L225 Difference]: With dead ends: 42 [2022-11-02 21:01:10,219 INFO L226 Difference]: Without dead ends: 25 [2022-11-02 21:01:10,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:10,220 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 14 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:10,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 84 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 16 Unchecked, 0.1s Time] [2022-11-02 21:01:10,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-02 21:01:10,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-02 21:01:10,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 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) [2022-11-02 21:01:10,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-11-02 21:01:10,224 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 25 [2022-11-02 21:01:10,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:10,224 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-11-02 21:01:10,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:01:10,224 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-11-02 21:01:10,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 21:01:10,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:10,225 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:10,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:10,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:10,436 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:10,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:10,436 INFO L85 PathProgramCache]: Analyzing trace with hash 2065734315, now seen corresponding path program 1 times [2022-11-02 21:01:10,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:10,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948960741] [2022-11-02 21:01:10,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:10,437 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:10,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:10,438 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:10,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 21:01:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:10,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:01:10,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:10,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 21:01:10,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:10,753 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:10,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948960741] [2022-11-02 21:01:10,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [948960741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:10,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:10,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:01:10,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462358691] [2022-11-02 21:01:10,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:10,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:01:10,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:10,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:01:10,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:01:10,755 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:01:10,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:10,937 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-11-02 21:01:10,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:01:10,938 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2022-11-02 21:01:10,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:10,938 INFO L225 Difference]: With dead ends: 25 [2022-11-02 21:01:10,938 INFO L226 Difference]: Without dead ends: 0 [2022-11-02 21:01:10,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:01:10,939 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 18 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:10,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 130 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 7 Unchecked, 0.1s Time] [2022-11-02 21:01:10,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-02 21:01:10,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-02 21:01:10,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-02 21:01:10,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-02 21:01:10,941 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2022-11-02 21:01:10,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:10,941 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 21:01:10,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:01:10,941 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-02 21:01:10,941 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-02 21:01:10,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 21:01:10,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:11,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:11,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-02 21:01:11,287 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 44) no Hoare annotation was computed. [2022-11-02 21:01:11,288 INFO L899 garLoopResultBuilder]: For program point __fpclassify_doubleFINAL(lines 20 45) no Hoare annotation was computed. [2022-11-02 21:01:11,288 INFO L899 garLoopResultBuilder]: For program point L23-1(lines 23 28) no Hoare annotation was computed. [2022-11-02 21:01:11,288 INFO L895 garLoopResultBuilder]: At program point L23-2(lines 23 28) the Hoare annotation is: (= |__fpclassify_double_#in~x| __fpclassify_double_~x) [2022-11-02 21:01:11,288 INFO L899 garLoopResultBuilder]: For program point L23-3(lines 20 45) no Hoare annotation was computed. [2022-11-02 21:01:11,288 INFO L902 garLoopResultBuilder]: At program point __fpclassify_doubleENTRY(lines 20 45) the Hoare annotation is: true [2022-11-02 21:01:11,288 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 44) no Hoare annotation was computed. [2022-11-02 21:01:11,288 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 44) no Hoare annotation was computed. [2022-11-02 21:01:11,288 INFO L899 garLoopResultBuilder]: For program point __fpclassify_doubleEXIT(lines 20 45) no Hoare annotation was computed. [2022-11-02 21:01:11,288 INFO L899 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2022-11-02 21:01:11,289 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (and (= |ULTIMATE.start_fmin_double_~x#1| (_ +zero 11 53)) (= |ULTIMATE.start_fmin_double_~y#1| (fp.neg (_ +zero 11 53)))) [2022-11-02 21:01:11,289 INFO L899 garLoopResultBuilder]: For program point L48-1(lines 48 49) no Hoare annotation was computed. [2022-11-02 21:01:11,289 INFO L899 garLoopResultBuilder]: For program point L81-2(lines 81 84) no Hoare annotation was computed. [2022-11-02 21:01:11,289 INFO L895 garLoopResultBuilder]: At program point L65(lines 56 66) the Hoare annotation is: (and (= |ULTIMATE.start_fmin_double_~x#1| (_ +zero 11 53)) |ULTIMATE.start_main_#t~short12#1| (= (_ bv1 32) |ULTIMATE.start___signbit_double_#res#1|) (= |ULTIMATE.start_fmin_double_~y#1| (fp.neg (_ +zero 11 53)))) [2022-11-02 21:01:11,289 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-02 21:01:11,289 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-02 21:01:11,289 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-02 21:01:11,289 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 82) no Hoare annotation was computed. [2022-11-02 21:01:11,289 INFO L902 garLoopResultBuilder]: At program point L86(lines 68 87) the Hoare annotation is: true [2022-11-02 21:01:11,289 INFO L899 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2022-11-02 21:01:11,290 INFO L899 garLoopResultBuilder]: For program point L53-2(line 53) no Hoare annotation was computed. [2022-11-02 21:01:11,290 INFO L895 garLoopResultBuilder]: At program point L53-3(lines 47 54) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and (= |ULTIMATE.start_fmin_double_~x#1| (_ +zero 11 53)) (= |ULTIMATE.start_fmin_double_#res#1| .cse0) (= |ULTIMATE.start_fmin_double_~y#1| .cse0))) [2022-11-02 21:01:11,290 INFO L899 garLoopResultBuilder]: For program point L82(line 82) no Hoare annotation was computed. [2022-11-02 21:01:11,290 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-02 21:01:11,290 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (and (= |ULTIMATE.start_fmin_double_~x#1| (_ +zero 11 53)) (= |ULTIMATE.start_fmin_double_~y#1| (fp.neg (_ +zero 11 53)))) [2022-11-02 21:01:11,290 INFO L899 garLoopResultBuilder]: For program point L50-1(lines 50 51) no Hoare annotation was computed. [2022-11-02 21:01:11,290 INFO L899 garLoopResultBuilder]: For program point L59-1(lines 59 63) no Hoare annotation was computed. [2022-11-02 21:01:11,290 INFO L895 garLoopResultBuilder]: At program point L59-2(lines 59 63) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and (= |ULTIMATE.start_fmin_double_~x#1| (_ +zero 11 53)) |ULTIMATE.start_main_#t~short12#1| (= .cse0 |ULTIMATE.start___signbit_double_~x#1|) (= |ULTIMATE.start_fmin_double_#res#1| .cse0) (= |ULTIMATE.start_main_~res~0#1| .cse0) (= |ULTIMATE.start_fmin_double_~y#1| .cse0))) [2022-11-02 21:01:11,290 INFO L899 garLoopResultBuilder]: For program point L59-3(lines 59 63) no Hoare annotation was computed. [2022-11-02 21:01:11,294 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:11,296 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:01:11,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:01:11 BoogieIcfgContainer [2022-11-02 21:01:11,311 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:01:11,311 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:01:11,312 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:01:11,312 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:01:11,312 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:01:02" (3/4) ... [2022-11-02 21:01:11,315 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 21:01:11,321 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2022-11-02 21:01:11,325 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-02 21:01:11,325 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-11-02 21:01:11,326 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 21:01:11,326 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 21:01:11,350 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2022-11-02 21:01:11,350 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (x == ~Pluszero~LONGDOUBLE() && \result == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) [2022-11-02 21:01:11,351 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((x == ~Pluszero~LONGDOUBLE() && aux-res == -0.0 && __signbit_double(res) == 1-aux) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && \result == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && res == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) [2022-11-02 21:01:11,351 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((x == ~Pluszero~LONGDOUBLE() && aux-res == -0.0 && __signbit_double(res) == 1-aux) && 1bv32 == \result) && y == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) [2022-11-02 21:01:11,363 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 21:01:11,364 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:01:11,364 INFO L158 Benchmark]: Toolchain (without parser) took 9539.32ms. Allocated memory was 67.1MB in the beginning and 113.2MB in the end (delta: 46.1MB). Free memory was 48.2MB in the beginning and 83.0MB in the end (delta: -34.8MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2022-11-02 21:01:11,365 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 67.1MB. Free memory is still 47.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:01:11,365 INFO L158 Benchmark]: CACSL2BoogieTranslator took 346.77ms. Allocated memory is still 67.1MB. Free memory was 47.9MB in the beginning and 48.6MB in the end (delta: -710.6kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 21:01:11,365 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.95ms. Allocated memory is still 67.1MB. Free memory was 48.6MB in the beginning and 47.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:01:11,366 INFO L158 Benchmark]: Boogie Preprocessor took 61.61ms. Allocated memory is still 67.1MB. Free memory was 46.9MB in the beginning and 45.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:01:11,366 INFO L158 Benchmark]: RCFGBuilder took 488.82ms. Allocated memory is still 67.1MB. Free memory was 45.4MB in the beginning and 31.6MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-02 21:01:11,367 INFO L158 Benchmark]: TraceAbstraction took 8543.37ms. Allocated memory was 67.1MB in the beginning and 113.2MB in the end (delta: 46.1MB). Free memory was 31.0MB in the beginning and 86.1MB in the end (delta: -55.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:01:11,367 INFO L158 Benchmark]: Witness Printer took 52.23ms. Allocated memory is still 113.2MB. Free memory was 86.1MB in the beginning and 83.0MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 21:01:11,369 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 67.1MB. Free memory is still 47.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 346.77ms. Allocated memory is still 67.1MB. Free memory was 47.9MB in the beginning and 48.6MB in the end (delta: -710.6kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.95ms. Allocated memory is still 67.1MB. Free memory was 48.6MB in the beginning and 47.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 61.61ms. Allocated memory is still 67.1MB. Free memory was 46.9MB in the beginning and 45.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 488.82ms. Allocated memory is still 67.1MB. Free memory was 45.4MB in the beginning and 31.6MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8543.37ms. Allocated memory was 67.1MB in the beginning and 113.2MB in the end (delta: 46.1MB). Free memory was 31.0MB in the beginning and 86.1MB in the end (delta: -55.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 52.23ms. Allocated memory is still 113.2MB. Free memory was 86.1MB in the beginning and 83.0MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. 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 - PositiveResult [Line: 82]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.4s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 136 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 130 mSDsluCounter, 1068 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 92 IncrementalHoareTripleChecker+Unchecked, 718 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 155 IncrementalHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 350 mSDtfsCounter, 155 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 247 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=9, InterpolantAutomatonStates: 66, 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, 12 MinimizatonAttempts, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 16 PreInvPairs, 23 NumberOfFragments, 66 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 45 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 245 NumberOfCodeBlocks, 245 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 233 ConstructedInterpolants, 26 QuantifiedInterpolants, 891 SizeOfPredicates, 46 NumberOfNonLiveVariables, 891 ConjunctsInSsa, 89 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 42/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: (x == ~Pluszero~LONGDOUBLE() && \result == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((x == ~Pluszero~LONGDOUBLE() && aux-res == -0.0 && __signbit_double(res) == 1-aux) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && \result == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && res == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: ((x == ~Pluszero~LONGDOUBLE() && aux-res == -0.0 && __signbit_double(res) == 1-aux) && 1bv32 == \result) && y == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) RESULT: Ultimate proved your program to be correct! [2022-11-02 21:01:11,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9329fc37-6a82-4ef9-b06b-f06a1c427267/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE