./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro --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 98ed95c4a54f5ccebfa7d8542fee1c186675c886b13abb30be9edee4d8cb102c --- 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-8393723 [2022-11-18 18:38:57,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:38:57,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:38:57,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:38:57,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:38:57,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:38:57,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:38:57,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:38:57,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:38:57,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:38:57,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:38:57,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:38:57,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:38:57,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:38:57,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:38:57,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:38:57,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:38:57,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:38:57,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:38:57,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:38:57,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:38:57,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:38:57,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:38:57,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:38:57,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:38:57,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:38:57,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:38:57,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:38:57,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:38:57,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:38:57,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:38:57,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:38:57,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:38:58,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:38:58,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:38:58,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:38:58,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:38:58,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:38:58,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:38:58,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:38:58,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:38:58,007 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:38:58,047 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:38:58,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:38:58,048 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:38:58,049 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:38:58,050 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:38:58,050 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:38:58,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:38:58,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:38:58,051 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:38:58,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:38:58,052 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:38:58,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:38:58,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:38:58,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:38:58,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:38:58,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:38:58,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:38:58,054 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:38:58,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:38:58,055 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:38:58,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:38:58,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:38:58,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:38:58,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:38:58,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:38:58,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:38:58,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:38:58,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:38:58,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:38:58,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:38:58,059 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:38:58,059 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:38:58,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:38:58,060 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_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98ed95c4a54f5ccebfa7d8542fee1c186675c886b13abb30be9edee4d8cb102c [2022-11-18 18:38:58,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:38:58,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:38:58,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:38:58,364 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:38:58,367 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:38:58,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c [2022-11-18 18:38:58,452 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/data/20bd4ed9c/5477fdde4057463c9c23ba6d9bc3bd98/FLAG25b5c68e7 [2022-11-18 18:38:58,966 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:38:58,967 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c [2022-11-18 18:38:58,977 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/data/20bd4ed9c/5477fdde4057463c9c23ba6d9bc3bd98/FLAG25b5c68e7 [2022-11-18 18:38:59,305 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/data/20bd4ed9c/5477fdde4057463c9c23ba6d9bc3bd98 [2022-11-18 18:38:59,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:38:59,317 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:38:59,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:38:59,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:38:59,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:38:59,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:38:59" (1/1) ... [2022-11-18 18:38:59,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d698657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:59, skipping insertion in model container [2022-11-18 18:38:59,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:38:59" (1/1) ... [2022-11-18 18:38:59,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:38:59,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:38:59,705 WARN L234 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_aa890b0a-b240-4014-a9da-9eeacc56b5b1/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c[1995,2008] [2022-11-18 18:38:59,714 WARN L234 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_aa890b0a-b240-4014-a9da-9eeacc56b5b1/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c[2364,2377] [2022-11-18 18:38:59,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:38:59,805 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:38:59,835 WARN L234 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_aa890b0a-b240-4014-a9da-9eeacc56b5b1/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c[1995,2008] [2022-11-18 18:38:59,839 WARN L234 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_aa890b0a-b240-4014-a9da-9eeacc56b5b1/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c[2364,2377] [2022-11-18 18:38:59,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:38:59,903 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:38:59,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:59 WrapperNode [2022-11-18 18:38:59,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:38:59,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:38:59,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:38:59,906 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:38:59,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:59" (1/1) ... [2022-11-18 18:38:59,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:59" (1/1) ... [2022-11-18 18:38:59,965 INFO L138 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 175 [2022-11-18 18:38:59,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:38:59,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:38:59,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:38:59,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:38:59,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:59" (1/1) ... [2022-11-18 18:38:59,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:59" (1/1) ... [2022-11-18 18:38:59,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:59" (1/1) ... [2022-11-18 18:38:59,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:59" (1/1) ... [2022-11-18 18:39:00,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:59" (1/1) ... [2022-11-18 18:39:00,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:59" (1/1) ... [2022-11-18 18:39:00,013 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:59" (1/1) ... [2022-11-18 18:39:00,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:59" (1/1) ... [2022-11-18 18:39:00,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:39:00,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:39:00,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:39:00,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:39:00,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:59" (1/1) ... [2022-11-18 18:39:00,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:39:00,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:00,067 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:39:00,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:39:00,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:39:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-18 18:39:00,118 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-18 18:39:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:39:00,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:39:00,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:39:00,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 18:39:00,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 18:39:00,270 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:39:00,273 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:39:00,979 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:39:00,988 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:39:00,988 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 18:39:01,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:39:01 BoogieIcfgContainer [2022-11-18 18:39:01,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:39:01,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:39:01,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:39:01,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:39:01,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:38:59" (1/3) ... [2022-11-18 18:39:01,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b256e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:39:01, skipping insertion in model container [2022-11-18 18:39:01,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:59" (2/3) ... [2022-11-18 18:39:01,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b256e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:39:01, skipping insertion in model container [2022-11-18 18:39:01,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:39:01" (3/3) ... [2022-11-18 18:39:01,015 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_3a.c.cil.c [2022-11-18 18:39:01,044 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:39:01,044 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 18:39:01,106 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:39:01,114 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;@5ecb27ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:39:01,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 18:39:01,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 70 states have (on average 1.6285714285714286) internal successors, (114), 73 states have internal predecessors, (114), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 18:39:01,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 18:39:01,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:01,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:01,131 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:01,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:01,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1847035396, now seen corresponding path program 1 times [2022-11-18 18:39:01,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:01,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301247308] [2022-11-18 18:39:01,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:01,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:01,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:01,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:01,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301247308] [2022-11-18 18:39:01,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301247308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:01,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:01,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:39:01,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289038075] [2022-11-18 18:39:01,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:01,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:39:01,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:01,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:39:01,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:39:01,458 INFO L87 Difference]: Start difference. First operand has 80 states, 70 states have (on average 1.6285714285714286) internal successors, (114), 73 states have internal predecessors, (114), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-18 18:39:01,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:01,531 INFO L93 Difference]: Finished difference Result 155 states and 245 transitions. [2022-11-18 18:39:01,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:39:01,534 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 18:39:01,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:01,545 INFO L225 Difference]: With dead ends: 155 [2022-11-18 18:39:01,546 INFO L226 Difference]: Without dead ends: 71 [2022-11-18 18:39:01,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:39:01,554 INFO L413 NwaCegarLoop]: 115 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, 115 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 [2022-11-18 18:39:01,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:39:01,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-18 18:39:01,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-11-18 18:39:01,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 63 states have (on average 1.507936507936508) internal successors, (95), 64 states have internal predecessors, (95), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 18:39:01,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 104 transitions. [2022-11-18 18:39:01,606 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 104 transitions. Word has length 7 [2022-11-18 18:39:01,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:01,606 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 104 transitions. [2022-11-18 18:39:01,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-18 18:39:01,607 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 104 transitions. [2022-11-18 18:39:01,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 18:39:01,607 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:01,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:01,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:39:01,609 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:01,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:01,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1846975814, now seen corresponding path program 1 times [2022-11-18 18:39:01,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:01,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335809032] [2022-11-18 18:39:01,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:01,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:39:01,631 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:39:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:39:01,662 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:39:01,662 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:39:01,664 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-18 18:39:01,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-18 18:39:01,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:39:01,671 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-18 18:39:01,676 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 18:39:01,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 06:39:01 BoogieIcfgContainer [2022-11-18 18:39:01,710 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 18:39:01,711 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 18:39:01,711 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 18:39:01,711 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 18:39:01,712 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:39:01" (3/4) ... [2022-11-18 18:39:01,716 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-18 18:39:01,716 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 18:39:01,717 INFO L158 Benchmark]: Toolchain (without parser) took 2399.37ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 71.5MB in the beginning and 88.0MB in the end (delta: -16.5MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2022-11-18 18:39:01,717 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 102.8MB. Free memory is still 56.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:39:01,718 INFO L158 Benchmark]: CACSL2BoogieTranslator took 580.93ms. Allocated memory is still 102.8MB. Free memory was 71.2MB in the beginning and 75.7MB in the end (delta: -4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 18:39:01,719 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.48ms. Allocated memory is still 102.8MB. Free memory was 75.7MB in the beginning and 73.2MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 18:39:01,719 INFO L158 Benchmark]: Boogie Preprocessor took 53.15ms. Allocated memory is still 102.8MB. Free memory was 73.2MB in the beginning and 71.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:39:01,720 INFO L158 Benchmark]: RCFGBuilder took 980.17ms. Allocated memory is still 102.8MB. Free memory was 71.5MB in the beginning and 51.7MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-18 18:39:01,720 INFO L158 Benchmark]: TraceAbstraction took 706.90ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 50.8MB in the beginning and 88.7MB in the end (delta: -37.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:39:01,721 INFO L158 Benchmark]: Witness Printer took 5.47ms. Allocated memory is still 125.8MB. Free memory was 88.7MB in the beginning and 88.0MB in the end (delta: 654.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:39:01,724 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 102.8MB. Free memory is still 56.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 580.93ms. Allocated memory is still 102.8MB. Free memory was 71.2MB in the beginning and 75.7MB in the end (delta: -4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.48ms. Allocated memory is still 102.8MB. Free memory was 75.7MB in the beginning and 73.2MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.15ms. Allocated memory is still 102.8MB. Free memory was 73.2MB in the beginning and 71.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 980.17ms. Allocated memory is still 102.8MB. Free memory was 71.5MB in the beginning and 51.7MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 706.90ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 50.8MB in the beginning and 88.7MB in the end (delta: -37.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.47ms. Allocated memory is still 125.8MB. Free memory was 88.7MB in the beginning and 88.0MB in the end (delta: 654.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L320] COND TRUE __VERIFIER_nondet_int() [L321] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=53, x=53] [L47] COND TRUE !(result >= 0.0f && result < 1.5f) VAL [IN=53, x=53] [L48] reach_error() VAL [IN=53, x=53] - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 80 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 115 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 115 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-18 18:39:01,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro --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 98ed95c4a54f5ccebfa7d8542fee1c186675c886b13abb30be9edee4d8cb102c --- 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-8393723 [2022-11-18 18:39:04,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:39:04,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:39:04,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:39:04,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:39:04,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:39:04,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:39:04,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:39:04,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:39:04,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:39:04,512 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:39:04,513 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:39:04,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:39:04,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:39:04,520 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:39:04,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:39:04,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:39:04,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:39:04,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:39:04,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:39:04,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:39:04,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:39:04,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:39:04,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:39:04,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:39:04,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:39:04,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:39:04,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:39:04,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:39:04,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:39:04,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:39:04,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:39:04,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:39:04,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:39:04,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:39:04,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:39:04,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:39:04,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:39:04,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:39:04,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:39:04,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:39:04,581 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-18 18:39:04,632 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:39:04,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:39:04,634 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:39:04,634 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:39:04,635 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:39:04,636 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:39:04,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:39:04,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:39:04,638 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:39:04,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:39:04,640 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:39:04,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:39:04,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:39:04,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:39:04,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:39:04,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:39:04,642 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 18:39:04,642 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 18:39:04,642 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 18:39:04,643 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:39:04,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:39:04,643 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:39:04,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:39:04,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:39:04,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:39:04,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:39:04,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:39:04,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:39:04,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:39:04,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:39:04,646 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 18:39:04,646 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 18:39:04,647 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:39:04,647 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:39:04,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:39:04,648 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 18:39:04,648 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_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98ed95c4a54f5ccebfa7d8542fee1c186675c886b13abb30be9edee4d8cb102c [2022-11-18 18:39:05,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:39:05,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:39:05,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:39:05,167 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:39:05,170 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:39:05,172 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c [2022-11-18 18:39:05,256 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/data/495799a49/565d8c64fa724167aa962f72ad596b9f/FLAG2d5e6b8ce [2022-11-18 18:39:05,880 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:39:05,881 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c [2022-11-18 18:39:05,897 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/data/495799a49/565d8c64fa724167aa962f72ad596b9f/FLAG2d5e6b8ce [2022-11-18 18:39:06,185 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/data/495799a49/565d8c64fa724167aa962f72ad596b9f [2022-11-18 18:39:06,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:39:06,192 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:39:06,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:39:06,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:39:06,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:39:06,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:39:06" (1/1) ... [2022-11-18 18:39:06,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c773a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:06, skipping insertion in model container [2022-11-18 18:39:06,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:39:06" (1/1) ... [2022-11-18 18:39:06,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:39:06,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:39:06,446 WARN L234 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_aa890b0a-b240-4014-a9da-9eeacc56b5b1/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c[1995,2008] [2022-11-18 18:39:06,454 WARN L234 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_aa890b0a-b240-4014-a9da-9eeacc56b5b1/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c[2364,2377] [2022-11-18 18:39:06,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:39:06,591 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:39:06,622 WARN L234 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_aa890b0a-b240-4014-a9da-9eeacc56b5b1/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c[1995,2008] [2022-11-18 18:39:06,632 WARN L234 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_aa890b0a-b240-4014-a9da-9eeacc56b5b1/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c[2364,2377] [2022-11-18 18:39:06,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:39:06,713 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:39:06,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:06 WrapperNode [2022-11-18 18:39:06,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:39:06,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:39:06,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:39:06,716 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:39:06,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:06" (1/1) ... [2022-11-18 18:39:06,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:06" (1/1) ... [2022-11-18 18:39:06,798 INFO L138 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2022-11-18 18:39:06,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:39:06,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:39:06,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:39:06,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:39:06,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:06" (1/1) ... [2022-11-18 18:39:06,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:06" (1/1) ... [2022-11-18 18:39:06,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:06" (1/1) ... [2022-11-18 18:39:06,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:06" (1/1) ... [2022-11-18 18:39:06,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:06" (1/1) ... [2022-11-18 18:39:06,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:06" (1/1) ... [2022-11-18 18:39:06,873 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:06" (1/1) ... [2022-11-18 18:39:06,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:06" (1/1) ... [2022-11-18 18:39:06,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:39:06,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:39:06,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:39:06,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:39:06,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:06" (1/1) ... [2022-11-18 18:39:06,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:39:06,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:06,925 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:39:06,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:39:06,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:39:06,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 18:39:06,981 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-18 18:39:06,981 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-18 18:39:06,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:39:06,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:39:06,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 18:39:06,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 18:39:07,124 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:39:07,126 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:39:09,887 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:39:09,895 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:39:09,896 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 18:39:09,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:39:09 BoogieIcfgContainer [2022-11-18 18:39:09,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:39:09,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:39:09,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:39:09,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:39:09,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:39:06" (1/3) ... [2022-11-18 18:39:09,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec6fa62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:39:09, skipping insertion in model container [2022-11-18 18:39:09,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:06" (2/3) ... [2022-11-18 18:39:09,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec6fa62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:39:09, skipping insertion in model container [2022-11-18 18:39:09,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:39:09" (3/3) ... [2022-11-18 18:39:09,910 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_3a.c.cil.c [2022-11-18 18:39:09,931 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:39:09,932 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 18:39:10,002 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:39:10,011 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;@25494e32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:39:10,011 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 18:39:10,017 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 50 states have (on average 1.56) internal successors, (78), 53 states have internal predecessors, (78), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 18:39:10,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 18:39:10,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:10,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:10,027 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:10,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:10,034 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-11-18 18:39:10,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:39:10,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348680924] [2022-11-18 18:39:10,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:10,050 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:39:10,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:39:10,059 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:39:10,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-18 18:39:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:10,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 18:39:10,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:10,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:10,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:39:10,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:39:10,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348680924] [2022-11-18 18:39:10,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348680924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:10,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:10,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:39:10,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516927904] [2022-11-18 18:39:10,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:10,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:39:10,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:39:10,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:39:10,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:39:10,720 INFO L87 Difference]: Start difference. First operand has 60 states, 50 states have (on average 1.56) internal successors, (78), 53 states have internal predecessors, (78), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-18 18:39:10,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:10,765 INFO L93 Difference]: Finished difference Result 115 states and 173 transitions. [2022-11-18 18:39:10,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:39:10,767 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 18:39:10,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:10,776 INFO L225 Difference]: With dead ends: 115 [2022-11-18 18:39:10,776 INFO L226 Difference]: Without dead ends: 51 [2022-11-18 18:39:10,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:39:10,787 INFO L413 NwaCegarLoop]: 81 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, 81 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 [2022-11-18 18:39:10,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:39:10,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-18 18:39:10,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-18 18:39:10,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 44 states have internal predecessors, (61), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 18:39:10,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 70 transitions. [2022-11-18 18:39:10,853 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 70 transitions. Word has length 7 [2022-11-18 18:39:10,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:10,855 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 70 transitions. [2022-11-18 18:39:10,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-18 18:39:10,855 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 70 transitions. [2022-11-18 18:39:10,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 18:39:10,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:10,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:10,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:11,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:39:11,080 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:11,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:11,082 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-11-18 18:39:11,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:39:11,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295839865] [2022-11-18 18:39:11,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:11,087 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:39:11,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:39:11,088 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:39:11,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-18 18:41:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:19,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:41:19,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:41:34,341 WARN L837 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) |c_ULTIMATE.start_main1_~result~0#1|) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-11-18 18:42:08,136 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0))) (.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from false [2022-11-18 18:42:10,192 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0))) (.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from true [2022-11-18 18:42:10,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:10,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:10,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:42:10,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295839865] [2022-11-18 18:42:10,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295839865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:10,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:10,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:42:10,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050026804] [2022-11-18 18:42:10,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:10,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:42:10,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:42:10,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:42:10,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2022-11-18 18:42:10,198 INFO L87 Difference]: Start difference. First operand 51 states and 70 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2022-11-18 18:42:12,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-18 18:42:12,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:12,943 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2022-11-18 18:42:12,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:42:12,944 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 18:42:12,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:12,946 INFO L225 Difference]: With dead ends: 51 [2022-11-18 18:42:12,946 INFO L226 Difference]: Without dead ends: 46 [2022-11-18 18:42:12,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=18, Invalid=17, Unknown=3, NotChecked=18, Total=56 [2022-11-18 18:42:12,949 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 65 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 135 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:12,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 175 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 1 Unknown, 135 Unchecked, 2.5s Time] [2022-11-18 18:42:12,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-18 18:42:12,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-18 18:42:12,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 39 states have (on average 1.435897435897436) internal successors, (56), 39 states have internal predecessors, (56), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 18:42:12,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 65 transitions. [2022-11-18 18:42:12,961 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 65 transitions. Word has length 7 [2022-11-18 18:42:12,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:12,966 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 65 transitions. [2022-11-18 18:42:12,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2022-11-18 18:42:12,967 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 65 transitions. [2022-11-18 18:42:12,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 18:42:12,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:12,969 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:12,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:13,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:13,171 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:13,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:13,172 INFO L85 PathProgramCache]: Analyzing trace with hash 220430878, now seen corresponding path program 1 times [2022-11-18 18:42:13,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:42:13,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337037761] [2022-11-18 18:42:13,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:13,173 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:13,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:42:13,185 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:42:13,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-18 18:42:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:13,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:42:13,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:13,430 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 18:42:13,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:13,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:42:13,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337037761] [2022-11-18 18:42:13,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337037761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:13,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:13,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:42:13,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762402231] [2022-11-18 18:42:13,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:13,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:42:13,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:42:13,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:42:13,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:42:13,435 INFO L87 Difference]: Start difference. First operand 46 states and 65 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:42:13,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:13,853 INFO L93 Difference]: Finished difference Result 102 states and 148 transitions. [2022-11-18 18:42:13,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:42:13,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2022-11-18 18:42:13,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:13,858 INFO L225 Difference]: With dead ends: 102 [2022-11-18 18:42:13,858 INFO L226 Difference]: Without dead ends: 60 [2022-11-18 18:42:13,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:42:13,860 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 16 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:13,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 143 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:42:13,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-18 18:42:13,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2022-11-18 18:42:13,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 18:42:13,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 71 transitions. [2022-11-18 18:42:13,873 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 71 transitions. Word has length 42 [2022-11-18 18:42:13,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:13,874 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 71 transitions. [2022-11-18 18:42:13,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:42:13,874 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 71 transitions. [2022-11-18 18:42:13,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 18:42:13,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:13,876 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:13,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-11-18 18:42:14,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:14,089 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:14,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:14,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1744233432, now seen corresponding path program 1 times [2022-11-18 18:42:14,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:42:14,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515600922] [2022-11-18 18:42:14,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:14,091 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:14,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:42:14,093 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:42:14,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-18 18:42:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:14,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:42:14,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:14,387 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 18:42:14,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:14,390 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:42:14,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515600922] [2022-11-18 18:42:14,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515600922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:14,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:14,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:42:14,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235724154] [2022-11-18 18:42:14,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:14,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:42:14,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:42:14,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:42:14,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:42:14,396 INFO L87 Difference]: Start difference. First operand 51 states and 71 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:42:14,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:14,767 INFO L93 Difference]: Finished difference Result 106 states and 151 transitions. [2022-11-18 18:42:14,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:42:14,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 45 [2022-11-18 18:42:14,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:14,769 INFO L225 Difference]: With dead ends: 106 [2022-11-18 18:42:14,769 INFO L226 Difference]: Without dead ends: 63 [2022-11-18 18:42:14,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:42:14,771 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 10 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:14,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 157 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:42:14,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-18 18:42:14,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2022-11-18 18:42:14,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 48 states have internal predecessors, (65), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 18:42:14,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2022-11-18 18:42:14,783 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 45 [2022-11-18 18:42:14,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:14,783 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2022-11-18 18:42:14,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:42:14,784 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2022-11-18 18:42:14,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-18 18:42:14,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:14,786 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:14,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:14,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:14,995 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:14,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:14,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1089123319, now seen corresponding path program 1 times [2022-11-18 18:42:14,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:42:14,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927262210] [2022-11-18 18:42:14,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:14,997 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:14,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:42:14,998 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:42:15,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-18 18:42:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:15,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:42:15,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:15,239 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 18:42:15,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:15,240 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:42:15,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927262210] [2022-11-18 18:42:15,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1927262210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:15,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:15,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:42:15,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454093682] [2022-11-18 18:42:15,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:15,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:42:15,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:42:15,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:42:15,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:42:15,243 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:42:15,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:15,657 INFO L93 Difference]: Finished difference Result 115 states and 163 transitions. [2022-11-18 18:42:15,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:42:15,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-11-18 18:42:15,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:15,659 INFO L225 Difference]: With dead ends: 115 [2022-11-18 18:42:15,660 INFO L226 Difference]: Without dead ends: 67 [2022-11-18 18:42:15,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:42:15,661 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 17 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:15,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 150 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:42:15,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-18 18:42:15,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 57. [2022-11-18 18:42:15,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.375) internal successors, (66), 49 states have internal predecessors, (66), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 18:42:15,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 79 transitions. [2022-11-18 18:42:15,672 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 79 transitions. Word has length 46 [2022-11-18 18:42:15,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:15,673 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 79 transitions. [2022-11-18 18:42:15,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:42:15,673 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 79 transitions. [2022-11-18 18:42:15,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-18 18:42:15,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:15,679 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:15,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:15,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:15,892 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:15,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:15,893 INFO L85 PathProgramCache]: Analyzing trace with hash 957340839, now seen corresponding path program 1 times [2022-11-18 18:42:15,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:42:15,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [816791525] [2022-11-18 18:42:15,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:15,894 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:15,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:42:15,895 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:42:15,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-18 18:42:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:15,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:42:15,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:16,211 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 18:42:16,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:16,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:42:16,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [816791525] [2022-11-18 18:42:16,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [816791525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:16,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:16,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:42:16,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267395191] [2022-11-18 18:42:16,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:16,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:42:16,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:42:16,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:42:16,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:42:16,215 INFO L87 Difference]: Start difference. First operand 57 states and 79 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:42:16,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:16,889 INFO L93 Difference]: Finished difference Result 123 states and 174 transitions. [2022-11-18 18:42:16,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:42:16,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2022-11-18 18:42:16,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:16,891 INFO L225 Difference]: With dead ends: 123 [2022-11-18 18:42:16,892 INFO L226 Difference]: Without dead ends: 74 [2022-11-18 18:42:16,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:42:16,893 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 19 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:16,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 198 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 18:42:16,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-18 18:42:16,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 58. [2022-11-18 18:42:16,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 50 states have internal predecessors, (68), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 18:42:16,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 81 transitions. [2022-11-18 18:42:16,916 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 81 transitions. Word has length 47 [2022-11-18 18:42:16,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:16,918 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 81 transitions. [2022-11-18 18:42:16,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:42:16,918 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 81 transitions. [2022-11-18 18:42:16,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-18 18:42:16,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:16,924 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:16,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:17,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:17,125 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:17,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:17,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1066513524, now seen corresponding path program 1 times [2022-11-18 18:42:17,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:42:17,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659461037] [2022-11-18 18:42:17,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:17,126 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:17,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:42:17,127 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:42:17,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-18 18:42:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:17,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:42:17,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:17,438 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 18:42:17,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:42:18,076 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 18:42:18,076 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:42:18,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659461037] [2022-11-18 18:42:18,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659461037] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:42:18,077 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:42:18,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 18:42:18,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958761249] [2022-11-18 18:42:18,077 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:42:18,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:42:18,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:42:18,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:42:18,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:42:18,079 INFO L87 Difference]: Start difference. First operand 58 states and 81 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 18:42:19,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:19,186 INFO L93 Difference]: Finished difference Result 144 states and 206 transitions. [2022-11-18 18:42:19,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:42:19,187 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2022-11-18 18:42:19,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:19,188 INFO L225 Difference]: With dead ends: 144 [2022-11-18 18:42:19,188 INFO L226 Difference]: Without dead ends: 94 [2022-11-18 18:42:19,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:42:19,190 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 52 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:19,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 285 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 18:42:19,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-18 18:42:19,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 66. [2022-11-18 18:42:19,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 58 states have internal predecessors, (81), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 18:42:19,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 94 transitions. [2022-11-18 18:42:19,219 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 94 transitions. Word has length 48 [2022-11-18 18:42:19,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:19,219 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 94 transitions. [2022-11-18 18:42:19,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 18:42:19,220 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 94 transitions. [2022-11-18 18:42:19,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-18 18:42:19,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:19,227 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:19,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:19,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:19,440 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:19,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:19,441 INFO L85 PathProgramCache]: Analyzing trace with hash -588856565, now seen corresponding path program 1 times [2022-11-18 18:42:19,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:42:19,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542756668] [2022-11-18 18:42:19,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:19,442 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:19,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:42:19,444 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:42:19,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-18 18:42:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:19,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:42:19,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:19,867 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 18:42:19,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:42:20,578 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 18:42:20,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:42:20,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542756668] [2022-11-18 18:42:20,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1542756668] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:42:20,579 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:42:20,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-18 18:42:20,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448027719] [2022-11-18 18:42:20,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:42:20,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:42:20,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:42:20,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:42:20,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:42:20,582 INFO L87 Difference]: Start difference. First operand 66 states and 94 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 18:42:22,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:22,217 INFO L93 Difference]: Finished difference Result 162 states and 234 transitions. [2022-11-18 18:42:22,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 18:42:22,218 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 50 [2022-11-18 18:42:22,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:22,219 INFO L225 Difference]: With dead ends: 162 [2022-11-18 18:42:22,219 INFO L226 Difference]: Without dead ends: 104 [2022-11-18 18:42:22,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:42:22,220 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 139 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:22,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 250 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 18:42:22,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-18 18:42:22,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 70. [2022-11-18 18:42:22,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 62 states have internal predecessors, (88), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 18:42:22,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 101 transitions. [2022-11-18 18:42:22,236 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 101 transitions. Word has length 50 [2022-11-18 18:42:22,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:22,236 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 101 transitions. [2022-11-18 18:42:22,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 18:42:22,237 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 101 transitions. [2022-11-18 18:42:22,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-18 18:42:22,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:22,238 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:22,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-11-18 18:42:22,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:22,447 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:22,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:22,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1889085224, now seen corresponding path program 2 times [2022-11-18 18:42:22,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:42:22,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037772059] [2022-11-18 18:42:22,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:42:22,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:22,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:42:22,449 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:42:22,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-18 18:42:22,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:42:22,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:42:22,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:42:22,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:22,758 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-18 18:42:22,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:22,758 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:42:22,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037772059] [2022-11-18 18:42:22,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037772059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:22,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:22,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:42:22,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861885849] [2022-11-18 18:42:22,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:22,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:42:22,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:42:22,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:42:22,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:42:22,760 INFO L87 Difference]: Start difference. First operand 70 states and 101 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:42:23,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:23,050 INFO L93 Difference]: Finished difference Result 110 states and 159 transitions. [2022-11-18 18:42:23,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:42:23,051 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 57 [2022-11-18 18:42:23,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:23,053 INFO L225 Difference]: With dead ends: 110 [2022-11-18 18:42:23,053 INFO L226 Difference]: Without dead ends: 89 [2022-11-18 18:42:23,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:42:23,054 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 17 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:23,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 293 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:42:23,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-18 18:42:23,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 79. [2022-11-18 18:42:23,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 68 states have (on average 1.3970588235294117) internal successors, (95), 70 states have internal predecessors, (95), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-18 18:42:23,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 113 transitions. [2022-11-18 18:42:23,076 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 113 transitions. Word has length 57 [2022-11-18 18:42:23,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:23,077 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 113 transitions. [2022-11-18 18:42:23,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:42:23,077 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 113 transitions. [2022-11-18 18:42:23,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-18 18:42:23,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:23,079 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:23,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:23,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:23,288 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:23,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:23,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1704817494, now seen corresponding path program 1 times [2022-11-18 18:42:23,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:42:23,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306064562] [2022-11-18 18:42:23,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:23,289 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:23,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:42:23,290 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:42:23,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-18 18:42:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:23,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:42:23,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:23,987 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 18:42:23,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:42:25,421 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 18:42:25,421 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:42:25,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306064562] [2022-11-18 18:42:25,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306064562] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:42:25,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:42:25,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-18 18:42:25,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587313934] [2022-11-18 18:42:25,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:42:25,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 18:42:25,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:42:25,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:42:25,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:42:25,424 INFO L87 Difference]: Start difference. First operand 79 states and 113 transitions. Second operand has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 18:42:28,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:28,988 INFO L93 Difference]: Finished difference Result 221 states and 318 transitions. [2022-11-18 18:42:28,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:42:28,989 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2022-11-18 18:42:28,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:28,991 INFO L225 Difference]: With dead ends: 221 [2022-11-18 18:42:28,992 INFO L226 Difference]: Without dead ends: 150 [2022-11-18 18:42:28,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=183, Invalid=323, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:42:28,994 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 178 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:28,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 505 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-18 18:42:28,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-18 18:42:29,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 93. [2022-11-18 18:42:29,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 82 states have (on average 1.4390243902439024) internal successors, (118), 84 states have internal predecessors, (118), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-18 18:42:29,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 136 transitions. [2022-11-18 18:42:29,018 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 136 transitions. Word has length 57 [2022-11-18 18:42:29,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:29,018 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 136 transitions. [2022-11-18 18:42:29,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 18:42:29,019 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 136 transitions. [2022-11-18 18:42:29,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-18 18:42:29,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:29,020 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:29,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:29,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:29,233 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:29,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:29,233 INFO L85 PathProgramCache]: Analyzing trace with hash -848364147, now seen corresponding path program 1 times [2022-11-18 18:42:29,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:42:29,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606326489] [2022-11-18 18:42:29,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:29,234 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:29,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:42:29,235 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:42:29,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-18 18:42:29,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:29,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:42:29,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 24 proven. 45 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 18:42:30,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:42:31,932 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 4 proven. 53 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 18:42:31,932 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:42:31,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606326489] [2022-11-18 18:42:31,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606326489] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:42:31,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:42:31,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-18 18:42:31,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671717899] [2022-11-18 18:42:31,933 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:42:31,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 18:42:31,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:42:31,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 18:42:31,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:42:31,935 INFO L87 Difference]: Start difference. First operand 93 states and 136 transitions. Second operand has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 18:42:37,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:37,061 INFO L93 Difference]: Finished difference Result 244 states and 356 transitions. [2022-11-18 18:42:37,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 18:42:37,063 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2022-11-18 18:42:37,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:37,064 INFO L225 Difference]: With dead ends: 244 [2022-11-18 18:42:37,065 INFO L226 Difference]: Without dead ends: 159 [2022-11-18 18:42:37,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=354, Invalid=638, Unknown=0, NotChecked=0, Total=992 [2022-11-18 18:42:37,067 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 322 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:37,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 786 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-18 18:42:37,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-11-18 18:42:37,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 103. [2022-11-18 18:42:37,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 92 states have (on average 1.4673913043478262) internal successors, (135), 94 states have internal predecessors, (135), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-18 18:42:37,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 153 transitions. [2022-11-18 18:42:37,092 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 153 transitions. Word has length 62 [2022-11-18 18:42:37,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:37,092 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 153 transitions. [2022-11-18 18:42:37,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 18:42:37,093 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 153 transitions. [2022-11-18 18:42:37,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-18 18:42:37,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:37,094 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:37,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:37,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:37,307 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:37,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:37,307 INFO L85 PathProgramCache]: Analyzing trace with hash -115561174, now seen corresponding path program 2 times [2022-11-18 18:42:37,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:42:37,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645610685] [2022-11-18 18:42:37,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:42:37,308 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:37,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:42:37,310 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:42:37,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-18 18:42:37,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:42:37,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:42:37,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:42:37,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:37,412 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-11-18 18:42:37,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:42:37,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:42:37,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645610685] [2022-11-18 18:42:37,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645610685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:37,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:37,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:42:37,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144120157] [2022-11-18 18:42:37,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:37,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:42:37,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:42:37,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:42:37,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:42:37,414 INFO L87 Difference]: Start difference. First operand 103 states and 153 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:42:37,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:37,450 INFO L93 Difference]: Finished difference Result 112 states and 163 transitions. [2022-11-18 18:42:37,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:42:37,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 75 [2022-11-18 18:42:37,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:37,453 INFO L225 Difference]: With dead ends: 112 [2022-11-18 18:42:37,453 INFO L226 Difference]: Without dead ends: 103 [2022-11-18 18:42:37,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:42:37,454 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:37,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:42:37,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-18 18:42:37,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-11-18 18:42:37,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 92 states have (on average 1.4565217391304348) internal successors, (134), 94 states have internal predecessors, (134), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-18 18:42:37,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 152 transitions. [2022-11-18 18:42:37,483 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 152 transitions. Word has length 75 [2022-11-18 18:42:37,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:37,484 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 152 transitions. [2022-11-18 18:42:37,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:42:37,485 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 152 transitions. [2022-11-18 18:42:37,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-18 18:42:37,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:37,486 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:37,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:37,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:37,700 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:37,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:37,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1364778096, now seen corresponding path program 1 times [2022-11-18 18:42:37,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:42:37,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950451932] [2022-11-18 18:42:37,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:37,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:37,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:42:37,703 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:42:37,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-18 18:42:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:37,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 18:42:37,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:39,407 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 24 proven. 155 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 18:42:39,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:42:43,183 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 4 proven. 163 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 18:42:43,183 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:42:43,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950451932] [2022-11-18 18:42:43,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950451932] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:42:43,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:42:43,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-11-18 18:42:43,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663283236] [2022-11-18 18:42:43,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:42:43,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 18:42:43,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:42:43,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 18:42:43,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-11-18 18:42:43,185 INFO L87 Difference]: Start difference. First operand 103 states and 152 transitions. Second operand has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 26 states have internal predecessors, (101), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 18:42:55,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:55,894 INFO L93 Difference]: Finished difference Result 347 states and 504 transitions. [2022-11-18 18:42:55,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 18:42:55,895 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 26 states have internal predecessors, (101), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 77 [2022-11-18 18:42:55,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:55,897 INFO L225 Difference]: With dead ends: 347 [2022-11-18 18:42:55,897 INFO L226 Difference]: Without dead ends: 252 [2022-11-18 18:42:55,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=729, Invalid=1433, Unknown=0, NotChecked=0, Total=2162 [2022-11-18 18:42:55,899 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 642 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:55,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 1561 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-18 18:42:55,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-11-18 18:42:55,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 129. [2022-11-18 18:42:55,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 118 states have (on average 1.5) internal successors, (177), 120 states have internal predecessors, (177), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-18 18:42:55,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 195 transitions. [2022-11-18 18:42:55,932 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 195 transitions. Word has length 77 [2022-11-18 18:42:55,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:55,933 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 195 transitions. [2022-11-18 18:42:55,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 26 states have internal predecessors, (101), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 18:42:55,933 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 195 transitions. [2022-11-18 18:42:55,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-18 18:42:55,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:55,935 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:55,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:56,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:56,147 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:56,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:56,148 INFO L85 PathProgramCache]: Analyzing trace with hash 875383315, now seen corresponding path program 1 times [2022-11-18 18:42:56,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:42:56,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217410227] [2022-11-18 18:42:56,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:56,148 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:42:56,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:42:56,149 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:42:56,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-18 18:42:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:56,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:42:56,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:58,420 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 273 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 18:42:58,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:43:03,229 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 4 proven. 281 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 18:43:03,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:43:03,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217410227] [2022-11-18 18:43:03,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217410227] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:43:03,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:43:03,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2022-11-18 18:43:03,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239155319] [2022-11-18 18:43:03,230 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:43:03,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 18:43:03,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:43:03,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 18:43:03,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 18:43:03,233 INFO L87 Difference]: Start difference. First operand 129 states and 195 transitions. Second operand has 34 states, 34 states have (on average 3.6176470588235294) internal successors, (123), 34 states have internal predecessors, (123), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 18:43:15,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:15,650 INFO L93 Difference]: Finished difference Result 348 states and 510 transitions. [2022-11-18 18:43:15,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 18:43:15,651 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.6176470588235294) internal successors, (123), 34 states have internal predecessors, (123), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 88 [2022-11-18 18:43:15,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:15,653 INFO L225 Difference]: With dead ends: 348 [2022-11-18 18:43:15,654 INFO L226 Difference]: Without dead ends: 227 [2022-11-18 18:43:15,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=991, Invalid=2315, Unknown=0, NotChecked=0, Total=3306 [2022-11-18 18:43:15,657 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 778 mSDsluCounter, 1582 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:15,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 1660 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-18 18:43:15,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-18 18:43:15,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 133. [2022-11-18 18:43:15,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 122 states have (on average 1.5081967213114753) internal successors, (184), 124 states have internal predecessors, (184), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-18 18:43:15,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 202 transitions. [2022-11-18 18:43:15,699 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 202 transitions. Word has length 88 [2022-11-18 18:43:15,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:15,699 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 202 transitions. [2022-11-18 18:43:15,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.6176470588235294) internal successors, (123), 34 states have internal predecessors, (123), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 18:43:15,700 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 202 transitions. [2022-11-18 18:43:15,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-18 18:43:15,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:15,703 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:15,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:15,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:15,917 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:15,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:15,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1663337104, now seen corresponding path program 2 times [2022-11-18 18:43:15,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:43:15,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [435028495] [2022-11-18 18:43:15,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:43:15,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:15,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:43:15,920 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:43:15,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-18 18:43:15,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:43:15,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:15,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:43:15,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:16,123 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2022-11-18 18:43:16,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:16,123 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:43:16,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [435028495] [2022-11-18 18:43:16,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [435028495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:16,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:16,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:43:16,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689126757] [2022-11-18 18:43:16,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:16,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:43:16,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:43:16,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:43:16,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:43:16,126 INFO L87 Difference]: Start difference. First operand 133 states and 202 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:43:16,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:16,357 INFO L93 Difference]: Finished difference Result 170 states and 252 transitions. [2022-11-18 18:43:16,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:43:16,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 113 [2022-11-18 18:43:16,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:16,360 INFO L225 Difference]: With dead ends: 170 [2022-11-18 18:43:16,360 INFO L226 Difference]: Without dead ends: 160 [2022-11-18 18:43:16,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:43:16,362 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 44 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:16,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 202 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:43:16,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-18 18:43:16,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 138. [2022-11-18 18:43:16,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 127 states have (on average 1.4960629921259843) internal successors, (190), 129 states have internal predecessors, (190), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-18 18:43:16,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 208 transitions. [2022-11-18 18:43:16,393 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 208 transitions. Word has length 113 [2022-11-18 18:43:16,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:16,394 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 208 transitions. [2022-11-18 18:43:16,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:43:16,394 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 208 transitions. [2022-11-18 18:43:16,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-18 18:43:16,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:16,396 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:16,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:16,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:16,609 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:16,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:16,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1822283566, now seen corresponding path program 1 times [2022-11-18 18:43:16,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:43:16,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515363918] [2022-11-18 18:43:16,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:16,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:43:16,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:43:16,612 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:43:16,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-18 18:43:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:16,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 18:43:16,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:21,811 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 24 proven. 737 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 18:43:21,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:43:33,618 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 4 proven. 745 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 18:43:33,618 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:43:33,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515363918] [2022-11-18 18:43:33,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1515363918] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:43:33,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:43:33,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-11-18 18:43:33,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127259882] [2022-11-18 18:43:33,619 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:43:33,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-18 18:43:33,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:43:33,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-18 18:43:33,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2022-11-18 18:43:33,622 INFO L87 Difference]: Start difference. First operand 138 states and 208 transitions. Second operand has 50 states, 50 states have (on average 3.46) internal successors, (173), 50 states have internal predecessors, (173), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 18:44:28,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:28,014 INFO L93 Difference]: Finished difference Result 591 states and 868 transitions. [2022-11-18 18:44:28,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-11-18 18:44:28,016 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.46) internal successors, (173), 50 states have internal predecessors, (173), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 113 [2022-11-18 18:44:28,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:28,019 INFO L225 Difference]: With dead ends: 591 [2022-11-18 18:44:28,019 INFO L226 Difference]: Without dead ends: 461 [2022-11-18 18:44:28,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1452 ImplicationChecksByTransitivity, 39.4s TimeCoverageRelationStatistics Valid=2901, Invalid=6029, Unknown=0, NotChecked=0, Total=8930 [2022-11-18 18:44:28,023 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 2260 mSDsluCounter, 4808 mSDsCounter, 0 mSdLazyCounter, 4147 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2260 SdHoareTripleChecker+Valid, 5017 SdHoareTripleChecker+Invalid, 4492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 4147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.8s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:28,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2260 Valid, 5017 Invalid, 4492 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [345 Valid, 4147 Invalid, 0 Unknown, 0 Unchecked, 27.8s Time] [2022-11-18 18:44:28,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-11-18 18:44:28,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 206. [2022-11-18 18:44:28,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 195 states have (on average 1.5538461538461539) internal successors, (303), 197 states have internal predecessors, (303), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-18 18:44:28,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 321 transitions. [2022-11-18 18:44:28,074 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 321 transitions. Word has length 113 [2022-11-18 18:44:28,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:28,075 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 321 transitions. [2022-11-18 18:44:28,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.46) internal successors, (173), 50 states have internal predecessors, (173), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 18:44:28,075 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 321 transitions. [2022-11-18 18:44:28,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-18 18:44:28,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:28,077 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:28,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:28,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:28,291 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:44:28,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:28,291 INFO L85 PathProgramCache]: Analyzing trace with hash 239945809, now seen corresponding path program 1 times [2022-11-18 18:44:28,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:44:28,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839572444] [2022-11-18 18:44:28,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:28,292 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:44:28,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:44:28,293 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:44:28,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-18 18:44:28,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:28,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-18 18:44:28,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:39,513 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 10 proven. 836 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 18:44:39,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:45:02,432 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 10 proven. 836 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 18:45:02,432 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:45:02,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839572444] [2022-11-18 18:45:02,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839572444] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:45:02,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:45:02,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 66 [2022-11-18 18:45:02,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797038377] [2022-11-18 18:45:02,433 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:45:02,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-18 18:45:02,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:45:02,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-18 18:45:02,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=766, Invalid=3524, Unknown=0, NotChecked=0, Total=4290 [2022-11-18 18:45:02,436 INFO L87 Difference]: Start difference. First operand 206 states and 321 transitions. Second operand has 66 states, 66 states have (on average 2.878787878787879) internal successors, (190), 62 states have internal predecessors, (190), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 18:49:18,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:49:18,480 INFO L93 Difference]: Finished difference Result 570 states and 1123 transitions. [2022-11-18 18:49:18,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2022-11-18 18:49:18,483 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.878787878787879) internal successors, (190), 62 states have internal predecessors, (190), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 3 states have call successors, (7) Word has length 118 [2022-11-18 18:49:18,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:49:18,488 INFO L225 Difference]: With dead ends: 570 [2022-11-18 18:49:18,488 INFO L226 Difference]: Without dead ends: 547 [2022-11-18 18:49:18,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18854 ImplicationChecksByTransitivity, 200.7s TimeCoverageRelationStatistics Valid=11300, Invalid=45582, Unknown=0, NotChecked=0, Total=56882 [2022-11-18 18:49:18,505 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 3332 mSDsluCounter, 3484 mSDsCounter, 0 mSdLazyCounter, 11832 mSolverCounterSat, 689 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3340 SdHoareTripleChecker+Valid, 3585 SdHoareTripleChecker+Invalid, 12521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 689 IncrementalHoareTripleChecker+Valid, 11832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:49:18,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3340 Valid, 3585 Invalid, 12521 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [689 Valid, 11832 Invalid, 0 Unknown, 0 Unchecked, 80.2s Time] [2022-11-18 18:49:18,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-11-18 18:49:18,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 224. [2022-11-18 18:49:18,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 210 states have (on average 1.5476190476190477) internal successors, (325), 213 states have internal predecessors, (325), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (25), 7 states have call predecessors, (25), 6 states have call successors, (25) [2022-11-18 18:49:18,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 357 transitions. [2022-11-18 18:49:18,659 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 357 transitions. Word has length 118 [2022-11-18 18:49:18,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:49:18,660 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 357 transitions. [2022-11-18 18:49:18,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.878787878787879) internal successors, (190), 62 states have internal predecessors, (190), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 18:49:18,660 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 357 transitions. [2022-11-18 18:49:18,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-18 18:49:18,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:49:18,662 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:18,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:18,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:49:18,877 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:49:18,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:18,877 INFO L85 PathProgramCache]: Analyzing trace with hash 729167484, now seen corresponding path program 1 times [2022-11-18 18:49:18,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:49:18,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634051343] [2022-11-18 18:49:18,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:18,878 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:49:18,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:49:18,879 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:49:18,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-18 18:49:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:18,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:49:18,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:19,062 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2022-11-18 18:49:19,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:49:19,062 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:49:19,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634051343] [2022-11-18 18:49:19,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634051343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:19,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:19,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:49:19,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147473974] [2022-11-18 18:49:19,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:19,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:49:19,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:49:19,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:49:19,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:49:19,065 INFO L87 Difference]: Start difference. First operand 224 states and 357 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:49:19,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:49:19,229 INFO L93 Difference]: Finished difference Result 234 states and 368 transitions. [2022-11-18 18:49:19,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:49:19,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 122 [2022-11-18 18:49:19,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:49:19,232 INFO L225 Difference]: With dead ends: 234 [2022-11-18 18:49:19,232 INFO L226 Difference]: Without dead ends: 224 [2022-11-18 18:49:19,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:49:19,234 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 1 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:49:19,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 185 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:49:19,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-18 18:49:19,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 219. [2022-11-18 18:49:19,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 205 states have (on average 1.551219512195122) internal successors, (318), 208 states have internal predecessors, (318), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (25), 7 states have call predecessors, (25), 6 states have call successors, (25) [2022-11-18 18:49:19,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 350 transitions. [2022-11-18 18:49:19,322 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 350 transitions. Word has length 122 [2022-11-18 18:49:19,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:49:19,322 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 350 transitions. [2022-11-18 18:49:19,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:49:19,323 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 350 transitions. [2022-11-18 18:49:19,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-18 18:49:19,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:49:19,325 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:19,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:19,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:49:19,539 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:49:19,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:19,540 INFO L85 PathProgramCache]: Analyzing trace with hash -80179142, now seen corresponding path program 1 times [2022-11-18 18:49:19,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:49:19,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [816489712] [2022-11-18 18:49:19,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:19,541 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:49:19,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:49:19,542 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:49:19,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-18 18:49:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:19,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:49:19,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:20,128 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-11-18 18:49:20,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:49:20,524 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-11-18 18:49:20,524 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:49:20,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [816489712] [2022-11-18 18:49:20,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [816489712] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:49:20,525 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:49:20,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2022-11-18 18:49:20,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875647839] [2022-11-18 18:49:20,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:49:20,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:49:20,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:49:20,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:49:20,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:49:20,527 INFO L87 Difference]: Start difference. First operand 219 states and 350 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:49:20,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:49:20,974 INFO L93 Difference]: Finished difference Result 250 states and 398 transitions. [2022-11-18 18:49:20,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:49:20,975 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 122 [2022-11-18 18:49:20,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:49:20,982 INFO L225 Difference]: With dead ends: 250 [2022-11-18 18:49:20,982 INFO L226 Difference]: Without dead ends: 245 [2022-11-18 18:49:20,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:49:20,984 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 19 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:49:20,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 281 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:49:20,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-11-18 18:49:21,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 242. [2022-11-18 18:49:21,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 226 states have (on average 1.5309734513274336) internal successors, (346), 227 states have internal predecessors, (346), 9 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (34), 11 states have call predecessors, (34), 8 states have call successors, (34) [2022-11-18 18:49:21,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 389 transitions. [2022-11-18 18:49:21,092 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 389 transitions. Word has length 122 [2022-11-18 18:49:21,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:49:21,092 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 389 transitions. [2022-11-18 18:49:21,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:49:21,093 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 389 transitions. [2022-11-18 18:49:21,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 18:49:21,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:49:21,094 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:21,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:21,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:49:21,309 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:49:21,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:21,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1019638336, now seen corresponding path program 1 times [2022-11-18 18:49:21,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:49:21,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895772103] [2022-11-18 18:49:21,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:21,310 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:49:21,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:49:21,310 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:49:21,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-18 18:49:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:21,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:49:21,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:21,598 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2022-11-18 18:49:21,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:49:21,598 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:49:21,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895772103] [2022-11-18 18:49:21,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895772103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:21,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:21,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:49:21,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252192450] [2022-11-18 18:49:21,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:21,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:49:21,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:49:21,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:49:21,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:49:21,601 INFO L87 Difference]: Start difference. First operand 242 states and 389 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:49:21,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:49:21,905 INFO L93 Difference]: Finished difference Result 265 states and 413 transitions. [2022-11-18 18:49:21,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:49:21,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 124 [2022-11-18 18:49:21,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:49:21,908 INFO L225 Difference]: With dead ends: 265 [2022-11-18 18:49:21,908 INFO L226 Difference]: Without dead ends: 259 [2022-11-18 18:49:21,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:49:21,909 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 22 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:49:21,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 229 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:49:21,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-11-18 18:49:21,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 257. [2022-11-18 18:49:21,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 241 states have (on average 1.5020746887966805) internal successors, (362), 242 states have internal predecessors, (362), 9 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (34), 11 states have call predecessors, (34), 8 states have call successors, (34) [2022-11-18 18:49:22,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 405 transitions. [2022-11-18 18:49:22,002 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 405 transitions. Word has length 124 [2022-11-18 18:49:22,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:49:22,002 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 405 transitions. [2022-11-18 18:49:22,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:49:22,003 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 405 transitions. [2022-11-18 18:49:22,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 18:49:22,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:49:22,004 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:22,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:22,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:49:22,217 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:49:22,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:22,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1076896638, now seen corresponding path program 1 times [2022-11-18 18:49:22,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:49:22,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697757869] [2022-11-18 18:49:22,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:22,219 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:49:22,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:49:22,220 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:49:22,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-18 18:49:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:22,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:49:22,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:22,573 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2022-11-18 18:49:22,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:49:22,573 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:49:22,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697757869] [2022-11-18 18:49:22,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697757869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:22,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:22,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:49:22,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375804720] [2022-11-18 18:49:22,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:22,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:49:22,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:49:22,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:49:22,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:49:22,576 INFO L87 Difference]: Start difference. First operand 257 states and 405 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:49:22,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:49:22,951 INFO L93 Difference]: Finished difference Result 263 states and 410 transitions. [2022-11-18 18:49:22,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:49:22,952 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 124 [2022-11-18 18:49:22,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:49:22,955 INFO L225 Difference]: With dead ends: 263 [2022-11-18 18:49:22,955 INFO L226 Difference]: Without dead ends: 246 [2022-11-18 18:49:22,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:49:22,956 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 2 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:49:22,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 295 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:49:22,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-18 18:49:23,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 244. [2022-11-18 18:49:23,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 229 states have (on average 1.5109170305676856) internal successors, (346), 231 states have internal predecessors, (346), 8 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (28), 9 states have call predecessors, (28), 7 states have call successors, (28) [2022-11-18 18:49:23,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 382 transitions. [2022-11-18 18:49:23,049 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 382 transitions. Word has length 124 [2022-11-18 18:49:23,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:49:23,049 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 382 transitions. [2022-11-18 18:49:23,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:49:23,050 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 382 transitions. [2022-11-18 18:49:23,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-18 18:49:23,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:49:23,051 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:23,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:23,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:49:23,264 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:49:23,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:23,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1258657602, now seen corresponding path program 1 times [2022-11-18 18:49:23,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:49:23,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622472170] [2022-11-18 18:49:23,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:23,265 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:49:23,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:49:23,266 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:49:23,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-18 18:49:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:23,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:49:23,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:23,757 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-11-18 18:49:23,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:49:24,044 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-11-18 18:49:24,044 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:49:24,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622472170] [2022-11-18 18:49:24,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622472170] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:49:24,045 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:49:24,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2022-11-18 18:49:24,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739017804] [2022-11-18 18:49:24,046 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:49:24,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:49:24,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:49:24,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:49:24,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:49:24,047 INFO L87 Difference]: Start difference. First operand 244 states and 382 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:49:24,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:49:24,691 INFO L93 Difference]: Finished difference Result 260 states and 397 transitions. [2022-11-18 18:49:24,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:49:24,692 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 125 [2022-11-18 18:49:24,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:49:24,695 INFO L225 Difference]: With dead ends: 260 [2022-11-18 18:49:24,695 INFO L226 Difference]: Without dead ends: 234 [2022-11-18 18:49:24,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:49:24,697 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 13 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:49:24,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 397 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:49:24,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-11-18 18:49:24,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 226. [2022-11-18 18:49:24,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 212 states have (on average 1.528301886792453) internal successors, (324), 215 states have internal predecessors, (324), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-18 18:49:24,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 350 transitions. [2022-11-18 18:49:24,773 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 350 transitions. Word has length 125 [2022-11-18 18:49:24,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:49:24,773 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 350 transitions. [2022-11-18 18:49:24,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:49:24,774 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 350 transitions. [2022-11-18 18:49:24,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-18 18:49:24,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:49:24,775 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:24,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:24,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:49:24,991 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:49:24,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:24,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1209150703, now seen corresponding path program 2 times [2022-11-18 18:49:24,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:49:24,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367360867] [2022-11-18 18:49:24,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:49:24,992 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:49:24,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:49:24,994 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:49:25,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-18 18:49:25,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:49:25,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:49:25,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 18:49:25,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:25,273 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 866 trivial. 0 not checked. [2022-11-18 18:49:25,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:49:25,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:49:25,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367360867] [2022-11-18 18:49:25,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367360867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:25,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:25,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:49:25,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416416118] [2022-11-18 18:49:25,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:25,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:49:25,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:49:25,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:49:25,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:49:25,275 INFO L87 Difference]: Start difference. First operand 226 states and 350 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:49:25,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:49:25,627 INFO L93 Difference]: Finished difference Result 262 states and 392 transitions. [2022-11-18 18:49:25,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:49:25,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 126 [2022-11-18 18:49:25,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:49:25,630 INFO L225 Difference]: With dead ends: 262 [2022-11-18 18:49:25,630 INFO L226 Difference]: Without dead ends: 250 [2022-11-18 18:49:25,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:49:25,632 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 53 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:49:25,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 253 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:49:25,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-18 18:49:25,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 227. [2022-11-18 18:49:25,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 213 states have (on average 1.5258215962441315) internal successors, (325), 216 states have internal predecessors, (325), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-18 18:49:25,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 351 transitions. [2022-11-18 18:49:25,733 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 351 transitions. Word has length 126 [2022-11-18 18:49:25,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:49:25,734 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 351 transitions. [2022-11-18 18:49:25,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:49:25,734 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 351 transitions. [2022-11-18 18:49:25,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-18 18:49:25,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:49:25,736 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:25,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:25,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:49:25,947 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:49:25,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:25,947 INFO L85 PathProgramCache]: Analyzing trace with hash 622344689, now seen corresponding path program 1 times [2022-11-18 18:49:25,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:49:25,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521167319] [2022-11-18 18:49:25,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:25,948 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:49:25,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:49:25,949 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:49:25,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-18 18:49:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:26,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-18 18:49:26,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:36,603 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 4 proven. 840 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 18:49:36,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:49:57,623 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 4 proven. 840 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 18:49:57,623 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:49:57,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521167319] [2022-11-18 18:49:57,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521167319] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:49:57,623 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:49:57,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2022-11-18 18:49:57,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129603103] [2022-11-18 18:49:57,624 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:49:57,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-18 18:49:57,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:49:57,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-18 18:49:57,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=763, Invalid=3269, Unknown=0, NotChecked=0, Total=4032 [2022-11-18 18:49:57,627 INFO L87 Difference]: Start difference. First operand 227 states and 351 transitions. Second operand has 64 states, 64 states have (on average 3.0) internal successors, (192), 62 states have internal predecessors, (192), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 18:53:12,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:53:12,063 INFO L93 Difference]: Finished difference Result 602 states and 890 transitions. [2022-11-18 18:53:12,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-11-18 18:53:12,064 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.0) internal successors, (192), 62 states have internal predecessors, (192), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 126 [2022-11-18 18:53:12,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:53:12,068 INFO L225 Difference]: With dead ends: 602 [2022-11-18 18:53:12,068 INFO L226 Difference]: Without dead ends: 587 [2022-11-18 18:53:12,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10219 ImplicationChecksByTransitivity, 166.3s TimeCoverageRelationStatistics Valid=8299, Invalid=26483, Unknown=0, NotChecked=0, Total=34782 [2022-11-18 18:53:12,075 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 3056 mSDsluCounter, 5110 mSDsCounter, 0 mSdLazyCounter, 7544 mSolverCounterSat, 639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3056 SdHoareTripleChecker+Valid, 5267 SdHoareTripleChecker+Invalid, 8183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 7544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:53:12,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3056 Valid, 5267 Invalid, 8183 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [639 Valid, 7544 Invalid, 0 Unknown, 0 Unchecked, 51.0s Time] [2022-11-18 18:53:12,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2022-11-18 18:53:12,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 229. [2022-11-18 18:53:12,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 215 states have (on average 1.5255813953488373) internal successors, (328), 217 states have internal predecessors, (328), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (19), 8 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-18 18:53:12,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 354 transitions. [2022-11-18 18:53:12,192 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 354 transitions. Word has length 126 [2022-11-18 18:53:12,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:53:12,193 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 354 transitions. [2022-11-18 18:53:12,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.0) internal successors, (192), 62 states have internal predecessors, (192), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 18:53:12,193 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 354 transitions. [2022-11-18 18:53:12,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-18 18:53:12,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:53:12,195 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:53:12,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-11-18 18:53:12,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:53:12,408 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:53:12,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:53:12,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1341851559, now seen corresponding path program 1 times [2022-11-18 18:53:12,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:53:12,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346703787] [2022-11-18 18:53:12,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:53:12,409 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:53:12,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:53:12,410 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:53:12,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-18 18:53:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:12,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:53:12,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:53:12,695 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 866 trivial. 0 not checked. [2022-11-18 18:53:12,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:53:12,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:53:12,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346703787] [2022-11-18 18:53:12,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346703787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:53:12,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:53:12,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:53:12,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248967179] [2022-11-18 18:53:12,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:53:12,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:53:12,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:53:12,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:53:12,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:53:12,697 INFO L87 Difference]: Start difference. First operand 229 states and 354 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:53:12,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:53:12,970 INFO L93 Difference]: Finished difference Result 244 states and 369 transitions. [2022-11-18 18:53:12,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:53:12,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 127 [2022-11-18 18:53:12,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:53:12,973 INFO L225 Difference]: With dead ends: 244 [2022-11-18 18:53:12,973 INFO L226 Difference]: Without dead ends: 239 [2022-11-18 18:53:12,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:53:12,975 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 20 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:53:12,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 238 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:53:12,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-18 18:53:13,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 236. [2022-11-18 18:53:13,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 222 states have (on average 1.509009009009009) internal successors, (335), 224 states have internal predecessors, (335), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (19), 8 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-18 18:53:13,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 361 transitions. [2022-11-18 18:53:13,060 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 361 transitions. Word has length 127 [2022-11-18 18:53:13,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:53:13,060 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 361 transitions. [2022-11-18 18:53:13,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:53:13,060 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 361 transitions. [2022-11-18 18:53:13,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-18 18:53:13,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:53:13,062 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:53:13,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-18 18:53:13,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:53:13,271 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:53:13,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:53:13,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1806024394, now seen corresponding path program 1 times [2022-11-18 18:53:13,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:53:13,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951280399] [2022-11-18 18:53:13,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:53:13,272 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:53:13,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:53:13,273 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:53:13,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-18 18:53:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:13,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-18 18:53:13,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:53:24,156 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 4 proven. 840 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 18:53:24,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:53:27,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:53:27,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951280399] [2022-11-18 18:53:27,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951280399] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:53:27,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1374665332] [2022-11-18 18:53:27,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:53:27,127 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 18:53:27,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 18:53:27,129 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 18:53:27,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa890b0a-b240-4014-a9da-9eeacc56b5b1/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-18 18:53:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:27,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-18 18:53:27,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:53:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 4 proven. 840 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 18:53:31,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:53:36,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1374665332] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:53:36,658 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:53:36,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 38 [2022-11-18 18:53:36,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756086755] [2022-11-18 18:53:36,658 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:53:36,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-18 18:53:36,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:53:36,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-18 18:53:36,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=2185, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 18:53:36,660 INFO L87 Difference]: Start difference. First operand 236 states and 361 transitions. Second operand has 38 states, 38 states have (on average 3.026315789473684) internal successors, (115), 37 states have internal predecessors, (115), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)