./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_6+soft_float_1-2a.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_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c0258cad6f5a3f697bac60a20b4b03c973cfd1bb1cab6bf28507067e377df9c4 --- 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 [2022-11-19 05:21:26,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 05:21:26,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 05:21:27,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 05:21:27,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 05:21:27,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 05:21:27,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 05:21:27,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 05:21:27,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 05:21:27,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 05:21:27,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 05:21:27,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 05:21:27,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 05:21:27,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 05:21:27,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 05:21:27,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 05:21:27,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 05:21:27,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 05:21:27,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 05:21:27,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 05:21:27,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 05:21:27,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 05:21:27,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 05:21:27,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 05:21:27,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 05:21:27,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 05:21:27,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 05:21:27,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 05:21:27,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 05:21:27,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 05:21:27,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 05:21:27,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 05:21:27,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 05:21:27,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 05:21:27,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 05:21:27,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 05:21:27,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 05:21:27,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 05:21:27,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 05:21:27,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 05:21:27,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 05:21:27,138 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 05:21:27,193 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 05:21:27,194 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 05:21:27,195 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 05:21:27,195 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 05:21:27,197 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 05:21:27,197 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 05:21:27,197 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 05:21:27,198 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 05:21:27,198 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 05:21:27,198 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 05:21:27,200 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 05:21:27,200 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 05:21:27,201 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 05:21:27,201 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 05:21:27,201 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 05:21:27,202 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 05:21:27,202 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 05:21:27,202 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 05:21:27,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 05:21:27,204 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 05:21:27,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 05:21:27,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 05:21:27,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 05:21:27,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 05:21:27,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 05:21:27,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 05:21:27,208 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 05:21:27,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 05:21:27,208 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 05:21:27,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 05:21:27,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 05:21:27,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 05:21:27,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 05:21:27,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 05:21:27,210 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 05:21:27,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 05:21:27,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 05:21:27,211 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 05:21:27,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 05:21:27,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 05:21:27,212 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 05:21:27,212 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_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0258cad6f5a3f697bac60a20b4b03c973cfd1bb1cab6bf28507067e377df9c4 [2022-11-19 05:21:27,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 05:21:27,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 05:21:27,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 05:21:27,656 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 05:21:27,657 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 05:21:27,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c [2022-11-19 05:21:27,749 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/data/d8764701a/08faaa54c0b14fea849078e98522acb5/FLAG47888834c [2022-11-19 05:21:28,536 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 05:21:28,537 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c [2022-11-19 05:21:28,559 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/data/d8764701a/08faaa54c0b14fea849078e98522acb5/FLAG47888834c [2022-11-19 05:21:28,782 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/data/d8764701a/08faaa54c0b14fea849078e98522acb5 [2022-11-19 05:21:28,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 05:21:28,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 05:21:28,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 05:21:28,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 05:21:28,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 05:21:28,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:28" (1/1) ... [2022-11-19 05:21:28,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16f829e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:28, skipping insertion in model container [2022-11-19 05:21:28,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:28" (1/1) ... [2022-11-19 05:21:28,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 05:21:28,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 05:21:29,142 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_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c[1997,2010] [2022-11-19 05:21:29,151 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_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c[2391,2404] [2022-11-19 05:21:29,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 05:21:29,283 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 05:21:29,321 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_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c[1997,2010] [2022-11-19 05:21:29,326 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_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c[2391,2404] [2022-11-19 05:21:29,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 05:21:29,442 INFO L208 MainTranslator]: Completed translation [2022-11-19 05:21:29,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:29 WrapperNode [2022-11-19 05:21:29,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 05:21:29,445 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 05:21:29,445 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 05:21:29,445 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 05:21:29,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:29" (1/1) ... [2022-11-19 05:21:29,487 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:29" (1/1) ... [2022-11-19 05:21:29,542 INFO L138 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 211 [2022-11-19 05:21:29,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 05:21:29,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 05:21:29,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 05:21:29,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 05:21:29,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:29" (1/1) ... [2022-11-19 05:21:29,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:29" (1/1) ... [2022-11-19 05:21:29,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:29" (1/1) ... [2022-11-19 05:21:29,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:29" (1/1) ... [2022-11-19 05:21:29,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:29" (1/1) ... [2022-11-19 05:21:29,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:29" (1/1) ... [2022-11-19 05:21:29,627 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:29" (1/1) ... [2022-11-19 05:21:29,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:29" (1/1) ... [2022-11-19 05:21:29,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 05:21:29,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 05:21:29,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 05:21:29,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 05:21:29,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:29" (1/1) ... [2022-11-19 05:21:29,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 05:21:29,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 05:21:29,702 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 05:21:29,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 05:21:29,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 05:21:29,777 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-19 05:21:29,777 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-19 05:21:29,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 05:21:29,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 05:21:29,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 05:21:29,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 05:21:29,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 05:21:29,940 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 05:21:29,947 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 05:21:30,727 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 05:21:31,134 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 05:21:31,134 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 05:21:31,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:31 BoogieIcfgContainer [2022-11-19 05:21:31,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 05:21:31,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 05:21:31,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 05:21:31,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 05:21:31,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:21:28" (1/3) ... [2022-11-19 05:21:31,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b1bda6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:21:31, skipping insertion in model container [2022-11-19 05:21:31,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:29" (2/3) ... [2022-11-19 05:21:31,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b1bda6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:21:31, skipping insertion in model container [2022-11-19 05:21:31,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:31" (3/3) ... [2022-11-19 05:21:31,150 INFO L112 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_1-2a.c.cil.c [2022-11-19 05:21:31,182 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 05:21:31,182 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 05:21:31,295 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 05:21:31,313 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=FINITE_AUTOMATA, 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;@a6bfc59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 05:21:31,313 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 05:21:31,320 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 42 states have internal predecessors, (59), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 05:21:31,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 05:21:31,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:21:31,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 05:21:31,334 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:21:31,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:21:31,346 INFO L85 PathProgramCache]: Analyzing trace with hash 12644195, now seen corresponding path program 1 times [2022-11-19 05:21:31,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 05:21:31,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081970501] [2022-11-19 05:21:31,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:21:31,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 05:21:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 05:21:31,502 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 05:21:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 05:21:31,555 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 05:21:31,558 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 05:21:31,560 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-19 05:21:31,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-19 05:21:31,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 05:21:31,571 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 05:21:31,577 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 05:21:31,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:21:31 BoogieIcfgContainer [2022-11-19 05:21:31,612 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 05:21:31,615 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 05:21:31,615 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 05:21:31,616 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 05:21:31,616 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:31" (3/4) ... [2022-11-19 05:21:31,621 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 05:21:31,621 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 05:21:31,623 INFO L158 Benchmark]: Toolchain (without parser) took 2831.56ms. Allocated memory is still 123.7MB. Free memory was 85.0MB in the beginning and 80.6MB in the end (delta: 4.4MB). Peak memory consumption was 1.1MB. Max. memory is 16.1GB. [2022-11-19 05:21:31,624 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 123.7MB. Free memory is still 102.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 05:21:31,626 INFO L158 Benchmark]: CACSL2BoogieTranslator took 649.98ms. Allocated memory is still 123.7MB. Free memory was 84.9MB in the beginning and 93.4MB in the end (delta: -8.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 05:21:31,627 INFO L158 Benchmark]: Boogie Procedure Inliner took 105.24ms. Allocated memory is still 123.7MB. Free memory was 93.4MB in the beginning and 90.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 05:21:31,629 INFO L158 Benchmark]: Boogie Preprocessor took 82.59ms. Allocated memory is still 123.7MB. Free memory was 90.9MB in the beginning and 89.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 05:21:31,637 INFO L158 Benchmark]: RCFGBuilder took 1503.30ms. Allocated memory is still 123.7MB. Free memory was 89.4MB in the beginning and 95.3MB in the end (delta: -5.9MB). Peak memory consumption was 49.7MB. Max. memory is 16.1GB. [2022-11-19 05:21:31,638 INFO L158 Benchmark]: TraceAbstraction took 471.70ms. Allocated memory is still 123.7MB. Free memory was 94.8MB in the beginning and 80.6MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 05:21:31,639 INFO L158 Benchmark]: Witness Printer took 6.54ms. Allocated memory is still 123.7MB. Free memory was 80.6MB in the beginning and 80.6MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 05:21:31,650 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 123.7MB. Free memory is still 102.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 649.98ms. Allocated memory is still 123.7MB. Free memory was 84.9MB in the beginning and 93.4MB in the end (delta: -8.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 105.24ms. Allocated memory is still 123.7MB. Free memory was 93.4MB in the beginning and 90.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 82.59ms. Allocated memory is still 123.7MB. Free memory was 90.9MB in the beginning and 89.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1503.30ms. Allocated memory is still 123.7MB. Free memory was 89.4MB in the beginning and 95.3MB in the end (delta: -5.9MB). Peak memory consumption was 49.7MB. Max. memory is 16.1GB. * TraceAbstraction took 471.70ms. Allocated memory is still 123.7MB. Free memory was 94.8MB in the beginning and 80.6MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 6.54ms. Allocated memory is still 123.7MB. Free memory was 80.6MB in the beginning and 80.6MB in the end (delta: 2.6kB). 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: [L403] COND TRUE __VERIFIER_nondet_int() [L404] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [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 < 1.399f) VAL [IN=53, x=53] [L48] reach_error() VAL [IN=53, x=53] - UnprovableResult [Line: 61]: 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, 51 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2022-11-19 05:21:31,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c0258cad6f5a3f697bac60a20b4b03c973cfd1bb1cab6bf28507067e377df9c4 --- 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 [2022-11-19 05:21:34,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 05:21:34,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 05:21:34,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 05:21:34,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 05:21:34,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 05:21:34,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 05:21:34,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 05:21:34,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 05:21:34,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 05:21:34,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 05:21:34,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 05:21:34,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 05:21:34,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 05:21:34,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 05:21:34,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 05:21:34,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 05:21:34,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 05:21:34,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 05:21:34,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 05:21:34,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 05:21:34,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 05:21:34,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 05:21:34,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 05:21:34,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 05:21:34,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 05:21:34,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 05:21:34,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 05:21:34,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 05:21:34,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 05:21:34,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 05:21:34,748 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 05:21:34,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 05:21:34,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 05:21:34,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 05:21:34,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 05:21:34,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 05:21:34,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 05:21:34,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 05:21:34,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 05:21:34,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 05:21:34,760 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-19 05:21:34,823 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 05:21:34,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 05:21:34,825 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 05:21:34,825 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 05:21:34,826 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 05:21:34,827 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 05:21:34,827 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 05:21:34,828 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 05:21:34,828 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 05:21:34,829 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 05:21:34,829 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 05:21:34,830 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 05:21:34,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 05:21:34,838 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 05:21:34,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 05:21:34,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 05:21:34,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 05:21:34,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 05:21:34,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 05:21:34,840 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 05:21:34,844 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 05:21:34,844 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 05:21:34,844 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 05:21:34,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 05:21:34,846 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 05:21:34,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 05:21:34,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 05:21:34,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 05:21:34,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 05:21:34,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 05:21:34,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 05:21:34,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 05:21:34,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 05:21:34,851 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 05:21:34,851 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 05:21:34,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 05:21:34,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 05:21:34,854 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 05:21:34,854 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_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0258cad6f5a3f697bac60a20b4b03c973cfd1bb1cab6bf28507067e377df9c4 [2022-11-19 05:21:35,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 05:21:35,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 05:21:35,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 05:21:35,499 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 05:21:35,500 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 05:21:35,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c [2022-11-19 05:21:35,602 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/data/7a7baff79/3966016ef789416db054ae706c3272ef/FLAG8095cbc38 [2022-11-19 05:21:36,364 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 05:21:36,365 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c [2022-11-19 05:21:36,377 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/data/7a7baff79/3966016ef789416db054ae706c3272ef/FLAG8095cbc38 [2022-11-19 05:21:36,683 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/data/7a7baff79/3966016ef789416db054ae706c3272ef [2022-11-19 05:21:36,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 05:21:36,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 05:21:36,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 05:21:36,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 05:21:36,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 05:21:36,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:36" (1/1) ... [2022-11-19 05:21:36,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ca322cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:36, skipping insertion in model container [2022-11-19 05:21:36,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:36" (1/1) ... [2022-11-19 05:21:36,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 05:21:36,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 05:21:37,102 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_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c[1997,2010] [2022-11-19 05:21:37,115 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_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c[2391,2404] [2022-11-19 05:21:37,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 05:21:37,361 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 05:21:37,381 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_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c[1997,2010] [2022-11-19 05:21:37,384 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_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c[2391,2404] [2022-11-19 05:21:37,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 05:21:37,461 INFO L208 MainTranslator]: Completed translation [2022-11-19 05:21:37,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:37 WrapperNode [2022-11-19 05:21:37,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 05:21:37,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 05:21:37,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 05:21:37,464 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 05:21:37,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:37" (1/1) ... [2022-11-19 05:21:37,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:37" (1/1) ... [2022-11-19 05:21:37,531 INFO L138 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 165 [2022-11-19 05:21:37,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 05:21:37,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 05:21:37,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 05:21:37,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 05:21:37,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:37" (1/1) ... [2022-11-19 05:21:37,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:37" (1/1) ... [2022-11-19 05:21:37,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:37" (1/1) ... [2022-11-19 05:21:37,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:37" (1/1) ... [2022-11-19 05:21:37,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:37" (1/1) ... [2022-11-19 05:21:37,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:37" (1/1) ... [2022-11-19 05:21:37,580 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:37" (1/1) ... [2022-11-19 05:21:37,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:37" (1/1) ... [2022-11-19 05:21:37,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 05:21:37,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 05:21:37,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 05:21:37,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 05:21:37,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:37" (1/1) ... [2022-11-19 05:21:37,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 05:21:37,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 05:21:37,643 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 05:21:37,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 05:21:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 05:21:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 05:21:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-19 05:21:37,718 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-19 05:21:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 05:21:37,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 05:21:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 05:21:37,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 05:21:37,893 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 05:21:37,896 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 05:21:40,771 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 05:21:40,787 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 05:21:40,787 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 05:21:40,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:40 BoogieIcfgContainer [2022-11-19 05:21:40,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 05:21:40,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 05:21:40,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 05:21:40,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 05:21:40,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:21:36" (1/3) ... [2022-11-19 05:21:40,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5905c544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:21:40, skipping insertion in model container [2022-11-19 05:21:40,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:37" (2/3) ... [2022-11-19 05:21:40,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5905c544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:21:40, skipping insertion in model container [2022-11-19 05:21:40,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:40" (3/3) ... [2022-11-19 05:21:40,809 INFO L112 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_1-2a.c.cil.c [2022-11-19 05:21:40,838 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 05:21:40,839 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 05:21:40,913 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 05:21:40,921 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=FINITE_AUTOMATA, 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;@736f4945, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 05:21:40,922 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 05:21:40,928 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 05:21:40,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 05:21:40,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:21:40,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 05:21:40,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:21:40,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:21:40,948 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-11-19 05:21:40,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 05:21:40,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795691943] [2022-11-19 05:21:40,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:21:40,967 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 [2022-11-19 05:21:40,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 05:21:40,969 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 05:21:40,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:21:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:21:41,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 05:21:41,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:21:41,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 05:21:41,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 05:21:41,764 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 05:21:41,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795691943] [2022-11-19 05:21:41,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795691943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:21:41,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 05:21:41,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 05:21:41,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523307633] [2022-11-19 05:21:41,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:21:41,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 05:21:41,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 05:21:41,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 05:21:41,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 05:21:41,832 INFO L87 Difference]: Start difference. First operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) 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) [2022-11-19 05:21:41,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:21:41,883 INFO L93 Difference]: Finished difference Result 157 states and 248 transitions. [2022-11-19 05:21:41,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 05:21:41,886 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 [2022-11-19 05:21:41,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:21:41,900 INFO L225 Difference]: With dead ends: 157 [2022-11-19 05:21:41,901 INFO L226 Difference]: Without dead ends: 74 [2022-11-19 05:21:41,907 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 [2022-11-19 05:21:41,913 INFO L413 NwaCegarLoop]: 116 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, 116 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 [2022-11-19 05:21:41,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 05:21:41,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-19 05:21:41,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-11-19 05:21:41,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 65 states have internal predecessors, (92), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-19 05:21:41,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 107 transitions. [2022-11-19 05:21:41,975 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 107 transitions. Word has length 7 [2022-11-19 05:21:41,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:21:41,976 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 107 transitions. [2022-11-19 05:21:41,977 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) [2022-11-19 05:21:41,977 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 107 transitions. [2022-11-19 05:21:41,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 05:21:41,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:21:41,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 05:21:42,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:21:42,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:21:42,184 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:21:42,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:21:42,186 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-11-19 05:21:42,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 05:21:42,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391218521] [2022-11-19 05:21:42,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:21:42,188 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 [2022-11-19 05:21:42,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 05:21:42,190 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 05:21:42,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:35:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:35:33,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 05:35:33,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:35:48,475 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 [2022-11-19 05:36:22,405 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 (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))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (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 (/ 1399.0 1000.0)))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from false [2022-11-19 05:36:24,454 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 (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))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (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 (/ 1399.0 1000.0)))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from true [2022-11-19 05:36:24,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 05:36:24,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 05:36:24,455 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 05:36:24,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1391218521] [2022-11-19 05:36:24,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1391218521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:36:24,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 05:36:24,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 05:36:24,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403126068] [2022-11-19 05:36:24,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:36:24,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 05:36:24,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 05:36:24,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 05:36:24,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2022-11-19 05:36:24,462 INFO L87 Difference]: Start difference. First operand 74 states and 107 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) [2022-11-19 05:36:27,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 05:36:27,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:36:27,402 INFO L93 Difference]: Finished difference Result 74 states and 107 transitions. [2022-11-19 05:36:27,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 05:36:27,403 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 [2022-11-19 05:36:27,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:36:27,405 INFO L225 Difference]: With dead ends: 74 [2022-11-19 05:36:27,405 INFO L226 Difference]: Without dead ends: 69 [2022-11-19 05:36:27,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=18, Invalid=17, Unknown=3, NotChecked=18, Total=56 [2022-11-19 05:36:27,407 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 103 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 209 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-19 05:36:27,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 274 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 1 Unknown, 209 Unchecked, 2.7s Time] [2022-11-19 05:36:27,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-19 05:36:27,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-11-19 05:36:27,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 58 states have (on average 1.5) internal successors, (87), 60 states have internal predecessors, (87), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-19 05:36:27,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 102 transitions. [2022-11-19 05:36:27,418 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 102 transitions. Word has length 7 [2022-11-19 05:36:27,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:36:27,419 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 102 transitions. [2022-11-19 05:36:27,419 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) [2022-11-19 05:36:27,419 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 102 transitions. [2022-11-19 05:36:27,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-19 05:36:27,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:36:27,421 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 05:36:27,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:27,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:27,644 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:36:27,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:36:27,645 INFO L85 PathProgramCache]: Analyzing trace with hash -567365317, now seen corresponding path program 1 times [2022-11-19 05:36:27,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 05:36:27,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943001001] [2022-11-19 05:36:27,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:36:27,646 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 [2022-11-19 05:36:27,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 05:36:27,647 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 05:36:27,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:36:27,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 05:36:27,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:36:28,122 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 05:36:28,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 05:36:28,508 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 05:36:28,508 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 05:36:28,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943001001] [2022-11-19 05:36:28,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943001001] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 05:36:28,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1219009207] [2022-11-19 05:36:28,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:36:28,509 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 05:36:28,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 05:36:28,517 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 05:36:28,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2022-11-19 05:36:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:36:28,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 05:36:28,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:36:29,194 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 05:36:29,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 05:36:29,544 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 05:36:29,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1219009207] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 05:36:29,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805441190] [2022-11-19 05:36:29,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:36:29,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 05:36:29,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 05:36:29,548 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 05:36:29,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 05:36:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:36:29,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 05:36:29,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:36:29,798 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 05:36:29,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 05:36:30,164 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 05:36:30,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805441190] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 05:36:30,165 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 05:36:30,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8, 8, 8, 8] total 10 [2022-11-19 05:36:30,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8290576] [2022-11-19 05:36:30,166 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 05:36:30,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-19 05:36:30,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 05:36:30,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-19 05:36:30,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-19 05:36:30,176 INFO L87 Difference]: Start difference. First operand 69 states and 102 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-19 05:36:33,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:36:33,826 INFO L93 Difference]: Finished difference Result 325 states and 520 transitions. [2022-11-19 05:36:33,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-19 05:36:33,828 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 33 [2022-11-19 05:36:33,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:36:33,832 INFO L225 Difference]: With dead ends: 325 [2022-11-19 05:36:33,832 INFO L226 Difference]: Without dead ends: 280 [2022-11-19 05:36:33,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-11-19 05:36:33,834 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 272 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-19 05:36:33,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 1588 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-19 05:36:33,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-11-19 05:36:33,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 113. [2022-11-19 05:36:33,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 95 states have (on average 1.4210526315789473) internal successors, (135), 96 states have internal predecessors, (135), 14 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (20), 16 states have call predecessors, (20), 13 states have call successors, (20) [2022-11-19 05:36:33,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 169 transitions. [2022-11-19 05:36:33,862 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 169 transitions. Word has length 33 [2022-11-19 05:36:33,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:36:33,863 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 169 transitions. [2022-11-19 05:36:33,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-19 05:36:33,863 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 169 transitions. [2022-11-19 05:36:33,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-19 05:36:33,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:36:33,866 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-19 05:36:33,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-19 05:36:34,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2022-11-19 05:36:34,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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)] Forceful destruction successful, exit code 0 [2022-11-19 05:36:34,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:34,472 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:36:34,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:36:34,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1860757616, now seen corresponding path program 1 times [2022-11-19 05:36:34,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 05:36:34,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1299099033] [2022-11-19 05:36:34,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:36:34,474 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 [2022-11-19 05:36:34,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 05:36:34,476 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 05:36:34,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:36:34,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 05:36:34,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:36:34,923 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 05:36:34,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 05:36:34,924 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 05:36:34,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1299099033] [2022-11-19 05:36:34,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1299099033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:36:34,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 05:36:34,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 05:36:34,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438543249] [2022-11-19 05:36:34,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:36:34,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 05:36:34,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 05:36:34,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 05:36:34,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 05:36:34,927 INFO L87 Difference]: Start difference. First operand 113 states and 169 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, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 05:36:35,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:36:35,561 INFO L93 Difference]: Finished difference Result 249 states and 374 transitions. [2022-11-19 05:36:35,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 05:36:35,568 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, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-11-19 05:36:35,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:36:35,570 INFO L225 Difference]: With dead ends: 249 [2022-11-19 05:36:35,571 INFO L226 Difference]: Without dead ends: 188 [2022-11-19 05:36:35,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 05:36:35,574 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 53 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 05:36:35,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 453 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 05:36:35,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-19 05:36:35,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2022-11-19 05:36:35,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 160 states have (on average 1.4125) internal successors, (226), 159 states have internal predecessors, (226), 20 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (26), 26 states have call predecessors, (26), 19 states have call successors, (26) [2022-11-19 05:36:35,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 272 transitions. [2022-11-19 05:36:35,648 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 272 transitions. Word has length 41 [2022-11-19 05:36:35,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:36:35,650 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 272 transitions. [2022-11-19 05:36:35,651 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, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 05:36:35,651 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 272 transitions. [2022-11-19 05:36:35,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-19 05:36:35,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:36:35,657 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-19 05:36:35,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:35,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:35,871 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:36:35,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:36:35,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1180699246, now seen corresponding path program 1 times [2022-11-19 05:36:35,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 05:36:35,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597292440] [2022-11-19 05:36:35,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:36:35,873 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 [2022-11-19 05:36:35,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 05:36:35,874 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 05:36:35,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:36:35,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 05:36:35,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:36:36,358 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 05:36:36,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 05:36:36,359 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 05:36:36,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597292440] [2022-11-19 05:36:36,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597292440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:36:36,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 05:36:36,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 05:36:36,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926609911] [2022-11-19 05:36:36,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:36:36,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 05:36:36,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 05:36:36,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 05:36:36,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 05:36:36,362 INFO L87 Difference]: Start difference. First operand 184 states and 272 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 05:36:37,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:36:37,170 INFO L93 Difference]: Finished difference Result 257 states and 382 transitions. [2022-11-19 05:36:37,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 05:36:37,171 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-11-19 05:36:37,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:36:37,173 INFO L225 Difference]: With dead ends: 257 [2022-11-19 05:36:37,174 INFO L226 Difference]: Without dead ends: 202 [2022-11-19 05:36:37,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-19 05:36:37,176 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 105 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 05:36:37,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 539 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 05:36:37,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-19 05:36:37,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 175. [2022-11-19 05:36:37,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 153 states have (on average 1.392156862745098) internal successors, (213), 152 states have internal predecessors, (213), 18 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (24), 24 states have call predecessors, (24), 17 states have call successors, (24) [2022-11-19 05:36:37,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 255 transitions. [2022-11-19 05:36:37,199 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 255 transitions. Word has length 41 [2022-11-19 05:36:37,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:36:37,199 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 255 transitions. [2022-11-19 05:36:37,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 05:36:37,200 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 255 transitions. [2022-11-19 05:36:37,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 05:36:37,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:36:37,202 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-19 05:36:37,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:37,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:37,416 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:36:37,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:36:37,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1938435092, now seen corresponding path program 1 times [2022-11-19 05:36:37,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 05:36:37,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157639764] [2022-11-19 05:36:37,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:36:37,418 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 [2022-11-19 05:36:37,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 05:36:37,420 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 05:36:37,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:36:37,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 05:36:37,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:36:37,705 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 05:36:37,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 05:36:37,705 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 05:36:37,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157639764] [2022-11-19 05:36:37,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157639764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:36:37,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 05:36:37,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 05:36:37,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773118130] [2022-11-19 05:36:37,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:36:37,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 05:36:37,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 05:36:37,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 05:36:37,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 05:36:37,707 INFO L87 Difference]: Start difference. First operand 175 states and 255 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 05:36:37,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:36:37,872 INFO L93 Difference]: Finished difference Result 322 states and 476 transitions. [2022-11-19 05:36:37,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 05:36:37,873 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2022-11-19 05:36:37,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:36:37,875 INFO L225 Difference]: With dead ends: 322 [2022-11-19 05:36:37,875 INFO L226 Difference]: Without dead ends: 256 [2022-11-19 05:36:37,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 05:36:37,877 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 68 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 05:36:37,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 340 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 05:36:37,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-11-19 05:36:37,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 224. [2022-11-19 05:36:37,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 200 states have (on average 1.35) internal successors, (270), 199 states have internal predecessors, (270), 20 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (26), 26 states have call predecessors, (26), 19 states have call successors, (26) [2022-11-19 05:36:37,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 316 transitions. [2022-11-19 05:36:37,904 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 316 transitions. Word has length 44 [2022-11-19 05:36:37,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:36:37,905 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 316 transitions. [2022-11-19 05:36:37,905 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 05:36:37,906 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 316 transitions. [2022-11-19 05:36:37,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 05:36:37,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:36:37,908 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1] [2022-11-19 05:36:37,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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)] Forceful destruction successful, exit code 0 [2022-11-19 05:36:38,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:38,122 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:36:38,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:36:38,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1309251479, now seen corresponding path program 1 times [2022-11-19 05:36:38,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 05:36:38,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247790736] [2022-11-19 05:36:38,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:36:38,123 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 [2022-11-19 05:36:38,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 05:36:38,128 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 05:36:38,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:36:38,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 05:36:38,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:36:38,427 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 05:36:38,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 05:36:38,427 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 05:36:38,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247790736] [2022-11-19 05:36:38,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247790736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:36:38,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 05:36:38,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 05:36:38,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255554433] [2022-11-19 05:36:38,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:36:38,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 05:36:38,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 05:36:38,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 05:36:38,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 05:36:38,429 INFO L87 Difference]: Start difference. First operand 224 states and 316 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, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 05:36:38,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:36:38,855 INFO L93 Difference]: Finished difference Result 368 states and 519 transitions. [2022-11-19 05:36:38,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 05:36:38,856 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, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2022-11-19 05:36:38,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:36:38,859 INFO L225 Difference]: With dead ends: 368 [2022-11-19 05:36:38,859 INFO L226 Difference]: Without dead ends: 148 [2022-11-19 05:36:38,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 05:36:38,862 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 27 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 05:36:38,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 250 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 05:36:38,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-19 05:36:38,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 136. [2022-11-19 05:36:38,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 120 states have (on average 1.325) internal successors, (159), 122 states have internal predecessors, (159), 11 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (16), 13 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-19 05:36:38,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 186 transitions. [2022-11-19 05:36:38,885 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 186 transitions. Word has length 44 [2022-11-19 05:36:38,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:36:38,886 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 186 transitions. [2022-11-19 05:36:38,886 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, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 05:36:38,886 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 186 transitions. [2022-11-19 05:36:38,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-19 05:36:38,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:36:38,891 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1] [2022-11-19 05:36:38,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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)] Ended with exit code 0 [2022-11-19 05:36:39,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:39,105 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:36:39,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:36:39,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1643290396, now seen corresponding path program 1 times [2022-11-19 05:36:39,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 05:36:39,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769868406] [2022-11-19 05:36:39,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:36:39,106 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 [2022-11-19 05:36:39,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 05:36:39,107 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 05:36:39,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:36:39,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-19 05:36:39,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:36:40,379 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 05:36:40,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 05:36:41,120 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 05:36:41,120 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 05:36:41,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769868406] [2022-11-19 05:36:41,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769868406] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 05:36:41,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 05:36:41,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-11-19 05:36:41,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538577638] [2022-11-19 05:36:41,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:36:41,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 05:36:41,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 05:36:41,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 05:36:41,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-19 05:36:41,123 INFO L87 Difference]: Start difference. First operand 136 states and 186 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 05:36:43,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:36:43,430 INFO L93 Difference]: Finished difference Result 268 states and 393 transitions. [2022-11-19 05:36:43,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 05:36:43,431 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-11-19 05:36:43,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:36:43,433 INFO L225 Difference]: With dead ends: 268 [2022-11-19 05:36:43,433 INFO L226 Difference]: Without dead ends: 232 [2022-11-19 05:36:43,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-11-19 05:36:43,435 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 193 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-19 05:36:43,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 498 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-19 05:36:43,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-19 05:36:43,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 164. [2022-11-19 05:36:43,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 145 states have (on average 1.3172413793103448) internal successors, (191), 148 states have internal predecessors, (191), 14 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (19), 16 states have call predecessors, (19), 13 states have call successors, (19) [2022-11-19 05:36:43,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 224 transitions. [2022-11-19 05:36:43,457 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 224 transitions. Word has length 45 [2022-11-19 05:36:43,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:36:43,457 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 224 transitions. [2022-11-19 05:36:43,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 05:36:43,458 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 224 transitions. [2022-11-19 05:36:43,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-19 05:36:43,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:36:43,459 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1] [2022-11-19 05:36:43,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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)] Ended with exit code 0 [2022-11-19 05:36:43,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:43,673 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:36:43,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:36:43,673 INFO L85 PathProgramCache]: Analyzing trace with hash -876669538, now seen corresponding path program 1 times [2022-11-19 05:36:43,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 05:36:43,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032723545] [2022-11-19 05:36:43,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:36:43,678 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 [2022-11-19 05:36:43,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 05:36:43,679 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 05:36:43,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:36:43,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 05:36:43,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:36:43,886 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 05:36:43,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 05:36:43,886 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 05:36:43,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032723545] [2022-11-19 05:36:43,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032723545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:36:43,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 05:36:43,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 05:36:43,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591224914] [2022-11-19 05:36:43,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:36:43,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 05:36:43,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 05:36:43,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 05:36:43,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 05:36:43,888 INFO L87 Difference]: Start difference. First operand 164 states and 224 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 05:36:44,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:36:44,087 INFO L93 Difference]: Finished difference Result 171 states and 230 transitions. [2022-11-19 05:36:44,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 05:36:44,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-11-19 05:36:44,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:36:44,089 INFO L225 Difference]: With dead ends: 171 [2022-11-19 05:36:44,089 INFO L226 Difference]: Without dead ends: 164 [2022-11-19 05:36:44,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 05:36:44,090 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 5 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 05:36:44,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 381 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 05:36:44,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-19 05:36:44,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-11-19 05:36:44,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 145 states have (on average 1.296551724137931) internal successors, (188), 148 states have internal predecessors, (188), 14 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (19), 16 states have call predecessors, (19), 13 states have call successors, (19) [2022-11-19 05:36:44,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 221 transitions. [2022-11-19 05:36:44,106 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 221 transitions. Word has length 45 [2022-11-19 05:36:44,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:36:44,107 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 221 transitions. [2022-11-19 05:36:44,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 05:36:44,107 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 221 transitions. [2022-11-19 05:36:44,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-19 05:36:44,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:36:44,109 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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] [2022-11-19 05:36:44,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:44,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:44,328 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:36:44,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:36:44,328 INFO L85 PathProgramCache]: Analyzing trace with hash 457064955, now seen corresponding path program 2 times [2022-11-19 05:36:44,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 05:36:44,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230964617] [2022-11-19 05:36:44,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 05:36:44,328 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 [2022-11-19 05:36:44,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 05:36:44,329 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 05:36:44,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:44,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-19 05:36:44,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 05:36:44,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 05:36:44,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:36:44,909 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-19 05:36:44,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 05:36:44,909 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 05:36:44,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230964617] [2022-11-19 05:36:44,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230964617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:36:44,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 05:36:44,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 05:36:44,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482378251] [2022-11-19 05:36:44,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:36:44,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 05:36:44,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 05:36:44,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 05:36:44,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 05:36:44,911 INFO L87 Difference]: Start difference. First operand 164 states and 221 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 05:36:45,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:36:45,401 INFO L93 Difference]: Finished difference Result 203 states and 278 transitions. [2022-11-19 05:36:45,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 05:36:45,402 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-11-19 05:36:45,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:36:45,404 INFO L225 Difference]: With dead ends: 203 [2022-11-19 05:36:45,404 INFO L226 Difference]: Without dead ends: 201 [2022-11-19 05:36:45,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 05:36:45,405 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 38 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 05:36:45,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 600 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 14 Unchecked, 0.2s Time] [2022-11-19 05:36:45,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-19 05:36:45,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 168. [2022-11-19 05:36:45,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 148 states have (on average 1.2905405405405406) internal successors, (191), 151 states have internal predecessors, (191), 14 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (19), 16 states have call predecessors, (19), 13 states have call successors, (19) [2022-11-19 05:36:45,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 224 transitions. [2022-11-19 05:36:45,426 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 224 transitions. Word has length 45 [2022-11-19 05:36:45,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:36:45,427 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 224 transitions. [2022-11-19 05:36:45,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 05:36:45,427 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 224 transitions. [2022-11-19 05:36:45,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-19 05:36:45,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:36:45,428 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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] [2022-11-19 05:36:45,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:45,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:45,643 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:36:45,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:36:45,644 INFO L85 PathProgramCache]: Analyzing trace with hash 514323257, now seen corresponding path program 1 times [2022-11-19 05:36:45,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 05:36:45,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867693042] [2022-11-19 05:36:45,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:36:45,644 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 [2022-11-19 05:36:45,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 05:36:45,645 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 05:36:45,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:36:45,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 05:36:45,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:36:46,112 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-19 05:36:46,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 05:36:46,113 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 05:36:46,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867693042] [2022-11-19 05:36:46,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867693042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:36:46,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 05:36:46,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 05:36:46,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811411997] [2022-11-19 05:36:46,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:36:46,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 05:36:46,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 05:36:46,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 05:36:46,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 05:36:46,115 INFO L87 Difference]: Start difference. First operand 168 states and 224 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 05:36:46,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:36:46,503 INFO L93 Difference]: Finished difference Result 213 states and 290 transitions. [2022-11-19 05:36:46,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 05:36:46,504 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-11-19 05:36:46,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:36:46,506 INFO L225 Difference]: With dead ends: 213 [2022-11-19 05:36:46,506 INFO L226 Difference]: Without dead ends: 211 [2022-11-19 05:36:46,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 05:36:46,508 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 38 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 05:36:46,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 469 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 12 Unchecked, 0.2s Time] [2022-11-19 05:36:46,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-19 05:36:46,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 172. [2022-11-19 05:36:46,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 151 states have (on average 1.2847682119205297) internal successors, (194), 154 states have internal predecessors, (194), 14 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (19), 16 states have call predecessors, (19), 13 states have call successors, (19) [2022-11-19 05:36:46,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 227 transitions. [2022-11-19 05:36:46,528 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 227 transitions. Word has length 45 [2022-11-19 05:36:46,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:36:46,528 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 227 transitions. [2022-11-19 05:36:46,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 05:36:46,529 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 227 transitions. [2022-11-19 05:36:46,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-19 05:36:46,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:36:46,530 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1] [2022-11-19 05:36:46,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:46,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:46,743 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:36:46,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:36:46,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1895517033, now seen corresponding path program 1 times [2022-11-19 05:36:46,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 05:36:46,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55606655] [2022-11-19 05:36:46,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:36:46,745 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 [2022-11-19 05:36:46,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 05:36:46,746 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 05:36:46,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:46,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:36:46,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 05:36:46,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:36:47,011 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 05:36:47,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 05:36:47,012 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 05:36:47,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55606655] [2022-11-19 05:36:47,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55606655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:36:47,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 05:36:47,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 05:36:47,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261174985] [2022-11-19 05:36:47,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:36:47,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 05:36:47,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 05:36:47,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 05:36:47,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 05:36:47,014 INFO L87 Difference]: Start difference. First operand 172 states and 227 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 05:36:47,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:36:47,195 INFO L93 Difference]: Finished difference Result 284 states and 385 transitions. [2022-11-19 05:36:47,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 05:36:47,196 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2022-11-19 05:36:47,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:36:47,198 INFO L225 Difference]: With dead ends: 284 [2022-11-19 05:36:47,198 INFO L226 Difference]: Without dead ends: 232 [2022-11-19 05:36:47,199 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 [2022-11-19 05:36:47,199 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 77 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 05:36:47,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 316 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 05:36:47,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-19 05:36:47,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 191. [2022-11-19 05:36:47,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 169 states have (on average 1.2899408284023668) internal successors, (218), 171 states have internal predecessors, (218), 15 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (20), 17 states have call predecessors, (20), 14 states have call successors, (20) [2022-11-19 05:36:47,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 253 transitions. [2022-11-19 05:36:47,223 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 253 transitions. Word has length 46 [2022-11-19 05:36:47,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:36:47,223 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 253 transitions. [2022-11-19 05:36:47,223 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 05:36:47,223 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 253 transitions. [2022-11-19 05:36:47,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-19 05:36:47,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:36:47,225 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1] [2022-11-19 05:36:47,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:47,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:47,437 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:36:47,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:36:47,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1657751029, now seen corresponding path program 1 times [2022-11-19 05:36:47,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 05:36:47,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297644169] [2022-11-19 05:36:47,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:36:47,438 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 [2022-11-19 05:36:47,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 05:36:47,439 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 05:36:47,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:36:47,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 05:36:47,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:36:47,604 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 05:36:47,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 05:36:47,605 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 05:36:47,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297644169] [2022-11-19 05:36:47,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1297644169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:36:47,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 05:36:47,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 05:36:47,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623310037] [2022-11-19 05:36:47,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:36:47,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 05:36:47,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 05:36:47,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 05:36:47,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 05:36:47,607 INFO L87 Difference]: Start difference. First operand 191 states and 253 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 05:36:47,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:36:47,741 INFO L93 Difference]: Finished difference Result 206 states and 269 transitions. [2022-11-19 05:36:47,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 05:36:47,742 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49 [2022-11-19 05:36:47,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:36:47,744 INFO L225 Difference]: With dead ends: 206 [2022-11-19 05:36:47,745 INFO L226 Difference]: Without dead ends: 167 [2022-11-19 05:36:47,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 05:36:47,746 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 1 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 05:36:47,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 285 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 05:36:47,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-11-19 05:36:47,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2022-11-19 05:36:47,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 145 states have (on average 1.303448275862069) internal successors, (189), 148 states have internal predecessors, (189), 15 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (18), 16 states have call predecessors, (18), 14 states have call successors, (18) [2022-11-19 05:36:47,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 222 transitions. [2022-11-19 05:36:47,774 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 222 transitions. Word has length 49 [2022-11-19 05:36:47,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:36:47,774 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 222 transitions. [2022-11-19 05:36:47,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 05:36:47,775 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 222 transitions. [2022-11-19 05:36:47,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-19 05:36:47,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:36:47,776 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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] [2022-11-19 05:36:47,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:47,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:47,991 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:36:47,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:36:47,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1176937396, now seen corresponding path program 1 times [2022-11-19 05:36:47,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 05:36:47,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076739918] [2022-11-19 05:36:47,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:36:47,992 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 [2022-11-19 05:36:47,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 05:36:47,993 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 05:36:47,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:36:48,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 05:36:48,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:36:48,275 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-19 05:36:48,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 05:36:48,276 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 05:36:48,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076739918] [2022-11-19 05:36:48,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076739918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:36:48,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 05:36:48,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 05:36:48,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402901395] [2022-11-19 05:36:48,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:36:48,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 05:36:48,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 05:36:48,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 05:36:48,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 05:36:48,278 INFO L87 Difference]: Start difference. First operand 167 states and 222 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 05:36:48,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:36:48,752 INFO L93 Difference]: Finished difference Result 242 states and 327 transitions. [2022-11-19 05:36:48,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 05:36:48,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2022-11-19 05:36:48,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:36:48,754 INFO L225 Difference]: With dead ends: 242 [2022-11-19 05:36:48,754 INFO L226 Difference]: Without dead ends: 200 [2022-11-19 05:36:48,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-19 05:36:48,755 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 132 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 05:36:48,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 345 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 05:36:48,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-19 05:36:48,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 167. [2022-11-19 05:36:48,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 145 states have (on average 1.289655172413793) internal successors, (187), 148 states have internal predecessors, (187), 15 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (18), 16 states have call predecessors, (18), 14 states have call successors, (18) [2022-11-19 05:36:48,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 220 transitions. [2022-11-19 05:36:48,790 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 220 transitions. Word has length 50 [2022-11-19 05:36:48,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:36:48,790 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 220 transitions. [2022-11-19 05:36:48,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 05:36:48,791 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 220 transitions. [2022-11-19 05:36:48,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-19 05:36:48,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:36:48,792 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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] [2022-11-19 05:36:48,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:49,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:49,006 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:36:49,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:36:49,007 INFO L85 PathProgramCache]: Analyzing trace with hash -475872818, now seen corresponding path program 1 times [2022-11-19 05:36:49,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 05:36:49,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829384569] [2022-11-19 05:36:49,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:36:49,008 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 [2022-11-19 05:36:49,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 05:36:49,009 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 05:36:49,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:36:49,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 05:36:49,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:36:49,213 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-19 05:36:49,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 05:36:49,213 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 05:36:49,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829384569] [2022-11-19 05:36:49,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1829384569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:36:49,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 05:36:49,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 05:36:49,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069594515] [2022-11-19 05:36:49,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:36:49,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 05:36:49,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 05:36:49,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 05:36:49,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 05:36:49,215 INFO L87 Difference]: Start difference. First operand 167 states and 220 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 05:36:49,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:36:49,543 INFO L93 Difference]: Finished difference Result 240 states and 313 transitions. [2022-11-19 05:36:49,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 05:36:49,544 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2022-11-19 05:36:49,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:36:49,545 INFO L225 Difference]: With dead ends: 240 [2022-11-19 05:36:49,546 INFO L226 Difference]: Without dead ends: 213 [2022-11-19 05:36:49,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 05:36:49,547 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 113 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 05:36:49,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 260 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 05:36:49,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-11-19 05:36:49,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 167. [2022-11-19 05:36:49,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 145 states have (on average 1.282758620689655) internal successors, (186), 148 states have internal predecessors, (186), 15 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (18), 16 states have call predecessors, (18), 14 states have call successors, (18) [2022-11-19 05:36:49,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 219 transitions. [2022-11-19 05:36:49,570 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 219 transitions. Word has length 50 [2022-11-19 05:36:49,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:36:49,571 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 219 transitions. [2022-11-19 05:36:49,571 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 05:36:49,571 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 219 transitions. [2022-11-19 05:36:49,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-19 05:36:49,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:36:49,572 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 05:36:49,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:49,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:49,779 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:36:49,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:36:49,780 INFO L85 PathProgramCache]: Analyzing trace with hash 33068664, now seen corresponding path program 1 times [2022-11-19 05:36:49,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 05:36:49,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911736710] [2022-11-19 05:36:49,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:36:49,781 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 [2022-11-19 05:36:49,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 05:36:49,783 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 05:36:49,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:36:49,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 05:36:49,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:36:50,269 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 05:36:50,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 05:36:50,270 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 05:36:50,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911736710] [2022-11-19 05:36:50,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1911736710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:36:50,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 05:36:50,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 05:36:50,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395482689] [2022-11-19 05:36:50,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:36:50,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 05:36:50,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 05:36:50,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 05:36:50,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 05:36:50,272 INFO L87 Difference]: Start difference. First operand 167 states and 219 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 05:36:52,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:36:52,150 INFO L93 Difference]: Finished difference Result 271 states and 371 transitions. [2022-11-19 05:36:52,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 05:36:52,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51 [2022-11-19 05:36:52,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:36:52,153 INFO L225 Difference]: With dead ends: 271 [2022-11-19 05:36:52,153 INFO L226 Difference]: Without dead ends: 247 [2022-11-19 05:36:52,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-19 05:36:52,154 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 177 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-19 05:36:52,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 580 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-19 05:36:52,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-11-19 05:36:52,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 200. [2022-11-19 05:36:52,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 174 states have (on average 1.2816091954022988) internal successors, (223), 178 states have internal predecessors, (223), 19 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (22), 20 states have call predecessors, (22), 18 states have call successors, (22) [2022-11-19 05:36:52,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 264 transitions. [2022-11-19 05:36:52,185 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 264 transitions. Word has length 51 [2022-11-19 05:36:52,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:36:52,186 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 264 transitions. [2022-11-19 05:36:52,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 05:36:52,186 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 264 transitions. [2022-11-19 05:36:52,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-19 05:36:52,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:36:52,188 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 05:36:52,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:52,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:52,402 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:36:52,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:36:52,402 INFO L85 PathProgramCache]: Analyzing trace with hash 2004133062, now seen corresponding path program 1 times [2022-11-19 05:36:52,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 05:36:52,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553818057] [2022-11-19 05:36:52,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:36:52,403 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 [2022-11-19 05:36:52,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 05:36:52,404 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 05:36:52,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:36:52,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 05:36:52,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:36:52,641 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 05:36:52,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 05:36:52,641 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 05:36:52,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553818057] [2022-11-19 05:36:52,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553818057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:36:52,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 05:36:52,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 05:36:52,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703114677] [2022-11-19 05:36:52,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:36:52,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 05:36:52,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 05:36:52,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 05:36:52,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 05:36:52,644 INFO L87 Difference]: Start difference. First operand 200 states and 264 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 05:36:52,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:36:52,835 INFO L93 Difference]: Finished difference Result 242 states and 313 transitions. [2022-11-19 05:36:52,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 05:36:52,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51 [2022-11-19 05:36:52,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:36:52,839 INFO L225 Difference]: With dead ends: 242 [2022-11-19 05:36:52,839 INFO L226 Difference]: Without dead ends: 208 [2022-11-19 05:36:52,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 05:36:52,841 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 87 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 05:36:52,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 233 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 05:36:52,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-19 05:36:52,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 200. [2022-11-19 05:36:52,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 174 states have (on average 1.2126436781609196) internal successors, (211), 178 states have internal predecessors, (211), 19 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (22), 20 states have call predecessors, (22), 18 states have call successors, (22) [2022-11-19 05:36:52,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 252 transitions. [2022-11-19 05:36:52,872 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 252 transitions. Word has length 51 [2022-11-19 05:36:52,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:36:52,873 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 252 transitions. [2022-11-19 05:36:52,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 05:36:52,873 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 252 transitions. [2022-11-19 05:36:52,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-19 05:36:52,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:36:52,874 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 05:36:52,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:53,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 05:36:53,088 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:36:53,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:36:53,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1153296820, now seen corresponding path program 1 times [2022-11-19 05:36:53,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 05:36:53,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418603150] [2022-11-19 05:36:53,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:36:53,089 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 [2022-11-19 05:36:53,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 05:36:53,091 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 05:36:53,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ea9a5f-7c4e-4618-b18e-41dee92b59ab/bin/utaipan-I9t0OCRTmS/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