./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh --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 52e7e3a0d80d0519558794c69b54bf5c07c5549c1d780651d891121aff50735c --- 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-2329fc7 [2022-12-14 12:28:10,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:28:10,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:28:10,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:28:10,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:28:10,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:28:10,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:28:10,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:28:10,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:28:10,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:28:10,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:28:10,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:28:10,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:28:10,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:28:10,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:28:10,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:28:10,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:28:10,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:28:10,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:28:10,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:28:10,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:28:10,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:28:10,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:28:10,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:28:10,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:28:10,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:28:10,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:28:10,590 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:28:10,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:28:10,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:28:10,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:28:10,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:28:10,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:28:10,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:28:10,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:28:10,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:28:10,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:28:10,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:28:10,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:28:10,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:28:10,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:28:10,596 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 12:28:10,609 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:28:10,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:28:10,610 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:28:10,610 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:28:10,610 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:28:10,610 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:28:10,610 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:28:10,610 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:28:10,611 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:28:10,611 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:28:10,611 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:28:10,611 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:28:10,611 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:28:10,611 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:28:10,611 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:28:10,611 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:28:10,611 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:28:10,611 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:28:10,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:28:10,612 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:28:10,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:28:10,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:28:10,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:28:10,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:28:10,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:28:10,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:28:10,613 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:28:10,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:28:10,613 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:28:10,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:28:10,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:28:10,613 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:28:10,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:28:10,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:28:10,614 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:28:10,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:28:10,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:28:10,614 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:28:10,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:28:10,614 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:28:10,614 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:28:10,614 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_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52e7e3a0d80d0519558794c69b54bf5c07c5549c1d780651d891121aff50735c [2022-12-14 12:28:10,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:28:10,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:28:10,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:28:10,794 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:28:10,794 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:28:10,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c [2022-12-14 12:28:13,366 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:28:13,544 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:28:13,545 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c [2022-12-14 12:28:13,552 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/data/f9c215c2a/78e94f2ceb174a81b7b53dc8762faea5/FLAG047451551 [2022-12-14 12:28:13,942 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/data/f9c215c2a/78e94f2ceb174a81b7b53dc8762faea5 [2022-12-14 12:28:13,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:28:13,945 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:28:13,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:28:13,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:28:13,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:28:13,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:28:13" (1/1) ... [2022-12-14 12:28:13,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@223971c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:13, skipping insertion in model container [2022-12-14 12:28:13,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:28:13" (1/1) ... [2022-12-14 12:28:13,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:28:13,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:28:14,084 WARN L237 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_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c[1999,2012] [2022-12-14 12:28:14,088 WARN L237 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_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c[2368,2381] [2022-12-14 12:28:14,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:28:14,121 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:28:14,131 WARN L237 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_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c[1999,2012] [2022-12-14 12:28:14,132 WARN L237 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_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c[2368,2381] [2022-12-14 12:28:14,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:28:14,162 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:28:14,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:14 WrapperNode [2022-12-14 12:28:14,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:28:14,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:28:14,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:28:14,163 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:28:14,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:14" (1/1) ... [2022-12-14 12:28:14,177 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:14" (1/1) ... [2022-12-14 12:28:14,195 INFO L138 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 187 [2022-12-14 12:28:14,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:28:14,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:28:14,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:28:14,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:28:14,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:14" (1/1) ... [2022-12-14 12:28:14,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:14" (1/1) ... [2022-12-14 12:28:14,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:14" (1/1) ... [2022-12-14 12:28:14,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:14" (1/1) ... [2022-12-14 12:28:14,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:14" (1/1) ... [2022-12-14 12:28:14,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:14" (1/1) ... [2022-12-14 12:28:14,214 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:14" (1/1) ... [2022-12-14 12:28:14,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:14" (1/1) ... [2022-12-14 12:28:14,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:28:14,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:28:14,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:28:14,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:28:14,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:14" (1/1) ... [2022-12-14 12:28:14,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:28:14,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:28:14,244 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:28:14,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:28:14,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:28:14,280 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-12-14 12:28:14,280 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-12-14 12:28:14,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 12:28:14,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:28:14,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:28:14,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 12:28:14,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 12:28:14,341 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:28:14,342 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:28:14,659 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:28:14,817 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:28:14,817 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 12:28:14,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:28:14 BoogieIcfgContainer [2022-12-14 12:28:14,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:28:14,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:28:14,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:28:14,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:28:14,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:28:13" (1/3) ... [2022-12-14 12:28:14,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337151c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:28:14, skipping insertion in model container [2022-12-14 12:28:14,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:14" (2/3) ... [2022-12-14 12:28:14,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337151c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:28:14, skipping insertion in model container [2022-12-14 12:28:14,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:28:14" (3/3) ... [2022-12-14 12:28:14,825 INFO L112 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_3a.c.cil.c [2022-12-14 12:28:14,839 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:28:14,839 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 12:28:14,873 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:28:14,877 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;@508154fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:28:14,878 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 12:28:14,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 38 states have internal predecessors, (55), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 12:28:14,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 12:28:14,886 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:28:14,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 12:28:14,887 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:28:14,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:28:14,890 INFO L85 PathProgramCache]: Analyzing trace with hash 10101421, now seen corresponding path program 1 times [2022-12-14 12:28:14,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:28:14,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794622673] [2022-12-14 12:28:14,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:28:14,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:28:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 12:28:14,967 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 12:28:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 12:28:14,986 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 12:28:14,987 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 12:28:14,988 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-12-14 12:28:14,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-12-14 12:28:14,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 12:28:14,993 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 12:28:14,996 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 12:28:15,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 12:28:15 BoogieIcfgContainer [2022-12-14 12:28:15,008 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 12:28:15,008 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 12:28:15,008 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 12:28:15,009 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 12:28:15,009 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:28:14" (3/4) ... [2022-12-14 12:28:15,011 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 12:28:15,011 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 12:28:15,012 INFO L158 Benchmark]: Toolchain (without parser) took 1067.04ms. Allocated memory is still 125.8MB. Free memory was 91.2MB in the beginning and 54.9MB in the end (delta: 36.3MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-12-14 12:28:15,012 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 100.7MB. Free memory is still 48.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 12:28:15,013 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.82ms. Allocated memory is still 125.8MB. Free memory was 90.8MB in the beginning and 76.6MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 12:28:15,013 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.11ms. Allocated memory is still 125.8MB. Free memory was 76.6MB in the beginning and 74.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 12:28:15,013 INFO L158 Benchmark]: Boogie Preprocessor took 21.89ms. Allocated memory is still 125.8MB. Free memory was 74.5MB in the beginning and 72.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 12:28:15,014 INFO L158 Benchmark]: RCFGBuilder took 601.21ms. Allocated memory is still 125.8MB. Free memory was 72.4MB in the beginning and 69.6MB in the end (delta: 2.9MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. [2022-12-14 12:28:15,014 INFO L158 Benchmark]: TraceAbstraction took 187.54ms. Allocated memory is still 125.8MB. Free memory was 68.8MB in the beginning and 55.6MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 12:28:15,014 INFO L158 Benchmark]: Witness Printer took 2.94ms. Allocated memory is still 125.8MB. Free memory is still 54.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 12:28:15,016 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 100.7MB. Free memory is still 48.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 216.82ms. Allocated memory is still 125.8MB. Free memory was 90.8MB in the beginning and 76.6MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.11ms. Allocated memory is still 125.8MB. Free memory was 76.6MB in the beginning and 74.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.89ms. Allocated memory is still 125.8MB. Free memory was 74.5MB in the beginning and 72.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 601.21ms. Allocated memory is still 125.8MB. Free memory was 72.4MB in the beginning and 69.6MB in the end (delta: 2.9MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. * TraceAbstraction took 187.54ms. Allocated memory is still 125.8MB. Free memory was 68.8MB in the beginning and 55.6MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 2.94ms. Allocated memory is still 125.8MB. Free memory is still 54.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L320] COND TRUE __VERIFIER_nondet_int() [L321] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [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 < 1.39844f) VAL [IN=53, x=53] [L48] reach_error() VAL [IN=53, x=53] - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 45 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, 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=45occurred 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 [2022-12-14 12:28:15,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh --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 52e7e3a0d80d0519558794c69b54bf5c07c5549c1d780651d891121aff50735c --- 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-2329fc7 [2022-12-14 12:28:16,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:28:16,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:28:16,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:28:16,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:28:16,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:28:16,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:28:16,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:28:16,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:28:16,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:28:16,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:28:16,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:28:16,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:28:16,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:28:16,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:28:16,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:28:16,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:28:16,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:28:16,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:28:16,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:28:16,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:28:16,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:28:16,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:28:16,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:28:16,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:28:16,548 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:28:16,548 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:28:16,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:28:16,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:28:16,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:28:16,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:28:16,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:28:16,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:28:16,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:28:16,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:28:16,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:28:16,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:28:16,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:28:16,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:28:16,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:28:16,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:28:16,559 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 12:28:16,577 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:28:16,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:28:16,577 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:28:16,578 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:28:16,578 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:28:16,579 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:28:16,579 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:28:16,579 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:28:16,579 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:28:16,579 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:28:16,579 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:28:16,580 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:28:16,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:28:16,580 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:28:16,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:28:16,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:28:16,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:28:16,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:28:16,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:28:16,581 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 12:28:16,581 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 12:28:16,581 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 12:28:16,581 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:28:16,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:28:16,582 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:28:16,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:28:16,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:28:16,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 12:28:16,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:28:16,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:28:16,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:28:16,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:28:16,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:28:16,583 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 12:28:16,583 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 12:28:16,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:28:16,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:28:16,584 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 12:28:16,584 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_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52e7e3a0d80d0519558794c69b54bf5c07c5549c1d780651d891121aff50735c [2022-12-14 12:28:16,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:28:16,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:28:16,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:28:16,839 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:28:16,839 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:28:16,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c [2022-12-14 12:28:19,329 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:28:19,496 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:28:19,497 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c [2022-12-14 12:28:19,505 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/data/6c2f1ba98/b8265c030cc74d95b97b5b99f9b32424/FLAG62f187033 [2022-12-14 12:28:19,519 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/data/6c2f1ba98/b8265c030cc74d95b97b5b99f9b32424 [2022-12-14 12:28:19,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:28:19,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:28:19,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:28:19,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:28:19,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:28:19,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:28:19" (1/1) ... [2022-12-14 12:28:19,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28aa212a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:19, skipping insertion in model container [2022-12-14 12:28:19,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:28:19" (1/1) ... [2022-12-14 12:28:19,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:28:19,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:28:19,703 WARN L237 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_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c[1999,2012] [2022-12-14 12:28:19,708 WARN L237 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_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c[2368,2381] [2022-12-14 12:28:19,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:28:19,756 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:28:19,769 WARN L237 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_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c[1999,2012] [2022-12-14 12:28:19,771 WARN L237 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_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c[2368,2381] [2022-12-14 12:28:19,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:28:19,819 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:28:19,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:19 WrapperNode [2022-12-14 12:28:19,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:28:19,821 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:28:19,822 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:28:19,822 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:28:19,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:19" (1/1) ... [2022-12-14 12:28:19,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:19" (1/1) ... [2022-12-14 12:28:19,862 INFO L138 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2022-12-14 12:28:19,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:28:19,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:28:19,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:28:19,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:28:19,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:19" (1/1) ... [2022-12-14 12:28:19,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:19" (1/1) ... [2022-12-14 12:28:19,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:19" (1/1) ... [2022-12-14 12:28:19,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:19" (1/1) ... [2022-12-14 12:28:19,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:19" (1/1) ... [2022-12-14 12:28:19,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:19" (1/1) ... [2022-12-14 12:28:19,889 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:19" (1/1) ... [2022-12-14 12:28:19,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:19" (1/1) ... [2022-12-14 12:28:19,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:28:19,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:28:19,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:28:19,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:28:19,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:19" (1/1) ... [2022-12-14 12:28:19,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:28:19,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:28:19,925 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:28:19,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:28:19,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:28:19,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 12:28:19,959 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-12-14 12:28:19,960 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-12-14 12:28:19,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:28:19,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:28:19,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 12:28:19,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 12:28:20,026 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:28:20,028 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:28:22,417 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:28:22,421 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:28:22,421 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 12:28:22,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:28:22 BoogieIcfgContainer [2022-12-14 12:28:22,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:28:22,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:28:22,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:28:22,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:28:22,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:28:19" (1/3) ... [2022-12-14 12:28:22,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f801ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:28:22, skipping insertion in model container [2022-12-14 12:28:22,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:19" (2/3) ... [2022-12-14 12:28:22,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f801ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:28:22, skipping insertion in model container [2022-12-14 12:28:22,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:28:22" (3/3) ... [2022-12-14 12:28:22,428 INFO L112 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_3a.c.cil.c [2022-12-14 12:28:22,441 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:28:22,441 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 12:28:22,473 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:28:22,478 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;@7a28ada9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:28:22,478 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 12:28:22,481 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 50 states have (on average 1.56) internal successors, (78), 53 states have internal predecessors, (78), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 12:28:22,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 12:28:22,485 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:28:22,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:28:22,486 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:28:22,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:28:22,490 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-12-14 12:28:22,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:28:22,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299994808] [2022-12-14 12:28:22,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:28:22,499 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 [2022-12-14 12:28:22,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:28:22,500 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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) [2022-12-14 12:28:22,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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 [2022-12-14 12:28:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:28:22,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 12:28:22,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:28:22,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:28:22,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:28:22,977 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:28:22,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299994808] [2022-12-14 12:28:22,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299994808] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:28:22,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:28:22,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:28:22,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297167101] [2022-12-14 12:28:22,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:28:22,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 12:28:22,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:28:23,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 12:28:23,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 12:28:23,003 INFO L87 Difference]: Start difference. First operand has 60 states, 50 states have (on average 1.56) internal successors, (78), 53 states have internal predecessors, (78), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:28:23,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:28:23,023 INFO L93 Difference]: Finished difference Result 115 states and 173 transitions. [2022-12-14 12:28:23,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 12:28:23,024 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 [2022-12-14 12:28:23,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:28:23,030 INFO L225 Difference]: With dead ends: 115 [2022-12-14 12:28:23,030 INFO L226 Difference]: Without dead ends: 51 [2022-12-14 12:28:23,032 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 [2022-12-14 12:28:23,034 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:28:23,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:28:23,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-12-14 12:28:23,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-12-14 12:28:23,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 44 states have internal predecessors, (61), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 12:28:23,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 70 transitions. [2022-12-14 12:28:23,066 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 70 transitions. Word has length 7 [2022-12-14 12:28:23,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:28:23,066 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 70 transitions. [2022-12-14 12:28:23,066 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) [2022-12-14 12:28:23,067 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 70 transitions. [2022-12-14 12:28:23,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 12:28:23,067 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:28:23,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:28:23,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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 [2022-12-14 12:28:23,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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 [2022-12-14 12:28:23,269 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:28:23,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:28:23,271 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-12-14 12:28:23,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:28:23,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [8841043] [2022-12-14 12:28:23,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:28:23,274 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 [2022-12-14 12:28:23,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:28:23,301 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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) [2022-12-14 12:28:23,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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 [2022-12-14 12:42:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:42:17,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 12:42:17,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:42:31,496 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 [2022-12-14 12:43:04,905 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.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 (/ 34961.0 25000.0)))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from false [2022-12-14 12:43:06,949 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.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 (/ 34961.0 25000.0)))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from true [2022-12-14 12:43:06,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:43:06,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:43:06,951 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:43:06,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [8841043] [2022-12-14 12:43:06,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [8841043] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:43:06,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:43:06,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 12:43:06,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326794100] [2022-12-14 12:43:06,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:43:06,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 12:43:06,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:43:06,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 12:43:06,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2022-12-14 12:43:06,955 INFO L87 Difference]: Start difference. First operand 51 states and 70 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:43:09,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 12:43:11,533 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.lt |c_ULTIMATE.start_main1_~IN~0#1| .cse0)) (.cse2 (fp.geq |c_ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)))) (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (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)))) .cse1 (or (and (or (not .cse1) (not .cse2)) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))) (and .cse1 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32)) .cse2)) .cse2 (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2022-12-14 12:43:11,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:43:11,673 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2022-12-14 12:43:11,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 12:43:11,673 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 [2022-12-14 12:43:11,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:43:11,674 INFO L225 Difference]: With dead ends: 51 [2022-12-14 12:43:11,674 INFO L226 Difference]: Without dead ends: 46 [2022-12-14 12:43:11,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=20, Invalid=18, Unknown=4, NotChecked=30, Total=72 [2022-12-14 12:43:11,676 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 66 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 12:43:11,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 175 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 1 Unknown, 136 Unchecked, 2.4s Time] [2022-12-14 12:43:11,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-12-14 12:43:11,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-12-14 12:43:11,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 39 states have (on average 1.435897435897436) internal successors, (56), 39 states have internal predecessors, (56), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 12:43:11,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 65 transitions. [2022-12-14 12:43:11,682 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 65 transitions. Word has length 7 [2022-12-14 12:43:11,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:43:11,682 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 65 transitions. [2022-12-14 12:43:11,682 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) [2022-12-14 12:43:11,682 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 65 transitions. [2022-12-14 12:43:11,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-14 12:43:11,683 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:43:11,683 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:43:11,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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 [2022-12-14 12:43:11,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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 [2022-12-14 12:43:11,886 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:43:11,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:43:11,887 INFO L85 PathProgramCache]: Analyzing trace with hash 220430878, now seen corresponding path program 1 times [2022-12-14 12:43:11,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:43:11,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671311417] [2022-12-14 12:43:11,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:11,890 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 [2022-12-14 12:43:11,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:43:11,892 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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) [2022-12-14 12:43:11,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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 [2022-12-14 12:43:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:11,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:43:11,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:43:12,053 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:43:12,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:43:12,053 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:43:12,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671311417] [2022-12-14 12:43:12,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671311417] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:43:12,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:43:12,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 12:43:12,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428625253] [2022-12-14 12:43:12,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:43:12,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:43:12,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:43:12,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:43:12,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:43:12,056 INFO L87 Difference]: Start difference. First operand 46 states and 65 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 12:43:12,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:43:12,388 INFO L93 Difference]: Finished difference Result 102 states and 148 transitions. [2022-12-14 12:43:12,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:43:12,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2022-12-14 12:43:12,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:43:12,391 INFO L225 Difference]: With dead ends: 102 [2022-12-14 12:43:12,391 INFO L226 Difference]: Without dead ends: 60 [2022-12-14 12:43:12,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:43:12,392 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 16 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 12:43:12,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 143 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 12:43:12,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-12-14 12:43:12,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2022-12-14 12:43:12,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 12:43:12,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 71 transitions. [2022-12-14 12:43:12,404 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 71 transitions. Word has length 42 [2022-12-14 12:43:12,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:43:12,404 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 71 transitions. [2022-12-14 12:43:12,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 12:43:12,405 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 71 transitions. [2022-12-14 12:43:12,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-14 12:43:12,405 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:43:12,406 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:43:12,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-14 12:43:12,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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 [2022-12-14 12:43:12,608 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:43:12,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:43:12,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1744233432, now seen corresponding path program 1 times [2022-12-14 12:43:12,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:43:12,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209219557] [2022-12-14 12:43:12,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:12,612 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 [2022-12-14 12:43:12,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:43:12,615 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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) [2022-12-14 12:43:12,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-14 12:43:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:12,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:43:12,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:43:12,844 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:43:12,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:43:12,845 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:43:12,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209219557] [2022-12-14 12:43:12,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209219557] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:43:12,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:43:12,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 12:43:12,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152787131] [2022-12-14 12:43:12,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:43:12,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:43:12,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:43:12,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:43:12,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:43:12,848 INFO L87 Difference]: Start difference. First operand 51 states and 71 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 12:43:13,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:43:13,147 INFO L93 Difference]: Finished difference Result 106 states and 151 transitions. [2022-12-14 12:43:13,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 12:43:13,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 45 [2022-12-14 12:43:13,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:43:13,149 INFO L225 Difference]: With dead ends: 106 [2022-12-14 12:43:13,149 INFO L226 Difference]: Without dead ends: 63 [2022-12-14 12:43:13,150 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 [2022-12-14 12:43:13,151 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 10 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:43:13,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 157 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 12:43:13,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-12-14 12:43:13,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2022-12-14 12:43:13,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 48 states have internal predecessors, (65), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-14 12:43:13,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2022-12-14 12:43:13,162 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 45 [2022-12-14 12:43:13,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:43:13,163 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2022-12-14 12:43:13,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 12:43:13,163 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2022-12-14 12:43:13,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-14 12:43:13,165 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:43:13,165 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:43:13,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-12-14 12:43:13,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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 [2022-12-14 12:43:13,367 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:43:13,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:43:13,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1089123319, now seen corresponding path program 1 times [2022-12-14 12:43:13,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:43:13,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1299913602] [2022-12-14 12:43:13,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:13,372 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 [2022-12-14 12:43:13,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:43:13,375 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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) [2022-12-14 12:43:13,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 12:43:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:13,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:43:13,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:43:13,602 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:43:13,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:43:13,602 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:43:13,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1299913602] [2022-12-14 12:43:13,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1299913602] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:43:13,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:43:13,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 12:43:13,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808051294] [2022-12-14 12:43:13,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:43:13,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:43:13,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:43:13,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:43:13,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:43:13,604 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 12:43:13,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:43:13,972 INFO L93 Difference]: Finished difference Result 115 states and 163 transitions. [2022-12-14 12:43:13,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:43:13,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-12-14 12:43:13,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:43:13,974 INFO L225 Difference]: With dead ends: 115 [2022-12-14 12:43:13,974 INFO L226 Difference]: Without dead ends: 67 [2022-12-14 12:43:13,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:43:13,975 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 17 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 12:43:13,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 150 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 12:43:13,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-12-14 12:43:13,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 57. [2022-12-14 12:43:13,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.375) internal successors, (66), 49 states have internal predecessors, (66), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-14 12:43:13,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 79 transitions. [2022-12-14 12:43:13,983 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 79 transitions. Word has length 46 [2022-12-14 12:43:13,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:43:13,984 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 79 transitions. [2022-12-14 12:43:13,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 12:43:13,984 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 79 transitions. [2022-12-14 12:43:13,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-12-14 12:43:13,985 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:43:13,985 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:43:13,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-14 12:43:14,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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 [2022-12-14 12:43:14,186 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:43:14,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:43:14,188 INFO L85 PathProgramCache]: Analyzing trace with hash 957340839, now seen corresponding path program 1 times [2022-12-14 12:43:14,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:43:14,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305027896] [2022-12-14 12:43:14,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:14,189 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 [2022-12-14 12:43:14,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:43:14,192 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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) [2022-12-14 12:43:14,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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 [2022-12-14 12:43:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:14,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 12:43:14,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:43:14,484 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:43:14,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:43:14,484 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:43:14,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305027896] [2022-12-14 12:43:14,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305027896] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:43:14,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:43:14,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 12:43:14,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273254445] [2022-12-14 12:43:14,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:43:14,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:43:14,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:43:14,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:43:14,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:43:14,486 INFO L87 Difference]: Start difference. First operand 57 states and 79 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 12:43:15,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:43:15,082 INFO L93 Difference]: Finished difference Result 123 states and 174 transitions. [2022-12-14 12:43:15,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 12:43:15,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2022-12-14 12:43:15,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:43:15,084 INFO L225 Difference]: With dead ends: 123 [2022-12-14 12:43:15,084 INFO L226 Difference]: Without dead ends: 74 [2022-12-14 12:43:15,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 12:43:15,085 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 19 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 12:43:15,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 198 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 12:43:15,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-12-14 12:43:15,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 58. [2022-12-14 12:43:15,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 50 states have internal predecessors, (68), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-14 12:43:15,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 81 transitions. [2022-12-14 12:43:15,094 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 81 transitions. Word has length 47 [2022-12-14 12:43:15,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:43:15,095 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 81 transitions. [2022-12-14 12:43:15,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 12:43:15,095 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 81 transitions. [2022-12-14 12:43:15,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-14 12:43:15,096 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:43:15,096 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:43:15,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 12:43:15,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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 [2022-12-14 12:43:15,298 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:43:15,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:43:15,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1066513524, now seen corresponding path program 1 times [2022-12-14 12:43:15,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:43:15,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1316345278] [2022-12-14 12:43:15,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:15,301 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 [2022-12-14 12:43:15,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:43:15,303 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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) [2022-12-14 12:43:15,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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 [2022-12-14 12:43:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:15,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 12:43:15,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:43:15,631 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:43:15,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:43:16,181 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 12:43:16,181 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:43:16,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1316345278] [2022-12-14 12:43:16,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1316345278] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:43:16,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2069106242] [2022-12-14 12:43:16,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:16,182 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:43:16,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:43:16,183 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:43:16,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-12-14 12:43:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:16,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 12:43:16,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:43:16,318 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-14 12:43:16,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:43:16,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2069106242] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:43:16,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 12:43:16,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-12-14 12:43:16,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814812517] [2022-12-14 12:43:16,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:43:16,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:43:16,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:43:16,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:43:16,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 12:43:16,320 INFO L87 Difference]: Start difference. First operand 58 states and 81 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 12:43:16,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:43:16,343 INFO L93 Difference]: Finished difference Result 67 states and 91 transitions. [2022-12-14 12:43:16,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:43:16,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 48 [2022-12-14 12:43:16,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:43:16,345 INFO L225 Difference]: With dead ends: 67 [2022-12-14 12:43:16,345 INFO L226 Difference]: Without dead ends: 58 [2022-12-14 12:43:16,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 12:43:16,347 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:43:16,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:43:16,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-12-14 12:43:16,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-12-14 12:43:16,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 50 states have internal predecessors, (67), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-14 12:43:16,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 80 transitions. [2022-12-14 12:43:16,356 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 80 transitions. Word has length 48 [2022-12-14 12:43:16,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:43:16,357 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 80 transitions. [2022-12-14 12:43:16,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 12:43:16,357 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 80 transitions. [2022-12-14 12:43:16,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 12:43:16,358 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:43:16,358 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:43:16,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2022-12-14 12:43:16,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 12:43:16,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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 [2022-12-14 12:43:16,761 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:43:16,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:43:16,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1967363502, now seen corresponding path program 1 times [2022-12-14 12:43:16,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:43:16,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22080104] [2022-12-14 12:43:16,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:16,764 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 [2022-12-14 12:43:16,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:43:16,767 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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) [2022-12-14 12:43:16,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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 [2022-12-14 12:43:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:16,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 12:43:16,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:43:17,103 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:43:17,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:43:17,622 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 12:43:17,623 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:43:17,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22080104] [2022-12-14 12:43:17,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22080104] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:43:17,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2146511137] [2022-12-14 12:43:17,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:17,623 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:43:17,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:43:17,624 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:43:17,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-12-14 12:43:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:17,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 12:43:17,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:43:17,842 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-14 12:43:17,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:43:17,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2146511137] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:43:17,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 12:43:17,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-12-14 12:43:17,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805644876] [2022-12-14 12:43:17,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:43:17,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:43:17,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:43:17,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:43:17,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-14 12:43:17,844 INFO L87 Difference]: Start difference. First operand 58 states and 80 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 12:43:17,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:43:17,970 INFO L93 Difference]: Finished difference Result 68 states and 91 transitions. [2022-12-14 12:43:17,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 12:43:17,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 50 [2022-12-14 12:43:17,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:43:17,972 INFO L225 Difference]: With dead ends: 68 [2022-12-14 12:43:17,972 INFO L226 Difference]: Without dead ends: 58 [2022-12-14 12:43:17,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-12-14 12:43:17,973 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 1 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:43:17,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 184 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:43:17,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-12-14 12:43:17,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-12-14 12:43:17,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.346938775510204) internal successors, (66), 50 states have internal predecessors, (66), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-14 12:43:17,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 79 transitions. [2022-12-14 12:43:17,980 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 79 transitions. Word has length 50 [2022-12-14 12:43:17,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:43:17,981 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 79 transitions. [2022-12-14 12:43:17,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 12:43:17,981 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 79 transitions. [2022-12-14 12:43:17,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 12:43:17,982 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:43:17,982 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:43:17,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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 [2022-12-14 12:43:18,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2022-12-14 12:43:18,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 12:43:18,384 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:43:18,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:43:18,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1518257168, now seen corresponding path program 1 times [2022-12-14 12:43:18,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:43:18,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887142420] [2022-12-14 12:43:18,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:18,388 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 [2022-12-14 12:43:18,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:43:18,389 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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) [2022-12-14 12:43:18,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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 [2022-12-14 12:43:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:18,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 12:43:18,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:43:18,676 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:43:18,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:43:19,195 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 12:43:19,195 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:43:19,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887142420] [2022-12-14 12:43:19,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [887142420] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:43:19,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1959891499] [2022-12-14 12:43:19,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:19,196 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:43:19,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:43:19,197 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:43:19,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-12-14 12:43:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:19,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 12:43:19,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:43:19,746 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-14 12:43:19,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:43:19,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1959891499] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:43:19,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 12:43:19,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 5] total 12 [2022-12-14 12:43:19,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682939481] [2022-12-14 12:43:19,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:43:19,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 12:43:19,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:43:19,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 12:43:19,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-12-14 12:43:19,749 INFO L87 Difference]: Start difference. First operand 58 states and 79 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 12:43:20,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:43:20,028 INFO L93 Difference]: Finished difference Result 98 states and 133 transitions. [2022-12-14 12:43:20,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 12:43:20,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 50 [2022-12-14 12:43:20,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:43:20,029 INFO L225 Difference]: With dead ends: 98 [2022-12-14 12:43:20,030 INFO L226 Difference]: Without dead ends: 77 [2022-12-14 12:43:20,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-12-14 12:43:20,031 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 15 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:43:20,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 283 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 12:43:20,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-12-14 12:43:20,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 67. [2022-12-14 12:43:20,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 58 states have internal predecessors, (73), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-14 12:43:20,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 91 transitions. [2022-12-14 12:43:20,042 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 91 transitions. Word has length 50 [2022-12-14 12:43:20,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:43:20,042 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 91 transitions. [2022-12-14 12:43:20,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 12:43:20,043 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 91 transitions. [2022-12-14 12:43:20,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 12:43:20,044 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:43:20,044 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:43:20,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 12:43:20,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-12-14 12:43:20,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 12:43:20,445 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:43:20,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:43:20,447 INFO L85 PathProgramCache]: Analyzing trace with hash 931451154, now seen corresponding path program 1 times [2022-12-14 12:43:20,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:43:20,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157122635] [2022-12-14 12:43:20,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:20,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:43:20,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:43:20,451 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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) [2022-12-14 12:43:20,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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 [2022-12-14 12:43:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:20,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 12:43:20,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:43:20,733 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:43:20,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:43:21,295 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 12:43:21,295 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:43:21,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157122635] [2022-12-14 12:43:21,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157122635] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:43:21,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1323701411] [2022-12-14 12:43:21,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:21,296 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:43:21,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:43:21,297 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:43:21,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-12-14 12:43:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:21,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 12:43:21,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:43:21,843 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-14 12:43:21,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:43:22,140 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-14 12:43:22,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1323701411] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:43:22,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913160721] [2022-12-14 12:43:22,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:22,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:43:22,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:43:22,142 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:43:22,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 12:43:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:22,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 12:43:22,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:43:22,309 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:43:22,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:43:22,616 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 12:43:22,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913160721] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:43:22,616 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 12:43:22,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6, 6, 5, 5] total 12 [2022-12-14 12:43:22,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710875367] [2022-12-14 12:43:22,617 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 12:43:22,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 12:43:22,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:43:22,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 12:43:22,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-12-14 12:43:22,618 INFO L87 Difference]: Start difference. First operand 67 states and 91 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-14 12:43:25,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:43:25,172 INFO L93 Difference]: Finished difference Result 186 states and 270 transitions. [2022-12-14 12:43:25,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 12:43:25,173 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 50 [2022-12-14 12:43:25,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:43:25,175 INFO L225 Difference]: With dead ends: 186 [2022-12-14 12:43:25,175 INFO L226 Difference]: Without dead ends: 127 [2022-12-14 12:43:25,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2022-12-14 12:43:25,176 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 78 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 12:43:25,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 388 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 12:43:25,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-12-14 12:43:25,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 96. [2022-12-14 12:43:25,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 84 states have (on average 1.3452380952380953) internal successors, (113), 84 states have internal predecessors, (113), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 8 states have call predecessors, (18), 5 states have call successors, (18) [2022-12-14 12:43:25,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 137 transitions. [2022-12-14 12:43:25,196 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 137 transitions. Word has length 50 [2022-12-14 12:43:25,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:43:25,196 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 137 transitions. [2022-12-14 12:43:25,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-14 12:43:25,197 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 137 transitions. [2022-12-14 12:43:25,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 12:43:25,198 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:43:25,198 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:43:25,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2022-12-14 12:43:25,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-14 12:43:25,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 12:43:25,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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 [2022-12-14 12:43:25,800 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:43:25,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:43:25,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1265138967, now seen corresponding path program 1 times [2022-12-14 12:43:25,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:43:25,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1831086978] [2022-12-14 12:43:25,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:25,803 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 [2022-12-14 12:43:25,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:43:25,806 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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) [2022-12-14 12:43:25,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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 [2022-12-14 12:43:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:25,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 12:43:25,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:43:26,152 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:43:26,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:43:26,858 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 12:43:26,858 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:43:26,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1831086978] [2022-12-14 12:43:26,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1831086978] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:43:26,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1824641279] [2022-12-14 12:43:26,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:26,858 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:43:26,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:43:26,863 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:43:26,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-12-14 12:43:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:26,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 12:43:26,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:43:27,278 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-14 12:43:27,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:43:27,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1824641279] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:43:27,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 12:43:27,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-12-14 12:43:27,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099774116] [2022-12-14 12:43:27,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:43:27,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:43:27,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:43:27,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:43:27,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-12-14 12:43:27,282 INFO L87 Difference]: Start difference. First operand 96 states and 137 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 12:43:27,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:43:27,590 INFO L93 Difference]: Finished difference Result 119 states and 161 transitions. [2022-12-14 12:43:27,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:43:27,591 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 54 [2022-12-14 12:43:27,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:43:27,592 INFO L225 Difference]: With dead ends: 119 [2022-12-14 12:43:27,592 INFO L226 Difference]: Without dead ends: 113 [2022-12-14 12:43:27,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-12-14 12:43:27,593 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 22 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:43:27,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 229 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:43:27,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-12-14 12:43:27,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2022-12-14 12:43:27,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 99 states have (on average 1.303030303030303) internal successors, (129), 99 states have internal predecessors, (129), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 8 states have call predecessors, (18), 5 states have call successors, (18) [2022-12-14 12:43:27,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 153 transitions. [2022-12-14 12:43:27,602 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 153 transitions. Word has length 54 [2022-12-14 12:43:27,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:43:27,602 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 153 transitions. [2022-12-14 12:43:27,602 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 12:43:27,602 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 153 transitions. [2022-12-14 12:43:27,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 12:43:27,603 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:43:27,603 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:43:27,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2022-12-14 12:43:27,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 12:43:28,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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 [2022-12-14 12:43:28,005 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:43:28,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:43:28,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1322397269, now seen corresponding path program 1 times [2022-12-14 12:43:28,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:43:28,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200158371] [2022-12-14 12:43:28,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:28,008 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 [2022-12-14 12:43:28,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:43:28,011 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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) [2022-12-14 12:43:28,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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 [2022-12-14 12:43:28,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:28,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 12:43:28,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:43:28,406 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:43:28,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:43:29,073 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 12:43:29,074 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:43:29,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200158371] [2022-12-14 12:43:29,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [200158371] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:43:29,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1345678644] [2022-12-14 12:43:29,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:29,074 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:43:29,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:43:29,075 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:43:29,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-12-14 12:43:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:29,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 12:43:29,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:43:29,270 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:43:29,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:43:29,577 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 12:43:29,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1345678644] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:43:29,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729675472] [2022-12-14 12:43:29,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:29,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:43:29,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:43:29,579 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:43:29,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-14 12:43:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:29,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 12:43:29,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:43:30,353 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 12:43:30,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:43:30,835 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-14 12:43:30,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729675472] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 12:43:30,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2022-12-14 12:43:30,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6, 6, 6, 8] total 17 [2022-12-14 12:43:30,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944522502] [2022-12-14 12:43:30,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:43:30,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 12:43:30,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:43:30,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 12:43:30,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-12-14 12:43:30,839 INFO L87 Difference]: Start difference. First operand 111 states and 153 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 12:43:31,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:43:31,245 INFO L93 Difference]: Finished difference Result 117 states and 158 transitions. [2022-12-14 12:43:31,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 12:43:31,246 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 54 [2022-12-14 12:43:31,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:43:31,248 INFO L225 Difference]: With dead ends: 117 [2022-12-14 12:43:31,248 INFO L226 Difference]: Without dead ends: 100 [2022-12-14 12:43:31,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-12-14 12:43:31,249 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 2 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:43:31,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 295 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:43:31,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-12-14 12:43:31,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-12-14 12:43:31,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 88 states have (on average 1.2954545454545454) internal successors, (114), 89 states have internal predecessors, (114), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2022-12-14 12:43:31,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 135 transitions. [2022-12-14 12:43:31,258 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 135 transitions. Word has length 54 [2022-12-14 12:43:31,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:43:31,258 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 135 transitions. [2022-12-14 12:43:31,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 12:43:31,259 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 135 transitions. [2022-12-14 12:43:31,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 12:43:31,259 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:43:31,259 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1] [2022-12-14 12:43:31,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2022-12-14 12:43:31,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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 [2022-12-14 12:43:31,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-12-14 12:43:31,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:43:31,861 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:43:31,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:43:31,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1182884870, now seen corresponding path program 1 times [2022-12-14 12:43:31,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:43:31,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995341974] [2022-12-14 12:43:31,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:31,862 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 [2022-12-14 12:43:31,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:43:31,864 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/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) [2022-12-14 12:43:31,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-12-14 12:43:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:31,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 12:43:31,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:43:32,230 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:43:32,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:43:32,930 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 12:43:32,931 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:43:32,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995341974] [2022-12-14 12:43:32,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995341974] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:43:32,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [249436428] [2022-12-14 12:43:32,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:32,931 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:43:32,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:43:32,932 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:43:32,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-12-14 12:43:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:33,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 12:43:33,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:43:33,154 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:43:33,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:43:33,473 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 12:43:33,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [249436428] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:43:33,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778807596] [2022-12-14 12:43:33,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:33,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:43:33,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:43:33,474 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:43:33,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6108178-2ef1-4ad9-ba64-a1d8a4cc56bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-14 12:43:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:33,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 12:43:33,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:43:34,029 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:43:34,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:43:34,744 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 12:43:34,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778807596] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:43:34,745 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 12:43:34,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 7] total 15 [2022-12-14 12:43:34,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950152046] [2022-12-14 12:43:34,746 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 12:43:34,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 12:43:34,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:43:34,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 12:43:34,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-12-14 12:43:34,748 INFO L87 Difference]: Start difference. First operand 100 states and 135 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8)