./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-32.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-32.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --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 3d2cf0a7074bcf0b96169875d5770b78078c347fd202e9f8698bc98c30c1867a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:58:31,951 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:58:32,014 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 18:58:32,019 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:58:32,019 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:58:32,042 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:58:32,043 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:58:32,043 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:58:32,044 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:58:32,044 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:58:32,045 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:58:32,045 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:58:32,046 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:58:32,046 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:58:32,047 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:58:32,047 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:58:32,048 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:58:32,048 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:58:32,049 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:58:32,049 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:58:32,050 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:58:32,050 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:58:32,051 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:58:32,051 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:58:32,052 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:58:32,052 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:58:32,052 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:58:32,053 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:58:32,053 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:58:32,053 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:58:32,062 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:58:32,063 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:58:32,063 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:58:32,064 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:58:32,064 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:58:32,064 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:58:32,064 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:58:32,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:58:32,065 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:58:32,065 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:58:32,065 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:58:32,066 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:58:32,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:58:32,066 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:58:32,066 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:58:32,067 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:58:32,067 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:58:32,067 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d2cf0a7074bcf0b96169875d5770b78078c347fd202e9f8698bc98c30c1867a [2023-12-02 18:58:32,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:58:32,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:58:32,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:58:32,298 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:58:32,299 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:58:32,300 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-32.i [2023-12-02 18:58:35,023 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:58:35,232 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:58:35,233 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-32.i [2023-12-02 18:58:35,242 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/data/92203efc1/3bb277c4ebdf490caa6acad67c301253/FLAGb3b781406 [2023-12-02 18:58:35,256 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/data/92203efc1/3bb277c4ebdf490caa6acad67c301253 [2023-12-02 18:58:35,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:58:35,260 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:58:35,261 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:58:35,262 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:58:35,266 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:58:35,267 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:58:35" (1/1) ... [2023-12-02 18:58:35,268 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63208382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:35, skipping insertion in model container [2023-12-02 18:58:35,269 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:58:35" (1/1) ... [2023-12-02 18:58:35,303 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:58:35,450 WARN L240 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_39433b88-81ff-44bc-ab7f-78ed7239bca3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-32.i[915,928] [2023-12-02 18:58:35,502 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:58:35,514 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:58:35,527 WARN L240 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_39433b88-81ff-44bc-ab7f-78ed7239bca3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-32.i[915,928] [2023-12-02 18:58:35,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:58:35,571 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:58:35,572 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:35 WrapperNode [2023-12-02 18:58:35,572 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:58:35,573 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:58:35,573 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:58:35,573 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:58:35,580 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:35" (1/1) ... [2023-12-02 18:58:35,592 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:35" (1/1) ... [2023-12-02 18:58:35,624 INFO L138 Inliner]: procedures = 26, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 145 [2023-12-02 18:58:35,624 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:58:35,625 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:58:35,625 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:58:35,625 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:58:35,635 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:35" (1/1) ... [2023-12-02 18:58:35,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:35" (1/1) ... [2023-12-02 18:58:35,638 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:35" (1/1) ... [2023-12-02 18:58:35,639 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:35" (1/1) ... [2023-12-02 18:58:35,648 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:35" (1/1) ... [2023-12-02 18:58:35,652 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:35" (1/1) ... [2023-12-02 18:58:35,654 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:35" (1/1) ... [2023-12-02 18:58:35,656 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:35" (1/1) ... [2023-12-02 18:58:35,660 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:58:35,661 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:58:35,661 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:58:35,661 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:58:35,662 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:35" (1/1) ... [2023-12-02 18:58:35,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:58:35,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:58:35,693 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:58:35,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:58:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:58:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 18:58:35,725 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 18:58:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:58:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:58:35,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:58:35,801 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:58:35,803 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:58:36,075 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:58:36,261 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:58:36,261 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 18:58:36,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:58:36 BoogieIcfgContainer [2023-12-02 18:58:36,263 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:58:36,266 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:58:36,266 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:58:36,269 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:58:36,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:58:35" (1/3) ... [2023-12-02 18:58:36,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683e43ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:58:36, skipping insertion in model container [2023-12-02 18:58:36,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:35" (2/3) ... [2023-12-02 18:58:36,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683e43ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:58:36, skipping insertion in model container [2023-12-02 18:58:36,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:58:36" (3/3) ... [2023-12-02 18:58:36,272 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-1loop_file-32.i [2023-12-02 18:58:36,292 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:58:36,292 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 18:58:36,339 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:58:36,345 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=LoopHeads, 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;@57326a4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:58:36,345 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 18:58:36,348 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 18:58:36,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-02 18:58:36,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:58:36,358 INFO L195 NwaCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:58:36,359 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:58:36,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:58:36,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1100973391, now seen corresponding path program 1 times [2023-12-02 18:58:36,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:58:36,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233958218] [2023-12-02 18:58:36,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:58:36,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:58:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 18:58:36,689 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 18:58:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 18:58:36,848 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 18:58:36,849 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 18:58:36,850 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 18:58:36,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 18:58:36,855 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 18:58:36,859 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 18:58:36,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:58:36 BoogieIcfgContainer [2023-12-02 18:58:36,936 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 18:58:36,937 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 18:58:36,937 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 18:58:36,937 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 18:58:36,937 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:58:36" (3/4) ... [2023-12-02 18:58:36,939 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 18:58:36,941 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 18:58:36,942 INFO L158 Benchmark]: Toolchain (without parser) took 1681.35ms. Allocated memory was 138.4MB in the beginning and 176.2MB in the end (delta: 37.7MB). Free memory was 105.7MB in the beginning and 93.8MB in the end (delta: 11.9MB). Peak memory consumption was 52.2MB. Max. memory is 16.1GB. [2023-12-02 18:58:36,942 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 138.4MB. Free memory is still 107.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:58:36,943 INFO L158 Benchmark]: CACSL2BoogieTranslator took 311.05ms. Allocated memory is still 138.4MB. Free memory was 105.3MB in the beginning and 92.0MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 18:58:36,944 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.29ms. Allocated memory is still 138.4MB. Free memory was 91.6MB in the beginning and 88.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 18:58:36,944 INFO L158 Benchmark]: Boogie Preprocessor took 35.35ms. Allocated memory is still 138.4MB. Free memory was 88.6MB in the beginning and 86.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 18:58:36,945 INFO L158 Benchmark]: RCFGBuilder took 601.84ms. Allocated memory was 138.4MB in the beginning and 176.2MB in the end (delta: 37.7MB). Free memory was 86.5MB in the beginning and 142.1MB in the end (delta: -55.5MB). Peak memory consumption was 43.8MB. Max. memory is 16.1GB. [2023-12-02 18:58:36,946 INFO L158 Benchmark]: TraceAbstraction took 670.15ms. Allocated memory is still 176.2MB. Free memory was 141.1MB in the beginning and 94.8MB in the end (delta: 46.4MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2023-12-02 18:58:36,946 INFO L158 Benchmark]: Witness Printer took 4.12ms. Allocated memory is still 176.2MB. Free memory was 94.8MB in the beginning and 93.8MB in the end (delta: 933.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 18:58:36,949 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 138.4MB. Free memory is still 107.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 311.05ms. Allocated memory is still 138.4MB. Free memory was 105.3MB in the beginning and 92.0MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.29ms. Allocated memory is still 138.4MB. Free memory was 91.6MB in the beginning and 88.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.35ms. Allocated memory is still 138.4MB. Free memory was 88.6MB in the beginning and 86.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 601.84ms. Allocated memory was 138.4MB in the beginning and 176.2MB in the end (delta: 37.7MB). Free memory was 86.5MB in the beginning and 142.1MB in the end (delta: -55.5MB). Peak memory consumption was 43.8MB. Max. memory is 16.1GB. * TraceAbstraction took 670.15ms. Allocated memory is still 176.2MB. Free memory was 141.1MB in the beginning and 94.8MB in the end (delta: 46.4MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * Witness Printer took 4.12ms. Allocated memory is still 176.2MB. Free memory was 94.8MB in the beginning and 93.8MB in the end (delta: 933.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 68, overapproximation of someBinaryDOUBLEComparisonOperation at line 130, overapproximation of someBinaryArithmeticFLOAToperation at line 63. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 2; [L23] unsigned char var_1_4 = 100; [L24] unsigned char var_1_5 = 2; [L25] unsigned char var_1_6 = 64; [L26] unsigned char var_1_7 = 32; [L27] unsigned char var_1_8 = 32; [L28] float var_1_9 = 100.5; [L29] float var_1_11 = 0.8; [L30] float var_1_12 = 2.5; [L31] signed short int var_1_13 = -32; [L32] unsigned char var_1_15 = 1; [L33] unsigned char var_1_16 = 0; [L34] unsigned char var_1_17 = 0; [L35] float var_1_18 = 0.25; [L36] float var_1_19 = 100000000.25; [L37] signed char var_1_20 = 0; [L38] signed char var_1_21 = 10; [L39] double var_1_22 = 1000000.5; [L40] unsigned long int var_1_23 = 256; [L41] unsigned long int var_1_24 = 50; [L42] unsigned char last_1_var_1_1 = 2; [L43] unsigned char last_1_var_1_15 = 1; [L44] signed char last_1_var_1_20 = 0; [L134] isInitial = 1 [L135] FCALL initially() [L136] int k_loop; [L137] k_loop = 0 VAL [isInitial=1, k_loop=0, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_11=4/5, var_1_12=5/2, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=100, var_1_5=2, var_1_6=64, var_1_7=32, var_1_8=32, var_1_9=201/2] [L137] COND TRUE k_loop < 1 [L138] CALL updateLastVariables() [L125] last_1_var_1_1 = var_1_1 [L126] last_1_var_1_15 = var_1_15 [L127] last_1_var_1_20 = var_1_20 [L138] RET updateLastVariables() [L139] CALL updateVariables() [L93] var_1_4 = __VERIFIER_nondet_uchar() [L94] CALL assume_abort_if_not(var_1_4 >= 95) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_11=4/5, var_1_12=5/2, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=2, var_1_6=64, var_1_7=32, var_1_8=32, var_1_9=201/2] [L20] COND FALSE !(!cond) [L94] RET assume_abort_if_not(var_1_4 >= 95) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_11=4/5, var_1_12=5/2, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=2, var_1_6=64, var_1_7=32, var_1_8=32, var_1_9=201/2] [L95] CALL assume_abort_if_not(var_1_4 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_11=4/5, var_1_12=5/2, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=2, var_1_6=64, var_1_7=32, var_1_8=32, var_1_9=201/2] [L20] COND FALSE !(!cond) [L95] RET assume_abort_if_not(var_1_4 <= 127) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_11=4/5, var_1_12=5/2, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=2, var_1_6=64, var_1_7=32, var_1_8=32, var_1_9=201/2] [L96] var_1_5 = __VERIFIER_nondet_uchar() [L97] CALL assume_abort_if_not(var_1_5 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_11=4/5, var_1_12=5/2, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_6=64, var_1_7=32, var_1_8=32, var_1_9=201/2] [L20] COND FALSE !(!cond) [L97] RET assume_abort_if_not(var_1_5 >= 0) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_11=4/5, var_1_12=5/2, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_6=64, var_1_7=32, var_1_8=32, var_1_9=201/2] [L98] CALL assume_abort_if_not(var_1_5 <= 32) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_11=4/5, var_1_12=5/2, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=32, var_1_8=32, var_1_9=201/2] [L20] COND FALSE !(!cond) [L98] RET assume_abort_if_not(var_1_5 <= 32) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_11=4/5, var_1_12=5/2, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=32, var_1_8=32, var_1_9=201/2] [L99] var_1_6 = __VERIFIER_nondet_uchar() [L100] CALL assume_abort_if_not(var_1_6 >= 64) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_11=4/5, var_1_12=5/2, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=32, var_1_8=32, var_1_9=201/2] [L20] COND FALSE !(!cond) [L100] RET assume_abort_if_not(var_1_6 >= 64) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_11=4/5, var_1_12=5/2, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=32, var_1_8=32, var_1_9=201/2] [L101] CALL assume_abort_if_not(var_1_6 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_11=4/5, var_1_12=5/2, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=32, var_1_8=32, var_1_9=201/2] [L20] COND FALSE !(!cond) [L101] RET assume_abort_if_not(var_1_6 <= 127) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_11=4/5, var_1_12=5/2, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=32, var_1_8=32, var_1_9=201/2] [L102] var_1_7 = __VERIFIER_nondet_uchar() [L103] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_11=4/5, var_1_12=5/2, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_8=32, var_1_9=201/2] [L20] COND FALSE !(!cond) [L103] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_11=4/5, var_1_12=5/2, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_8=32, var_1_9=201/2] [L104] CALL assume_abort_if_not(var_1_7 <= 64) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_11=4/5, var_1_12=5/2, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=64, var_1_8=32, var_1_9=201/2] [L20] COND FALSE !(!cond) [L104] RET assume_abort_if_not(var_1_7 <= 64) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_11=4/5, var_1_12=5/2, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=64, var_1_8=32, var_1_9=201/2] [L105] var_1_8 = __VERIFIER_nondet_uchar() [L106] CALL assume_abort_if_not(var_1_8 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_11=4/5, var_1_12=5/2, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=64, var_1_9=201/2] [L20] COND FALSE !(!cond) [L106] RET assume_abort_if_not(var_1_8 >= 0) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_11=4/5, var_1_12=5/2, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=64, var_1_9=201/2] [L107] CALL assume_abort_if_not(var_1_8 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_11=4/5, var_1_12=5/2, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=64, var_1_8=0, var_1_9=201/2] [L20] COND FALSE !(!cond) [L107] RET assume_abort_if_not(var_1_8 <= 63) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_11=4/5, var_1_12=5/2, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=64, var_1_8=0, var_1_9=201/2] [L108] var_1_11 = __VERIFIER_nondet_float() [L109] CALL assume_abort_if_not((var_1_11 >= 0.0F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 4611686.018427382800e+12F && var_1_11 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_12=5/2, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=64, var_1_8=0, var_1_9=201/2] [L20] COND FALSE !(!cond) [L109] RET assume_abort_if_not((var_1_11 >= 0.0F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 4611686.018427382800e+12F && var_1_11 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_12=5/2, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=64, var_1_8=0, var_1_9=201/2] [L110] var_1_12 = __VERIFIER_nondet_float() [L111] CALL assume_abort_if_not((var_1_12 >= 0.0F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 9223372.036854765600e+12F && var_1_12 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=64, var_1_8=0, var_1_9=201/2] [L20] COND FALSE !(!cond) [L111] RET assume_abort_if_not((var_1_12 >= 0.0F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 9223372.036854765600e+12F && var_1_12 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=64, var_1_8=0, var_1_9=201/2] [L112] var_1_16 = __VERIFIER_nondet_uchar() [L113] CALL assume_abort_if_not(var_1_16 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_13=-32, var_1_15=1, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=64, var_1_8=0, var_1_9=201/2] [L20] COND FALSE !(!cond) [L113] RET assume_abort_if_not(var_1_16 >= 0) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_13=-32, var_1_15=1, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=64, var_1_8=0, var_1_9=201/2] [L114] CALL assume_abort_if_not(var_1_16 <= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=64, var_1_8=0, var_1_9=201/2] [L20] COND FALSE !(!cond) [L114] RET assume_abort_if_not(var_1_16 <= 0) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=0, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=64, var_1_8=0, var_1_9=201/2] [L115] var_1_17 = __VERIFIER_nondet_uchar() [L116] CALL assume_abort_if_not(var_1_17 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=64, var_1_8=0, var_1_9=201/2] [L20] COND FALSE !(!cond) [L116] RET assume_abort_if_not(var_1_17 >= 1) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=64, var_1_8=0, var_1_9=201/2] [L117] CALL assume_abort_if_not(var_1_17 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=64, var_1_8=0, var_1_9=201/2] [L20] COND FALSE !(!cond) [L117] RET assume_abort_if_not(var_1_17 <= 1) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=1/4, var_1_19=400000001/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=64, var_1_8=0, var_1_9=201/2] [L118] var_1_19 = __VERIFIER_nondet_float() [L119] CALL assume_abort_if_not((var_1_19 >= -461168.6018427382800e+13F && var_1_19 <= -1.0e-20F) || (var_1_19 <= 4611686.018427382800e+12F && var_1_19 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=1/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=64, var_1_8=0, var_1_9=201/2] [L20] COND FALSE !(!cond) [L119] RET assume_abort_if_not((var_1_19 >= -461168.6018427382800e+13F && var_1_19 <= -1.0e-20F) || (var_1_19 <= 4611686.018427382800e+12F && var_1_19 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=1/4, var_1_1=2, var_1_20=0, var_1_21=10, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=64, var_1_8=0, var_1_9=201/2] [L120] var_1_21 = __VERIFIER_nondet_char() [L121] CALL assume_abort_if_not(var_1_21 >= -31) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=1/4, var_1_1=2, var_1_20=0, var_1_21=-31, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=64, var_1_8=0, var_1_9=201/2] [L20] COND FALSE !(!cond) [L121] RET assume_abort_if_not(var_1_21 >= -31) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=1/4, var_1_1=2, var_1_20=0, var_1_21=-31, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=64, var_1_8=0, var_1_9=201/2] [L122] CALL assume_abort_if_not(var_1_21 <= 31) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=1/4, var_1_1=2, var_1_20=0, var_1_21=-31, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=64, var_1_8=0, var_1_9=201/2] [L20] COND FALSE !(!cond) [L122] RET assume_abort_if_not(var_1_21 <= 31) VAL [isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=1/4, var_1_1=2, var_1_20=0, var_1_21=-31, var_1_22=2000001/2, var_1_23=256, var_1_24=50, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=64, var_1_8=0, var_1_9=201/2] [L139] RET updateVariables() [L140] CALL step() [L48] COND FALSE !(var_1_5 >= var_1_6) [L57] var_1_15 = var_1_17 [L59] unsigned char stepLocal_1 = var_1_15; [L60] unsigned char stepLocal_0 = var_1_15; [L61] COND TRUE var_1_17 || stepLocal_0 [L62] COND TRUE var_1_15 && stepLocal_1 [L63] var_1_18 = (var_1_11 + var_1_19) [L68] COND FALSE !((var_1_12 * ((((var_1_18) < (var_1_11)) ? (var_1_18) : (var_1_11)))) > (- var_1_18)) [L77] COND TRUE var_1_11 == var_1_18 [L78] var_1_20 = ((var_1_5 + var_1_21) + var_1_8) [L80] COND FALSE !(-32 < var_1_13) [L83] COND FALSE !((var_1_13 + ((((var_1_13) > (var_1_6)) ? (var_1_13) : (var_1_6)))) == var_1_5) [L86] var_1_9 = var_1_12 [L88] var_1_22 = var_1_12 [L89] var_1_23 = var_1_8 [L90] var_1_24 = var_1_6 [L140] RET step() [L141] CALL, EXPR property() [L130-L131] return (((((((((-32 < var_1_13) ? (var_1_1 == ((unsigned char) (((var_1_4 - var_1_5) + var_1_6) - (var_1_7 + ((((var_1_8) < 0 ) ? -(var_1_8) : (var_1_8))))))) : 1) && (((var_1_13 + ((((var_1_13) > (var_1_6)) ? (var_1_13) : (var_1_6)))) == var_1_5) ? (var_1_9 == ((float) ((4.5f + var_1_11) - var_1_12))) : (var_1_9 == ((float) var_1_12)))) && (((var_1_12 * ((((var_1_18) < (var_1_11)) ? (var_1_18) : (var_1_11)))) > (- var_1_18)) ? ((var_1_6 <= var_1_8) ? (var_1_15 ? (var_1_13 == ((signed short int) var_1_8)) : (var_1_13 == ((signed short int) var_1_5))) : 1) : 1)) && ((var_1_5 >= var_1_6) ? ((last_1_var_1_1 <= last_1_var_1_20) ? (var_1_15 == ((unsigned char) var_1_16)) : ((last_1_var_1_15 || var_1_16) ? (var_1_15 == ((unsigned char) var_1_17)) : 1)) : (var_1_15 == ((unsigned char) var_1_17)))) && ((var_1_17 || var_1_15) ? ((var_1_15 && var_1_15) ? (var_1_18 == ((float) (var_1_11 + var_1_19))) : (var_1_18 == ((float) var_1_19))) : 1)) && ((var_1_11 == var_1_18) ? (var_1_20 == ((signed char) ((var_1_5 + var_1_21) + var_1_8))) : 1)) && (var_1_22 == ((double) var_1_12))) && (var_1_23 == ((unsigned long int) var_1_8))) && (var_1_24 == ((unsigned long int) var_1_6)) ; [L141] RET, EXPR property() [L141] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_12=100000005, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=1/4, var_1_19=1/4, var_1_1=2, var_1_20=-1, var_1_21=-31, var_1_22=100000005, var_1_23=0, var_1_24=64, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=64, var_1_8=0, var_1_9=100000005] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_15=1, last_1_var_1_1=2, last_1_var_1_20=0, var_1_12=100000005, var_1_13=-32, var_1_15=1, var_1_16=0, var_1_17=1, var_1_18=1/4, var_1_19=1/4, var_1_1=2, var_1_20=-1, var_1_21=-31, var_1_22=100000005, var_1_23=0, var_1_24=64, var_1_4=95, var_1_5=30, var_1_6=64, var_1_7=64, var_1_8=0, var_1_9=100000005] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 19, 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=39occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 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 [2023-12-02 18:58:36,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/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_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-32.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --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 3d2cf0a7074bcf0b96169875d5770b78078c347fd202e9f8698bc98c30c1867a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:58:38,841 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:58:38,921 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 18:58:38,927 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:58:38,928 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:58:38,957 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:58:38,957 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:58:38,958 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:58:38,959 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:58:38,959 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:58:38,960 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:58:38,960 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:58:38,961 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:58:38,961 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:58:38,962 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:58:38,962 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:58:38,963 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:58:38,964 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:58:38,964 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:58:38,965 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:58:38,965 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:58:38,966 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:58:38,966 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:58:38,967 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:58:38,967 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 18:58:38,968 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 18:58:38,968 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 18:58:38,969 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:58:38,969 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:58:38,969 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:58:38,970 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:58:38,970 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 18:58:38,971 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:58:38,971 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:58:38,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:58:38,972 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:58:38,972 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:58:38,973 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:58:38,973 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 18:58:38,973 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 18:58:38,973 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:58:38,974 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:58:38,974 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:58:38,974 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:58:38,974 INFO L153 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_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d2cf0a7074bcf0b96169875d5770b78078c347fd202e9f8698bc98c30c1867a [2023-12-02 18:58:39,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:58:39,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:58:39,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:58:39,318 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:58:39,318 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:58:39,319 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-32.i [2023-12-02 18:58:42,043 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:58:42,251 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:58:42,251 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-32.i [2023-12-02 18:58:42,261 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/data/99dcd8197/13a59568d9794d76b7c7b7d5aa65f3b2/FLAGff7a069f6 [2023-12-02 18:58:42,275 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/data/99dcd8197/13a59568d9794d76b7c7b7d5aa65f3b2 [2023-12-02 18:58:42,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:58:42,279 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:58:42,281 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:58:42,281 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:58:42,286 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:58:42,287 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:58:42" (1/1) ... [2023-12-02 18:58:42,288 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d34f50e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:42, skipping insertion in model container [2023-12-02 18:58:42,288 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:58:42" (1/1) ... [2023-12-02 18:58:42,320 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:58:42,470 WARN L240 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_39433b88-81ff-44bc-ab7f-78ed7239bca3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-32.i[915,928] [2023-12-02 18:58:42,522 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:58:42,537 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:58:42,550 WARN L240 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_39433b88-81ff-44bc-ab7f-78ed7239bca3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-32.i[915,928] [2023-12-02 18:58:42,578 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:58:42,597 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:58:42,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:42 WrapperNode [2023-12-02 18:58:42,598 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:58:42,599 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:58:42,599 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:58:42,599 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:58:42,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:42" (1/1) ... [2023-12-02 18:58:42,619 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:42" (1/1) ... [2023-12-02 18:58:42,648 INFO L138 Inliner]: procedures = 27, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 144 [2023-12-02 18:58:42,648 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:58:42,649 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:58:42,649 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:58:42,649 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:58:42,659 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:42" (1/1) ... [2023-12-02 18:58:42,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:42" (1/1) ... [2023-12-02 18:58:42,664 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:42" (1/1) ... [2023-12-02 18:58:42,664 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:42" (1/1) ... [2023-12-02 18:58:42,675 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:42" (1/1) ... [2023-12-02 18:58:42,678 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:42" (1/1) ... [2023-12-02 18:58:42,681 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:42" (1/1) ... [2023-12-02 18:58:42,683 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:42" (1/1) ... [2023-12-02 18:58:42,688 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:58:42,689 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:58:42,689 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:58:42,689 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:58:42,690 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:42" (1/1) ... [2023-12-02 18:58:42,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:58:42,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:58:42,718 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:58:42,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:58:42,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:58:42,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 18:58:42,752 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 18:58:42,752 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 18:58:42,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:58:42,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:58:42,844 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:58:42,847 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:58:45,608 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:58:45,674 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:58:45,674 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 18:58:45,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:58:45 BoogieIcfgContainer [2023-12-02 18:58:45,675 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:58:45,677 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:58:45,677 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:58:45,680 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:58:45,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:58:42" (1/3) ... [2023-12-02 18:58:45,680 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@668b493c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:58:45, skipping insertion in model container [2023-12-02 18:58:45,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:58:42" (2/3) ... [2023-12-02 18:58:45,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@668b493c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:58:45, skipping insertion in model container [2023-12-02 18:58:45,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:58:45" (3/3) ... [2023-12-02 18:58:45,682 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-1loop_file-32.i [2023-12-02 18:58:45,696 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:58:45,696 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 18:58:45,738 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:58:45,743 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=LoopHeads, 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;@24af32c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:58:45,743 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 18:58:45,747 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 34 states have internal predecessors, (49), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 18:58:45,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-02 18:58:45,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:58:45,759 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:58:45,760 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:58:45,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:58:45,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1127870704, now seen corresponding path program 1 times [2023-12-02 18:58:45,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:58:45,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720709322] [2023-12-02 18:58:45,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:58:45,776 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 [2023-12-02 18:58:45,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:58:45,798 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:58:45,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 18:58:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:58:46,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 18:58:46,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:58:46,129 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-12-02 18:58:46,129 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:58:46,130 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:58:46,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720709322] [2023-12-02 18:58:46,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720709322] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:58:46,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:58:46,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:58:46,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208901421] [2023-12-02 18:58:46,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:58:46,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 18:58:46,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:58:46,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 18:58:46,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 18:58:46,164 INFO L87 Difference]: Start difference. First operand has 55 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 34 states have internal predecessors, (49), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 18:58:48,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:58:48,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:58:48,239 INFO L93 Difference]: Finished difference Result 109 states and 192 transitions. [2023-12-02 18:58:48,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 18:58:48,241 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 118 [2023-12-02 18:58:48,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:58:48,248 INFO L225 Difference]: With dead ends: 109 [2023-12-02 18:58:48,248 INFO L226 Difference]: Without dead ends: 53 [2023-12-02 18:58:48,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 18:58:48,254 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:58:48,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-02 18:58:48,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-12-02 18:58:48,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-12-02 18:58:48,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 32 states have (on average 1.375) internal successors, (44), 32 states have internal predecessors, (44), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 18:58:48,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 82 transitions. [2023-12-02 18:58:48,295 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 82 transitions. Word has length 118 [2023-12-02 18:58:48,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:58:48,295 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 82 transitions. [2023-12-02 18:58:48,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 18:58:48,296 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 82 transitions. [2023-12-02 18:58:48,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-02 18:58:48,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:58:48,299 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:58:48,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 18:58:48,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:58:48,500 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:58:48,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:58:48,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1861015414, now seen corresponding path program 1 times [2023-12-02 18:58:48,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:58:48,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443280151] [2023-12-02 18:58:48,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:58:48,502 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 [2023-12-02 18:58:48,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:58:48,503 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:58:48,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 18:58:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:58:48,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:58:48,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:58:48,942 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 270 proven. 12 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-12-02 18:58:48,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:58:49,204 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 42 proven. 12 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-02 18:58:49,204 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:58:49,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443280151] [2023-12-02 18:58:49,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443280151] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:58:49,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [192302028] [2023-12-02 18:58:49,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:58:49,206 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:58:49,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:58:49,208 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:58:49,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-02 18:58:49,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:58:49,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:58:49,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:58:50,244 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-02 18:58:50,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:58:50,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [192302028] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:58:50,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:58:50,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 8 [2023-12-02 18:58:50,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559654514] [2023-12-02 18:58:50,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:58:50,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:58:50,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:58:50,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:58:50,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-02 18:58:50,249 INFO L87 Difference]: Start difference. First operand 53 states and 82 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-02 18:58:52,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:58:54,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:58:56,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:58:56,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:58:56,610 INFO L93 Difference]: Finished difference Result 157 states and 244 transitions. [2023-12-02 18:58:56,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:58:56,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 118 [2023-12-02 18:58:56,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:58:56,614 INFO L225 Difference]: With dead ends: 157 [2023-12-02 18:58:56,614 INFO L226 Difference]: Without dead ends: 105 [2023-12-02 18:58:56,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 344 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-02 18:58:56,617 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 20 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:58:56,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 147 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2023-12-02 18:58:56,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-02 18:58:56,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 102. [2023-12-02 18:58:56,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 61 states have (on average 1.360655737704918) internal successors, (83), 61 states have internal predecessors, (83), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-02 18:58:56,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 159 transitions. [2023-12-02 18:58:56,647 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 159 transitions. Word has length 118 [2023-12-02 18:58:56,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:58:56,649 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 159 transitions. [2023-12-02 18:58:56,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-02 18:58:56,649 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 159 transitions. [2023-12-02 18:58:56,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-02 18:58:56,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:58:56,652 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:58:56,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 18:58:56,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-12-02 18:58:57,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 18:58:57,055 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:58:57,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:58:57,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1862862456, now seen corresponding path program 1 times [2023-12-02 18:58:57,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:58:57,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987518067] [2023-12-02 18:58:57,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:58:57,056 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 [2023-12-02 18:58:57,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:58:57,057 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:58:57,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 18:58:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:58:57,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:58:57,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:58:57,448 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 270 proven. 12 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-12-02 18:58:57,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:58:57,652 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 42 proven. 12 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-02 18:58:57,652 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:58:57,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987518067] [2023-12-02 18:58:57,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987518067] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:58:57,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [900511814] [2023-12-02 18:58:57,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:58:57,654 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:58:57,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:58:57,655 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:58:57,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-02 18:58:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:58:58,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:58:58,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:58:58,472 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 270 proven. 12 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-12-02 18:58:58,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:58:58,627 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 42 proven. 12 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-02 18:58:58,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [900511814] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:58:58,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175175588] [2023-12-02 18:58:58,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:58:58,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:58:58,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:58:58,631 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:58:58,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 18:58:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:58:58,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:58:58,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:58:58,971 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 270 proven. 12 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-12-02 18:58:58,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:58:59,117 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 42 proven. 12 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-02 18:58:59,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175175588] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:58:59,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 18:58:59,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 7 [2023-12-02 18:58:59,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118098106] [2023-12-02 18:58:59,119 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 18:58:59,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:58:59,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:58:59,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:58:59,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:58:59,121 INFO L87 Difference]: Start difference. First operand 102 states and 159 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-02 18:59:01,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:59:01,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:59:01,748 INFO L93 Difference]: Finished difference Result 240 states and 366 transitions. [2023-12-02 18:59:01,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 18:59:01,748 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 118 [2023-12-02 18:59:01,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:59:01,750 INFO L225 Difference]: With dead ends: 240 [2023-12-02 18:59:01,751 INFO L226 Difference]: Without dead ends: 139 [2023-12-02 18:59:01,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 694 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-02 18:59:01,754 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 117 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:59:01,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 163 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-02 18:59:01,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-12-02 18:59:01,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 132. [2023-12-02 18:59:01,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 75 states have (on average 1.2666666666666666) internal successors, (95), 76 states have internal predecessors, (95), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-02 18:59:01,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 199 transitions. [2023-12-02 18:59:01,785 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 199 transitions. Word has length 118 [2023-12-02 18:59:01,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:59:01,786 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 199 transitions. [2023-12-02 18:59:01,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-02 18:59:01,786 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 199 transitions. [2023-12-02 18:59:01,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-02 18:59:01,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:59:01,789 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:59:01,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2023-12-02 18:59:02,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 18:59:02,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 18:59:02,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:59:02,395 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:59:02,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:59:02,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1726124695, now seen corresponding path program 1 times [2023-12-02 18:59:02,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:59:02,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141348252] [2023-12-02 18:59:02,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:59:02,396 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 [2023-12-02 18:59:02,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:59:02,397 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:59:02,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 18:59:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:59:02,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 18:59:02,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:59:17,868 WARN L293 SmtUtils]: Spent 5.88s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:59:19,010 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 368 proven. 42 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-12-02 18:59:19,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:59:49,138 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:59:49,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141348252] [2023-12-02 18:59:49,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141348252] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:59:49,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2038841743] [2023-12-02 18:59:49,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:59:49,139 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:59:49,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:59:49,140 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:59:49,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-02 18:59:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:59:49,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 18:59:49,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:00:06,377 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 368 proven. 42 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-12-02 19:00:06,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:00:20,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2038841743] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:00:20,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116667338] [2023-12-02 19:00:20,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:00:20,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:00:20,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:00:20,188 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:00:20,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 19:00:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:00:21,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 19:00:21,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:00:34,151 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 100000000000000000000.0)))) (and (fp.geq c_~var_1_11~0 .cse0) (let ((.cse3 (fp.neg c_~var_1_18~0)) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven 9223372036854765600.0))) (let ((.cse1 (fp.lt c_~var_1_18~0 c_~var_1_11~0)) (.cse2 (exists ((~var_1_12~0 (_ FloatingPoint 8 24))) (and (not (fp.gt (fp.mul roundNearestTiesToEven ~var_1_12~0 c_~var_1_11~0) .cse3)) (fp.leq ~var_1_12~0 .cse4) (fp.geq ~var_1_12~0 .cse0))))) (or (and (not .cse1) .cse2) (and (exists ((~var_1_12~0 (_ FloatingPoint 8 24))) (and (not (fp.gt (fp.mul roundNearestTiesToEven ~var_1_12~0 c_~var_1_18~0) .cse3)) (fp.leq ~var_1_12~0 .cse4) (fp.geq ~var_1_12~0 .cse0))) .cse1) .cse2))) (exists ((~var_1_19~0 (_ FloatingPoint 8 24))) (= (fp.add roundNearestTiesToEven c_~var_1_11~0 ~var_1_19~0) c_~var_1_18~0)) (fp.leq c_~var_1_11~0 ((_ to_fp 8 24) roundNearestTiesToEven 4611686018427382800.0)))) is different from false [2023-12-02 19:00:35,828 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 368 proven. 42 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-12-02 19:00:35,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:01:08,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116667338] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:01:08,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:01:08,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 12 [2023-12-02 19:01:08,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555185049] [2023-12-02 19:01:08,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:01:08,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 19:01:08,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:01:08,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 19:01:08,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=153, Unknown=3, NotChecked=26, Total=240 [2023-12-02 19:01:08,135 INFO L87 Difference]: Start difference. First operand 132 states and 199 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-02 19:01:23,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 19:01:39,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 19:01:40,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 19:01:42,958 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 100000000000000000000.0))) (.cse3 (fp.neg c_~var_1_18~0)) (.cse5 ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 100000000000000000000.0)))) (and (fp.geq c_~var_1_11~0 .cse0) (let ((.cse4 ((_ to_fp 8 24) roundNearestTiesToEven 9223372036854765600.0))) (let ((.cse1 (fp.lt c_~var_1_18~0 c_~var_1_11~0)) (.cse2 (exists ((~var_1_12~0 (_ FloatingPoint 8 24))) (and (not (fp.gt (fp.mul roundNearestTiesToEven ~var_1_12~0 c_~var_1_11~0) .cse3)) (fp.leq ~var_1_12~0 .cse4) (fp.geq ~var_1_12~0 .cse0))))) (or (and (not .cse1) .cse2) (and (exists ((~var_1_12~0 (_ FloatingPoint 8 24))) (and (not (fp.gt (fp.mul roundNearestTiesToEven ~var_1_12~0 c_~var_1_18~0) .cse3)) (fp.leq ~var_1_12~0 .cse4) (fp.geq ~var_1_12~0 .cse0))) .cse1) .cse2))) (exists ((~var_1_19~0 (_ FloatingPoint 8 24))) (= (fp.add roundNearestTiesToEven c_~var_1_11~0 ~var_1_19~0) c_~var_1_18~0)) (fp.leq c_~var_1_11~0 ((_ to_fp 8 24) c_currentRoundingMode 4611686018427382800.0)) (not (fp.gt (fp.mul c_currentRoundingMode c_~var_1_12~0 c_~var_1_18~0) .cse3)) (fp.geq c_~var_1_11~0 .cse5) (fp.leq c_~var_1_11~0 ((_ to_fp 8 24) roundNearestTiesToEven 4611686018427382800.0)) (fp.leq c_~var_1_12~0 ((_ to_fp 8 24) c_currentRoundingMode 9223372036854765600.0)) (fp.geq c_~var_1_12~0 .cse5) (= c_currentRoundingMode roundNearestTiesToEven) (exists ((~var_1_19~0 (_ FloatingPoint 8 24))) (= (fp.add c_currentRoundingMode c_~var_1_11~0 ~var_1_19~0) c_~var_1_18~0)))) is different from false [2023-12-02 19:01:45,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 19:01:48,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 19:01:54,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 19:01:57,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 19:01:59,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 19:02:01,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 19:02:02,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 19:02:04,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 19:02:05,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 19:02:07,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 19:02:09,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 19:02:12,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 19:02:28,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 19:02:30,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 19:02:32,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 19:02:34,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 19:02:36,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 19:02:44,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 19:02:46,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 19:02:53,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result VALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 19:02:55,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result VALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 19:02:57,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 19:03:01,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 19:03:05,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 19:03:08,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 19:03:09,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 19:03:11,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 19:03:13,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result VALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 19:03:16,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:03:16,551 INFO L93 Difference]: Finished difference Result 509 states and 730 transitions. [2023-12-02 19:03:16,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-02 19:03:16,552 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 119 [2023-12-02 19:03:16,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:03:16,557 INFO L225 Difference]: With dead ends: 509 [2023-12-02 19:03:16,557 INFO L226 Difference]: Without dead ends: 400 [2023-12-02 19:03:16,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 379 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 84.8s TimeCoverageRelationStatistics Valid=195, Invalid=459, Unknown=4, NotChecked=98, Total=756 [2023-12-02 19:03:16,560 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 191 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 99 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 100.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 201 IncrementalHoareTripleChecker+Unchecked, 101.7s IncrementalHoareTripleChecker+Time [2023-12-02 19:03:16,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 434 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 341 Invalid, 14 Unknown, 201 Unchecked, 101.7s Time] [2023-12-02 19:03:16,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2023-12-02 19:03:16,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 326. [2023-12-02 19:03:16,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 198 states have (on average 1.2626262626262625) internal successors, (250), 201 states have internal predecessors, (250), 110 states have call successors, (110), 17 states have call predecessors, (110), 17 states have return successors, (110), 107 states have call predecessors, (110), 110 states have call successors, (110) [2023-12-02 19:03:16,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 470 transitions. [2023-12-02 19:03:16,619 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 470 transitions. Word has length 119 [2023-12-02 19:03:16,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:03:16,620 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 470 transitions. [2023-12-02 19:03:16,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-02 19:03:16,620 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 470 transitions. [2023-12-02 19:03:16,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-02 19:03:16,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:03:16,623 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:03:16,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 19:03:16,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2023-12-02 19:03:17,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 19:03:17,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:03:17,227 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:03:17,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:03:17,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1668866393, now seen corresponding path program 1 times [2023-12-02 19:03:17,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:03:17,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1049225102] [2023-12-02 19:03:17,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:03:17,228 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 [2023-12-02 19:03:17,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:03:17,229 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 19:03:17,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39433b88-81ff-44bc-ab7f-78ed7239bca3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-02 19:03:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:03:17,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-02 19:03:17,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:04:05,302 WARN L293 SmtUtils]: Spent 9.38s on a formula simplification that was a NOOP. DAG size: 65 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)