./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-81.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_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/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_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-81.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/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_3eb5a5b5-9827-4629-8106-a4d98d217d97/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 d61c0dafed482002b011add1f5476de4fd21f0cbe5ef1ca0c06dd442b2a70902 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:34:08,002 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:34:08,097 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 16:34:08,102 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:34:08,103 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:34:08,128 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:34:08,128 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:34:08,129 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:34:08,130 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:34:08,130 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:34:08,131 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:34:08,131 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:34:08,132 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:34:08,132 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:34:08,133 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:34:08,133 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:34:08,134 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:34:08,134 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:34:08,135 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:34:08,135 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:34:08,136 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:34:08,136 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:34:08,137 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:34:08,137 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:34:08,138 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:34:08,138 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:34:08,139 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:34:08,139 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:34:08,139 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:34:08,140 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:34:08,140 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:34:08,141 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:34:08,141 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:34:08,142 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:34:08,142 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:34:08,142 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:34:08,143 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:34:08,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:34:08,143 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:34:08,143 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:34:08,143 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:34:08,144 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:34:08,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:34:08,144 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:34:08,144 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:34:08,145 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:34:08,145 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:34:08,145 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_3eb5a5b5-9827-4629-8106-a4d98d217d97/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d61c0dafed482002b011add1f5476de4fd21f0cbe5ef1ca0c06dd442b2a70902 [2023-12-02 16:34:08,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:34:08,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:34:08,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:34:08,409 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:34:08,410 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:34:08,411 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-81.i [2023-12-02 16:34:11,110 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:34:11,308 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:34:11,309 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-81.i [2023-12-02 16:34:11,316 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/data/57666928c/fbb9d52cba204997bc33d9cab077cb52/FLAG9d3eab23f [2023-12-02 16:34:11,328 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/data/57666928c/fbb9d52cba204997bc33d9cab077cb52 [2023-12-02 16:34:11,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:34:11,331 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:34:11,332 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:34:11,332 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:34:11,338 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:34:11,338 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:34:11" (1/1) ... [2023-12-02 16:34:11,339 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ce97ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:11, skipping insertion in model container [2023-12-02 16:34:11,340 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:34:11" (1/1) ... [2023-12-02 16:34:11,372 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:34:11,510 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_3eb5a5b5-9827-4629-8106-a4d98d217d97/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-81.i[915,928] [2023-12-02 16:34:11,558 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:34:11,571 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:34:11,584 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_3eb5a5b5-9827-4629-8106-a4d98d217d97/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-81.i[915,928] [2023-12-02 16:34:11,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:34:11,624 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:34:11,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:11 WrapperNode [2023-12-02 16:34:11,624 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:34:11,625 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:34:11,625 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:34:11,626 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:34:11,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:11" (1/1) ... [2023-12-02 16:34:11,643 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:11" (1/1) ... [2023-12-02 16:34:11,672 INFO L138 Inliner]: procedures = 26, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 154 [2023-12-02 16:34:11,673 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:34:11,673 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:34:11,674 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:34:11,674 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:34:11,685 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:11" (1/1) ... [2023-12-02 16:34:11,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:11" (1/1) ... [2023-12-02 16:34:11,688 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:11" (1/1) ... [2023-12-02 16:34:11,688 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:11" (1/1) ... [2023-12-02 16:34:11,695 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:11" (1/1) ... [2023-12-02 16:34:11,700 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:11" (1/1) ... [2023-12-02 16:34:11,702 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:11" (1/1) ... [2023-12-02 16:34:11,703 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:11" (1/1) ... [2023-12-02 16:34:11,707 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:34:11,708 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:34:11,708 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:34:11,708 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:34:11,709 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:11" (1/1) ... [2023-12-02 16:34:11,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:34:11,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:34:11,740 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:34:11,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:34:11,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:34:11,771 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 16:34:11,771 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 16:34:11,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:34:11,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:34:11,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:34:11,841 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:34:11,842 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:34:12,064 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:34:12,214 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:34:12,214 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 16:34:12,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:34:12 BoogieIcfgContainer [2023-12-02 16:34:12,216 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:34:12,219 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:34:12,219 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:34:12,223 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:34:12,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:34:11" (1/3) ... [2023-12-02 16:34:12,223 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39cc6dd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:34:12, skipping insertion in model container [2023-12-02 16:34:12,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:11" (2/3) ... [2023-12-02 16:34:12,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39cc6dd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:34:12, skipping insertion in model container [2023-12-02 16:34:12,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:34:12" (3/3) ... [2023-12-02 16:34:12,225 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-81.i [2023-12-02 16:34:12,245 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:34:12,245 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 16:34:12,288 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:34:12,293 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;@27f9fc49, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:34:12,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 16:34:12,297 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 16:34:12,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-02 16:34:12,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:34:12,306 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:12,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:34:12,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:34:12,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1973935777, now seen corresponding path program 1 times [2023-12-02 16:34:12,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:34:12,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635164493] [2023-12-02 16:34:12,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:34:12,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:34:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 16:34:12,576 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 16:34:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 16:34:12,737 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 16:34:12,739 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 16:34:12,740 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 16:34:12,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 16:34:12,747 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 16:34:12,752 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 16:34:12,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 04:34:12 BoogieIcfgContainer [2023-12-02 16:34:12,810 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 16:34:12,811 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 16:34:12,811 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 16:34:12,811 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 16:34:12,812 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:34:12" (3/4) ... [2023-12-02 16:34:12,814 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 16:34:12,816 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 16:34:12,817 INFO L158 Benchmark]: Toolchain (without parser) took 1485.82ms. Allocated memory is still 226.5MB. Free memory was 194.6MB in the beginning and 111.4MB in the end (delta: 83.2MB). Peak memory consumption was 82.0MB. Max. memory is 16.1GB. [2023-12-02 16:34:12,817 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 130.0MB. Free memory is still 95.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:34:12,818 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.50ms. Allocated memory is still 226.5MB. Free memory was 194.6MB in the beginning and 185.9MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-12-02 16:34:12,819 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.60ms. Allocated memory is still 226.5MB. Free memory was 185.9MB in the beginning and 183.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 16:34:12,819 INFO L158 Benchmark]: Boogie Preprocessor took 33.44ms. Allocated memory is still 226.5MB. Free memory was 183.8MB in the beginning and 181.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 16:34:12,820 INFO L158 Benchmark]: RCFGBuilder took 508.41ms. Allocated memory is still 226.5MB. Free memory was 181.7MB in the beginning and 150.2MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-12-02 16:34:12,821 INFO L158 Benchmark]: TraceAbstraction took 590.89ms. Allocated memory is still 226.5MB. Free memory was 149.2MB in the beginning and 112.5MB in the end (delta: 36.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-12-02 16:34:12,821 INFO L158 Benchmark]: Witness Printer took 4.90ms. Allocated memory is still 226.5MB. Free memory was 112.5MB in the beginning and 111.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 16:34:12,825 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 130.0MB. Free memory is still 95.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 292.50ms. Allocated memory is still 226.5MB. Free memory was 194.6MB in the beginning and 185.9MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.60ms. Allocated memory is still 226.5MB. Free memory was 185.9MB in the beginning and 183.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.44ms. Allocated memory is still 226.5MB. Free memory was 183.8MB in the beginning and 181.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 508.41ms. Allocated memory is still 226.5MB. Free memory was 181.7MB in the beginning and 150.2MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 590.89ms. Allocated memory is still 226.5MB. Free memory was 149.2MB in the beginning and 112.5MB in the end (delta: 36.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Witness Printer took 4.90ms. Allocated memory is still 226.5MB. Free memory was 112.5MB in the beginning and 111.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 someBinaryDOUBLEComparisonOperation at line 68, overapproximation of bitwiseOr at line 59, overapproximation of someBinaryArithmeticDOUBLEoperation at line 68. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] double var_1_1 = 9999.5; [L23] unsigned char var_1_2 = 1; [L24] double var_1_3 = 4.5; [L25] double var_1_4 = 2.5; [L26] double var_1_5 = 0.0; [L27] double var_1_6 = 999999999999.3; [L28] signed char var_1_7 = -128; [L29] signed char var_1_11 = -64; [L30] signed char var_1_12 = 5; [L31] signed char var_1_13 = 50; [L32] unsigned char var_1_14 = 0; [L33] unsigned char var_1_15 = 0; [L34] unsigned char var_1_16 = 0; [L35] unsigned char var_1_17 = 0; [L36] signed char last_1_var_1_7 = -128; [L107] isInitial = 1 [L108] FCALL initially() [L109] int k_loop; [L110] k_loop = 0 VAL [isInitial=1, k_loop=0, last_1_var_1_7=-128, var_1_11=-64, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=1, var_1_3=9/2, var_1_4=5/2, var_1_5=0, var_1_6=9999999999993/10, var_1_7=-128] [L110] COND TRUE k_loop < 1 [L111] CALL updateLastVariables() [L100] last_1_var_1_7 = var_1_7 [L111] RET updateLastVariables() [L112] CALL updateVariables() [L72] var_1_2 = __VERIFIER_nondet_uchar() [L73] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=-64, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_3=9/2, var_1_4=5/2, var_1_5=0, var_1_6=9999999999993/10, var_1_7=-128] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=-64, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_3=9/2, var_1_4=5/2, var_1_5=0, var_1_6=9999999999993/10, var_1_7=-128] [L74] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=-64, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_3=9/2, var_1_4=5/2, var_1_5=0, var_1_6=9999999999993/10, var_1_7=-128] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=-64, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_3=9/2, var_1_4=5/2, var_1_5=0, var_1_6=9999999999993/10, var_1_7=-128] [L75] var_1_3 = __VERIFIER_nondet_double() [L76] CALL assume_abort_if_not((var_1_3 >= -922337.2036854765600e+13F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 9223372.036854765600e+12F && var_1_3 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=-64, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_4=5/2, var_1_5=0, var_1_6=9999999999993/10, var_1_7=-128] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not((var_1_3 >= -922337.2036854765600e+13F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 9223372.036854765600e+12F && var_1_3 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=-64, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_4=5/2, var_1_5=0, var_1_6=9999999999993/10, var_1_7=-128] [L77] var_1_4 = __VERIFIER_nondet_double() [L78] CALL assume_abort_if_not((var_1_4 >= 0.0F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 9223372.036854765600e+12F && var_1_4 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=-64, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_5=0, var_1_6=9999999999993/10, var_1_7=-128] [L20] COND FALSE !(!cond) [L78] RET assume_abort_if_not((var_1_4 >= 0.0F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 9223372.036854765600e+12F && var_1_4 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=-64, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_5=0, var_1_6=9999999999993/10, var_1_7=-128] [L79] var_1_5 = __VERIFIER_nondet_double() [L80] CALL assume_abort_if_not((var_1_5 >= 4611686.018427382800e+12F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854765600e+12F && var_1_5 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=-64, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_6=9999999999993/10, var_1_7=-128] [L20] COND FALSE !(!cond) [L80] RET assume_abort_if_not((var_1_5 >= 4611686.018427382800e+12F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854765600e+12F && var_1_5 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=-64, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_6=9999999999993/10, var_1_7=-128] [L81] var_1_6 = __VERIFIER_nondet_double() [L82] CALL assume_abort_if_not((var_1_6 >= 0.0F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 4611686.018427382800e+12F && var_1_6 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=-64, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L20] COND FALSE !(!cond) [L82] RET assume_abort_if_not((var_1_6 >= 0.0F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 4611686.018427382800e+12F && var_1_6 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=-64, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L83] var_1_11 = __VERIFIER_nondet_char() [L84] CALL assume_abort_if_not(var_1_11 >= -127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=25, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L20] COND FALSE !(!cond) [L84] RET assume_abort_if_not(var_1_11 >= -127) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=25, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L85] CALL assume_abort_if_not(var_1_11 <= 126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=25, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L20] COND FALSE !(!cond) [L85] RET assume_abort_if_not(var_1_11 <= 126) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=25, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L86] var_1_13 = __VERIFIER_nondet_char() [L87] CALL assume_abort_if_not(var_1_13 >= -1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=25, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L20] COND FALSE !(!cond) [L87] RET assume_abort_if_not(var_1_13 >= -1) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=25, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L88] CALL assume_abort_if_not(var_1_13 <= 126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=25, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L20] COND FALSE !(!cond) [L88] RET assume_abort_if_not(var_1_13 <= 126) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=25, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L89] var_1_15 = __VERIFIER_nondet_uchar() [L90] CALL assume_abort_if_not(var_1_15 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=25, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L20] COND FALSE !(!cond) [L90] RET assume_abort_if_not(var_1_15 >= 0) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=25, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L91] CALL assume_abort_if_not(var_1_15 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=25, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=1, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L20] COND FALSE !(!cond) [L91] RET assume_abort_if_not(var_1_15 <= 1) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=25, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=1, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L92] var_1_16 = __VERIFIER_nondet_uchar() [L93] CALL assume_abort_if_not(var_1_16 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=25, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=1, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L20] COND FALSE !(!cond) [L93] RET assume_abort_if_not(var_1_16 >= 0) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=25, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=1, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L94] CALL assume_abort_if_not(var_1_16 <= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=25, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=1, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L20] COND FALSE !(!cond) [L94] RET assume_abort_if_not(var_1_16 <= 0) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=25, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=1, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L95] var_1_17 = __VERIFIER_nondet_uchar() [L96] CALL assume_abort_if_not(var_1_17 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=25, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=1, var_1_16=0, var_1_17=1, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L20] COND FALSE !(!cond) [L96] RET assume_abort_if_not(var_1_17 >= 1) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=25, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=1, var_1_16=0, var_1_17=1, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L97] CALL assume_abort_if_not(var_1_17 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=25, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=1, var_1_16=0, var_1_17=1, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L20] COND FALSE !(!cond) [L97] RET assume_abort_if_not(var_1_17 <= 1) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=25, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=1, var_1_16=0, var_1_17=1, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L112] RET updateVariables() [L113] CALL step() [L40] signed long int stepLocal_1 = ((((last_1_var_1_7) < (last_1_var_1_7)) ? (last_1_var_1_7) : (last_1_var_1_7))) + last_1_var_1_7; [L41] COND FALSE !(last_1_var_1_7 <= stepLocal_1) [L44] var_1_12 = var_1_11 [L46] unsigned char stepLocal_3 = var_1_2; [L47] unsigned long int stepLocal_2 = (((25u) > (var_1_12)) ? (25u) : (var_1_12)); [L48] COND TRUE stepLocal_3 || var_1_15 [L49] COND TRUE stepLocal_2 <= var_1_12 [L50] COND FALSE !(\read(var_1_2)) [L53] var_1_14 = var_1_17 [L59] EXPR var_1_12 ^ var_1_12 [L59] signed long int stepLocal_0 = var_1_12 ^ var_1_12; [L60] COND TRUE ((((-25) < (var_1_12)) ? (-25) : (var_1_12))) != stepLocal_0 [L61] COND TRUE \read(var_1_14) [L62] var_1_7 = var_1_11 [L67] COND TRUE \read(var_1_14) [L68] var_1_1 = ((((var_1_3) > ((var_1_4 - (var_1_5 - var_1_6)))) ? (var_1_3) : ((var_1_4 - (var_1_5 - var_1_6))))) [L113] RET step() [L114] CALL, EXPR property() [L103] EXPR (var_1_14 ? (var_1_1 == ((double) ((((var_1_3) > ((var_1_4 - (var_1_5 - var_1_6)))) ? (var_1_3) : ((var_1_4 - (var_1_5 - var_1_6))))))) : 1) && ((((((-25) < (var_1_12)) ? (-25) : (var_1_12))) != (var_1_12 ^ var_1_12)) ? (var_1_14 ? (var_1_7 == ((signed char) var_1_11)) : 1) : (var_1_7 == ((signed char) var_1_11))) [L103-L104] return (((var_1_14 ? (var_1_1 == ((double) ((((var_1_3) > ((var_1_4 - (var_1_5 - var_1_6)))) ? (var_1_3) : ((var_1_4 - (var_1_5 - var_1_6))))))) : 1) && ((((((-25) < (var_1_12)) ? (-25) : (var_1_12))) != (var_1_12 ^ var_1_12)) ? (var_1_14 ? (var_1_7 == ((signed char) var_1_11)) : 1) : (var_1_7 == ((signed char) var_1_11)))) && ((last_1_var_1_7 <= (((((last_1_var_1_7) < (last_1_var_1_7)) ? (last_1_var_1_7) : (last_1_var_1_7))) + last_1_var_1_7)) ? (var_1_12 == ((signed char) (var_1_13 - 1))) : (var_1_12 == ((signed char) var_1_11)))) && ((var_1_2 || var_1_15) ? ((((((25u) > (var_1_12)) ? (25u) : (var_1_12))) <= var_1_12) ? (var_1_2 ? (var_1_14 == ((unsigned char) var_1_16)) : (var_1_14 == ((unsigned char) var_1_17))) : 1) : (var_1_14 == ((unsigned char) var_1_16))) ; [L114] RET, EXPR property() [L114] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_7=-128, var_1_11=25, var_1_12=25, var_1_13=-1, var_1_14=1, var_1_15=1, var_1_16=0, var_1_17=1, var_1_1=19999/2, var_1_2=0, var_1_3=19999/2, var_1_7=25] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_7=-128, var_1_11=25, var_1_12=25, var_1_13=-1, var_1_14=1, var_1_15=1, var_1_16=0, var_1_17=1, var_1_1=19999/2, var_1_2=0, var_1_3=19999/2, var_1_7=25] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 16, 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=35occurred 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, 62 NumberOfCodeBlocks, 62 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 16:34:12,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/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_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/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_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-81.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/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_3eb5a5b5-9827-4629-8106-a4d98d217d97/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 d61c0dafed482002b011add1f5476de4fd21f0cbe5ef1ca0c06dd442b2a70902 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:34:14,849 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:34:14,914 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 16:34:14,919 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:34:14,920 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:34:14,945 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:34:14,945 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:34:14,945 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:34:14,946 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:34:14,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:34:14,947 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:34:14,948 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:34:14,948 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:34:14,949 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:34:14,949 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:34:14,950 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:34:14,951 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:34:14,951 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:34:14,952 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:34:14,952 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:34:14,953 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:34:14,954 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:34:14,954 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:34:14,954 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:34:14,955 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 16:34:14,955 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 16:34:14,956 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 16:34:14,956 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:34:14,957 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:34:14,957 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:34:14,957 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:34:14,958 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 16:34:14,958 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:34:14,958 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:34:14,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:34:14,959 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:34:14,959 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:34:14,959 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:34:14,959 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 16:34:14,960 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 16:34:14,960 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:34:14,960 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:34:14,960 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:34:14,961 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:34:14,961 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_3eb5a5b5-9827-4629-8106-a4d98d217d97/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d61c0dafed482002b011add1f5476de4fd21f0cbe5ef1ca0c06dd442b2a70902 [2023-12-02 16:34:15,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:34:15,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:34:15,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:34:15,295 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:34:15,295 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:34:15,296 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-81.i [2023-12-02 16:34:18,143 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:34:18,345 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:34:18,346 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-81.i [2023-12-02 16:34:18,355 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/data/1a860b8a4/b73c3b2fc0af4949a121e4607cacd2ec/FLAG67c795cb3 [2023-12-02 16:34:18,371 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/data/1a860b8a4/b73c3b2fc0af4949a121e4607cacd2ec [2023-12-02 16:34:18,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:34:18,376 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:34:18,377 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:34:18,377 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:34:18,383 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:34:18,384 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:34:18" (1/1) ... [2023-12-02 16:34:18,386 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b809a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:18, skipping insertion in model container [2023-12-02 16:34:18,386 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:34:18" (1/1) ... [2023-12-02 16:34:18,416 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:34:18,569 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_3eb5a5b5-9827-4629-8106-a4d98d217d97/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-81.i[915,928] [2023-12-02 16:34:18,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:34:18,631 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:34:18,642 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_3eb5a5b5-9827-4629-8106-a4d98d217d97/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-81.i[915,928] [2023-12-02 16:34:18,668 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:34:18,685 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:34:18,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:18 WrapperNode [2023-12-02 16:34:18,685 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:34:18,686 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:34:18,686 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:34:18,686 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:34:18,692 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:18" (1/1) ... [2023-12-02 16:34:18,704 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:18" (1/1) ... [2023-12-02 16:34:18,732 INFO L138 Inliner]: procedures = 27, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 120 [2023-12-02 16:34:18,733 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:34:18,733 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:34:18,734 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:34:18,734 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:34:18,741 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:18" (1/1) ... [2023-12-02 16:34:18,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:18" (1/1) ... [2023-12-02 16:34:18,746 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:18" (1/1) ... [2023-12-02 16:34:18,747 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:18" (1/1) ... [2023-12-02 16:34:18,757 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:18" (1/1) ... [2023-12-02 16:34:18,762 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:18" (1/1) ... [2023-12-02 16:34:18,765 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:18" (1/1) ... [2023-12-02 16:34:18,767 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:18" (1/1) ... [2023-12-02 16:34:18,771 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:34:18,773 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:34:18,773 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:34:18,773 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:34:18,774 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:18" (1/1) ... [2023-12-02 16:34:18,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:34:18,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:34:18,803 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:34:18,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:34:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:34:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 16:34:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 16:34:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 16:34:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:34:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:34:18,947 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:34:18,950 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:34:21,139 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:34:21,182 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:34:21,182 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 16:34:21,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:34:21 BoogieIcfgContainer [2023-12-02 16:34:21,183 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:34:21,186 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:34:21,186 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:34:21,189 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:34:21,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:34:18" (1/3) ... [2023-12-02 16:34:21,190 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267fe7fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:34:21, skipping insertion in model container [2023-12-02 16:34:21,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:18" (2/3) ... [2023-12-02 16:34:21,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267fe7fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:34:21, skipping insertion in model container [2023-12-02 16:34:21,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:34:21" (3/3) ... [2023-12-02 16:34:21,192 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-81.i [2023-12-02 16:34:21,211 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:34:21,211 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 16:34:21,253 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:34:21,258 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;@73ace36d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:34:21,258 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 16:34:21,262 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 30 states have internal predecessors, (41), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 16:34:21,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-02 16:34:21,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:34:21,275 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:21,276 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:34:21,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:34:21,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1365061803, now seen corresponding path program 1 times [2023-12-02 16:34:21,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:34:21,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491996823] [2023-12-02 16:34:21,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:34:21,298 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 16:34:21,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:34:21,299 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/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 16:34:21,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/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 16:34:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:34:21,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 16:34:21,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:34:21,626 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-02 16:34:21,626 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:34:21,627 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:34:21,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491996823] [2023-12-02 16:34:21,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [491996823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:34:21,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:34:21,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:34:21,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461755062] [2023-12-02 16:34:21,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:34:21,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 16:34:21,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:34:21,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 16:34:21,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 16:34:21,657 INFO L87 Difference]: Start difference. First operand has 48 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 30 states have internal predecessors, (41), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 16:34:22,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:34:22,502 INFO L93 Difference]: Finished difference Result 95 states and 161 transitions. [2023-12-02 16:34:22,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 16:34:22,505 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 101 [2023-12-02 16:34:22,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:34:22,513 INFO L225 Difference]: With dead ends: 95 [2023-12-02 16:34:22,514 INFO L226 Difference]: Without dead ends: 46 [2023-12-02 16:34:22,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 100 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 16:34:22,522 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:34:22,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 16:34:22,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-02 16:34:22,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-12-02 16:34:22,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 16:34:22,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 68 transitions. [2023-12-02 16:34:22,569 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 68 transitions. Word has length 101 [2023-12-02 16:34:22,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:34:22,570 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 68 transitions. [2023-12-02 16:34:22,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 16:34:22,570 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 68 transitions. [2023-12-02 16:34:22,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-02 16:34:22,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:34:22,575 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:22,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/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 16:34:22,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/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 16:34:22,776 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:34:22,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:34:22,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1537864525, now seen corresponding path program 1 times [2023-12-02 16:34:22,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:34:22,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924158264] [2023-12-02 16:34:22,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:34:22,778 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 16:34:22,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:34:22,780 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/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 16:34:22,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/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 16:34:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:34:23,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:34:23,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:34:23,475 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-02 16:34:23,475 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:34:23,475 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:34:23,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924158264] [2023-12-02 16:34:23,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924158264] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:34:23,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:34:23,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:34:23,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917872978] [2023-12-02 16:34:23,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:34:23,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:34:23,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:34:23,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:34:23,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:34:23,481 INFO L87 Difference]: Start difference. First operand 46 states and 68 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:34:25,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:34:26,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:34:26,302 INFO L93 Difference]: Finished difference Result 143 states and 210 transitions. [2023-12-02 16:34:26,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:34:26,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 101 [2023-12-02 16:34:26,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:34:26,306 INFO L225 Difference]: With dead ends: 143 [2023-12-02 16:34:26,307 INFO L226 Difference]: Without dead ends: 98 [2023-12-02 16:34:26,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:34:26,309 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 67 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:34:26,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 208 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-02 16:34:26,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-12-02 16:34:26,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 89. [2023-12-02 16:34:26,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.2777777777777777) internal successors, (69), 54 states have internal predecessors, (69), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-02 16:34:26,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 133 transitions. [2023-12-02 16:34:26,340 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 133 transitions. Word has length 101 [2023-12-02 16:34:26,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:34:26,341 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 133 transitions. [2023-12-02 16:34:26,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:34:26,342 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 133 transitions. [2023-12-02 16:34:26,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-02 16:34:26,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:34:26,345 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:26,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/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 16:34:26,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/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 16:34:26,546 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:34:26,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:34:26,546 INFO L85 PathProgramCache]: Analyzing trace with hash -2077044401, now seen corresponding path program 1 times [2023-12-02 16:34:26,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:34:26,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376609084] [2023-12-02 16:34:26,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:34:26,548 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 16:34:26,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:34:26,549 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/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 16:34:26,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/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)] Waiting until timeout for monitored process [2023-12-02 16:34:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:34:26,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 16:34:26,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:34:26,837 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-02 16:34:26,837 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:34:26,837 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:34:26,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [376609084] [2023-12-02 16:34:26,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [376609084] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:34:26,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:34:26,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:34:26,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079891804] [2023-12-02 16:34:26,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:34:26,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:34:26,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:34:26,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:34:26,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:34:26,842 INFO L87 Difference]: Start difference. First operand 89 states and 133 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:34:28,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:34:28,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:34:28,192 INFO L93 Difference]: Finished difference Result 134 states and 200 transitions. [2023-12-02 16:34:28,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:34:28,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 101 [2023-12-02 16:34:28,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:34:28,196 INFO L225 Difference]: With dead ends: 134 [2023-12-02 16:34:28,196 INFO L226 Difference]: Without dead ends: 89 [2023-12-02 16:34:28,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:34:28,199 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 5 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:34:28,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 113 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 16:34:28,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-02 16:34:28,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-12-02 16:34:28,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.2407407407407407) internal successors, (67), 54 states have internal predecessors, (67), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-02 16:34:28,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 131 transitions. [2023-12-02 16:34:28,223 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 131 transitions. Word has length 101 [2023-12-02 16:34:28,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:34:28,224 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 131 transitions. [2023-12-02 16:34:28,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:34:28,224 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 131 transitions. [2023-12-02 16:34:28,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-02 16:34:28,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:34:28,227 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:28,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/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)] Forceful destruction successful, exit code 0 [2023-12-02 16:34:28,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/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 16:34:28,432 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:34:28,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:34:28,433 INFO L85 PathProgramCache]: Analyzing trace with hash -203296266, now seen corresponding path program 1 times [2023-12-02 16:34:28,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:34:28,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382262082] [2023-12-02 16:34:28,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:34:28,433 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 16:34:28,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:34:28,435 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/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 16:34:28,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/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 16:34:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:34:28,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:34:28,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:34:28,800 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 145 proven. 6 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2023-12-02 16:34:28,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:34:29,019 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 39 proven. 6 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-02 16:34:29,019 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:34:29,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382262082] [2023-12-02 16:34:29,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382262082] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:34:29,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1802953199] [2023-12-02 16:34:29,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:34:29,021 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:34:29,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:34:29,024 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:34:29,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-02 16:34:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:34:29,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 16:34:29,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:34:29,758 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 145 proven. 6 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2023-12-02 16:34:29,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:34:29,933 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 39 proven. 6 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-02 16:34:29,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1802953199] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:34:29,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040891244] [2023-12-02 16:34:29,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:34:29,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:34:29,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:34:29,937 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:34:29,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 16:34:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:34:30,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:34:30,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:34:30,254 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 145 proven. 6 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2023-12-02 16:34:30,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:34:30,408 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 39 proven. 6 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-02 16:34:30,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040891244] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:34:30,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 16:34:30,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 8 [2023-12-02 16:34:30,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855131740] [2023-12-02 16:34:30,409 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 16:34:30,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:34:30,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:34:30,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:34:30,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:34:30,412 INFO L87 Difference]: Start difference. First operand 89 states and 131 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 16:34:33,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:34:33,351 INFO L93 Difference]: Finished difference Result 249 states and 352 transitions. [2023-12-02 16:34:33,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 16:34:33,351 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 102 [2023-12-02 16:34:33,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:34:33,353 INFO L225 Difference]: With dead ends: 249 [2023-12-02 16:34:33,354 INFO L226 Difference]: Without dead ends: 161 [2023-12-02 16:34:33,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 598 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-02 16:34:33,356 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 164 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:34:33,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 129 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-02 16:34:33,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-12-02 16:34:33,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 146. [2023-12-02 16:34:33,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 91 states have (on average 1.1758241758241759) internal successors, (107), 91 states have internal predecessors, (107), 48 states have call successors, (48), 6 states have call predecessors, (48), 6 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-02 16:34:33,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 203 transitions. [2023-12-02 16:34:33,387 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 203 transitions. Word has length 102 [2023-12-02 16:34:33,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:34:33,388 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 203 transitions. [2023-12-02 16:34:33,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 16:34:33,388 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 203 transitions. [2023-12-02 16:34:33,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-02 16:34:33,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:34:33,390 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:33,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-02 16:34:33,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/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 16:34:33,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2023-12-02 16:34:33,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/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=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 16:34:33,996 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:34:33,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:34:33,997 INFO L85 PathProgramCache]: Analyzing trace with hash -201389642, now seen corresponding path program 1 times [2023-12-02 16:34:33,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:34:33,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1280038344] [2023-12-02 16:34:33,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:34:33,997 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:34:33,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:34:33,998 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/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 16:34:33,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb5a5b5-9827-4629-8106-a4d98d217d97/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 16:34:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:34:34,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 16:34:34,271 INFO L285 TraceCheckSpWp]: Computing forward predicates...