./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-93.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-93.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91 --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 f01803fb0f4402adea224acc3f7b69fb2efec828f8f728a37b5dbc3d362b16ca --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:07:20,032 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:07:20,158 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-25 00:07:20,168 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:07:20,169 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:07:20,211 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:07:20,212 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:07:20,213 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:07:20,214 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:07:20,219 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:07:20,220 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:07:20,221 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:07:20,222 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:07:20,224 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:07:20,224 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:07:20,225 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:07:20,225 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:07:20,226 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:07:20,227 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:07:20,227 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:07:20,228 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:07:20,228 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:07:20,230 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:07:20,230 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:07:20,231 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:07:20,231 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:07:20,232 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:07:20,232 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:07:20,233 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:07:20,233 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:07:20,235 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:07:20,235 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:07:20,236 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:07:20,236 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:07:20,236 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:07:20,237 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:07:20,237 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:07:20,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:07:20,238 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:07:20,238 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:07:20,239 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:07:20,239 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:07:20,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:07:20,240 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:07:20,241 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:07:20,241 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:07:20,241 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:07:20,242 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_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f01803fb0f4402adea224acc3f7b69fb2efec828f8f728a37b5dbc3d362b16ca [2023-11-25 00:07:20,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:07:20,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:07:20,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:07:20,678 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:07:20,678 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:07:20,680 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-93.i [2023-11-25 00:07:23,737 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:07:23,944 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:07:23,945 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-93.i [2023-11-25 00:07:23,957 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/data/1b8b61b52/11fbfcdb3fc3457197840a947533a6f0/FLAG347646cd4 [2023-11-25 00:07:23,970 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/data/1b8b61b52/11fbfcdb3fc3457197840a947533a6f0 [2023-11-25 00:07:23,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:07:23,974 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:07:23,976 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:07:23,976 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:07:24,010 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:07:24,011 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:07:23" (1/1) ... [2023-11-25 00:07:24,011 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ff2baeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:24, skipping insertion in model container [2023-11-25 00:07:24,012 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:07:23" (1/1) ... [2023-11-25 00:07:24,037 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:07:24,192 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_9530fe8b-5efe-4c01-a672-cfc2bec94f30/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-93.i[915,928] [2023-11-25 00:07:24,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:07:24,244 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:07:24,255 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_9530fe8b-5efe-4c01-a672-cfc2bec94f30/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-93.i[915,928] [2023-11-25 00:07:24,278 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:07:24,292 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:07:24,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:24 WrapperNode [2023-11-25 00:07:24,293 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:07:24,293 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:07:24,294 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:07:24,294 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:07:24,300 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:24" (1/1) ... [2023-11-25 00:07:24,308 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:24" (1/1) ... [2023-11-25 00:07:24,339 INFO L138 Inliner]: procedures = 26, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 117 [2023-11-25 00:07:24,340 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:07:24,340 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:07:24,340 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:07:24,341 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:07:24,350 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:24" (1/1) ... [2023-11-25 00:07:24,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:24" (1/1) ... [2023-11-25 00:07:24,353 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:24" (1/1) ... [2023-11-25 00:07:24,354 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:24" (1/1) ... [2023-11-25 00:07:24,363 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:24" (1/1) ... [2023-11-25 00:07:24,367 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:24" (1/1) ... [2023-11-25 00:07:24,369 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:24" (1/1) ... [2023-11-25 00:07:24,371 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:24" (1/1) ... [2023-11-25 00:07:24,374 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:07:24,375 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:07:24,375 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:07:24,375 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:07:24,376 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:24" (1/1) ... [2023-11-25 00:07:24,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:07:24,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:07:24,429 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:07:24,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:07:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:07:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-25 00:07:24,486 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-25 00:07:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:07:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:07:24,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:07:24,607 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:07:24,609 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:07:24,877 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:07:25,029 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:07:25,030 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-25 00:07:25,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:07:25 BoogieIcfgContainer [2023-11-25 00:07:25,032 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:07:25,035 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:07:25,035 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:07:25,039 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:07:25,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:07:23" (1/3) ... [2023-11-25 00:07:25,040 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6a6faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:07:25, skipping insertion in model container [2023-11-25 00:07:25,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:24" (2/3) ... [2023-11-25 00:07:25,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6a6faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:07:25, skipping insertion in model container [2023-11-25 00:07:25,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:07:25" (3/3) ... [2023-11-25 00:07:25,042 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-93.i [2023-11-25 00:07:25,063 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:07:25,063 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:07:25,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:07:25,115 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;@41d055a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:07:25,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:07:25,119 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-25 00:07:25,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-25 00:07:25,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:07:25,130 INFO L195 NwaCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:07:25,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:07:25,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:07:25,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1956563628, now seen corresponding path program 1 times [2023-11-25 00:07:25,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:07:25,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119864585] [2023-11-25 00:07:25,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:07:25,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:07:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:07:25,417 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-25 00:07:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:07:25,646 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-25 00:07:25,648 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-25 00:07:25,649 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-25 00:07:25,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:07:25,657 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-25 00:07:25,668 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-25 00:07:25,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 12:07:25 BoogieIcfgContainer [2023-11-25 00:07:25,775 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-25 00:07:25,778 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-25 00:07:25,778 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-25 00:07:25,778 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-25 00:07:25,779 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:07:25" (3/4) ... [2023-11-25 00:07:25,783 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-25 00:07:25,785 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-25 00:07:25,786 INFO L158 Benchmark]: Toolchain (without parser) took 1811.67ms. Allocated memory was 132.1MB in the beginning and 174.1MB in the end (delta: 41.9MB). Free memory was 65.2MB in the beginning and 93.0MB in the end (delta: -27.7MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2023-11-25 00:07:25,787 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 132.1MB. Free memory is still 104.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:07:25,788 INFO L158 Benchmark]: CACSL2BoogieTranslator took 316.97ms. Allocated memory was 132.1MB in the beginning and 174.1MB in the end (delta: 41.9MB). Free memory was 65.0MB in the beginning and 138.9MB in the end (delta: -73.9MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2023-11-25 00:07:25,789 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.28ms. Allocated memory is still 174.1MB. Free memory was 138.9MB in the beginning and 136.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-25 00:07:25,796 INFO L158 Benchmark]: Boogie Preprocessor took 33.55ms. Allocated memory is still 174.1MB. Free memory was 136.9MB in the beginning and 134.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-25 00:07:25,796 INFO L158 Benchmark]: RCFGBuilder took 657.13ms. Allocated memory is still 174.1MB. Free memory was 134.7MB in the beginning and 123.4MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-25 00:07:25,798 INFO L158 Benchmark]: TraceAbstraction took 740.55ms. Allocated memory is still 174.1MB. Free memory was 122.3MB in the beginning and 93.0MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-25 00:07:25,799 INFO L158 Benchmark]: Witness Printer took 7.04ms. Allocated memory is still 174.1MB. Free memory is still 93.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:07:25,809 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 132.1MB. Free memory is still 104.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 316.97ms. Allocated memory was 132.1MB in the beginning and 174.1MB in the end (delta: 41.9MB). Free memory was 65.0MB in the beginning and 138.9MB in the end (delta: -73.9MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.28ms. Allocated memory is still 174.1MB. Free memory was 138.9MB in the beginning and 136.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.55ms. Allocated memory is still 174.1MB. Free memory was 136.9MB in the beginning and 134.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 657.13ms. Allocated memory is still 174.1MB. Free memory was 134.7MB in the beginning and 123.4MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 740.55ms. Allocated memory is still 174.1MB. Free memory was 122.3MB in the beginning and 93.0MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 7.04ms. Allocated memory is still 174.1MB. Free memory is still 93.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 41, overapproximation of someBinaryFLOATComparisonOperation at line 50, overapproximation of someUnaryDOUBLEoperation at line 23. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] float var_1_1 = 255.3; [L23] double var_1_3 = -0.9; [L24] double var_1_4 = 2.6; [L25] double var_1_5 = 128.5; [L26] float var_1_7 = 1.25; [L27] unsigned char var_1_8 = 0; [L28] unsigned char var_1_9 = 1; [L29] unsigned char var_1_10 = 0; [L30] signed char var_1_11 = -1; [L31] signed char var_1_12 = -10; [L32] signed char var_1_13 = -32; [L33] signed char var_1_14 = -2; [L34] unsigned long int var_1_15 = 500; [L35] unsigned long int var_1_16 = 16; [L36] float last_1_var_1_1 = 255.3; [L37] unsigned char last_1_var_1_8 = 0; [L105] isInitial = 1 [L106] FCALL initially() [L107] COND TRUE 1 [L108] CALL updateLastVariables() [L97] last_1_var_1_1 = var_1_1 [L98] last_1_var_1_8 = var_1_8 [L108] RET updateLastVariables() [L109] CALL updateVariables() [L67] var_1_3 = __VERIFIER_nondet_double() [L68] CALL assume_abort_if_not((var_1_3 >= -922337.2036854776000e+13F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 9223372.036854776000e+12F && var_1_3 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-10, var_1_13=-32, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_4=13/5, var_1_5=257/2, var_1_7=5/4, var_1_8=0, var_1_9=1] [L20] COND FALSE !(!cond) [L68] RET assume_abort_if_not((var_1_3 >= -922337.2036854776000e+13F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 9223372.036854776000e+12F && var_1_3 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-10, var_1_13=-32, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_4=13/5, var_1_5=257/2, var_1_7=5/4, var_1_8=0, var_1_9=1] [L69] CALL assume_abort_if_not(var_1_3 != 0.0F) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-10, var_1_13=-32, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_4=13/5, var_1_5=257/2, var_1_7=5/4, var_1_8=0, var_1_9=1] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_3 != 0.0F) VAL [isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-10, var_1_13=-32, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_4=13/5, var_1_5=257/2, var_1_7=5/4, var_1_8=0, var_1_9=1] [L70] var_1_4 = __VERIFIER_nondet_double() [L71] CALL assume_abort_if_not((var_1_4 >= -922337.2036854776000e+13F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 9223372.036854776000e+12F && var_1_4 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-10, var_1_13=-32, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_5=257/2, var_1_7=5/4, var_1_8=0, var_1_9=1] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not((var_1_4 >= -922337.2036854776000e+13F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 9223372.036854776000e+12F && var_1_4 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-10, var_1_13=-32, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_5=257/2, var_1_7=5/4, var_1_8=0, var_1_9=1] [L72] var_1_5 = __VERIFIER_nondet_double() [L73] CALL assume_abort_if_not((var_1_5 >= -922337.2036854776000e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854776000e+12F && var_1_5 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-10, var_1_13=-32, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_7=5/4, var_1_8=0, var_1_9=1] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not((var_1_5 >= -922337.2036854776000e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854776000e+12F && var_1_5 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-10, var_1_13=-32, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_7=5/4, var_1_8=0, var_1_9=1] [L74] CALL assume_abort_if_not(var_1_5 != 0.0F) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-10, var_1_13=-32, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_7=5/4, var_1_8=0, var_1_9=1] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_5 != 0.0F) VAL [isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-10, var_1_13=-32, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_7=5/4, var_1_8=0, var_1_9=1] [L75] var_1_7 = __VERIFIER_nondet_float() [L76] CALL assume_abort_if_not((var_1_7 >= -922337.2036854765600e+13F && var_1_7 <= -1.0e-20F) || (var_1_7 <= 9223372.036854765600e+12F && var_1_7 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-10, var_1_13=-32, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_8=0, var_1_9=1] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not((var_1_7 >= -922337.2036854765600e+13F && var_1_7 <= -1.0e-20F) || (var_1_7 <= 9223372.036854765600e+12F && var_1_7 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-10, var_1_13=-32, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_8=0, var_1_9=1] [L77] var_1_9 = __VERIFIER_nondet_uchar() [L78] CALL assume_abort_if_not(var_1_9 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-10, var_1_13=-32, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_8=0, var_1_9=1] [L20] COND FALSE !(!cond) [L78] RET assume_abort_if_not(var_1_9 >= 1) VAL [isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-10, var_1_13=-32, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_8=0, var_1_9=1] [L79] CALL assume_abort_if_not(var_1_9 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-10, var_1_13=-32, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_8=0, var_1_9=1] [L20] COND FALSE !(!cond) [L79] RET assume_abort_if_not(var_1_9 <= 1) VAL [isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-10, var_1_13=-32, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_8=0, var_1_9=1] [L80] var_1_10 = __VERIFIER_nondet_uchar() [L81] CALL assume_abort_if_not(var_1_10 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_11=-1, var_1_12=-10, var_1_13=-32, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_8=0, var_1_9=1] [L20] COND FALSE !(!cond) [L81] RET assume_abort_if_not(var_1_10 >= 0) VAL [isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_11=-1, var_1_12=-10, var_1_13=-32, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_8=0, var_1_9=1] [L82] CALL assume_abort_if_not(var_1_10 <= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-10, var_1_13=-32, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_8=0, var_1_9=1] [L20] COND FALSE !(!cond) [L82] RET assume_abort_if_not(var_1_10 <= 0) VAL [isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-10, var_1_13=-32, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_8=0, var_1_9=1] [L83] var_1_12 = __VERIFIER_nondet_char() [L84] CALL assume_abort_if_not(var_1_12 >= -127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-126, var_1_13=-32, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_8=0, var_1_9=1] [L20] COND FALSE !(!cond) [L84] RET assume_abort_if_not(var_1_12 >= -127) VAL [isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-126, var_1_13=-32, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_8=0, var_1_9=1] [L85] CALL assume_abort_if_not(var_1_12 <= 126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-126, var_1_13=-32, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_8=0, var_1_9=1] [L20] COND FALSE !(!cond) [L85] RET assume_abort_if_not(var_1_12 <= 126) VAL [isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-126, var_1_13=-32, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_8=0, var_1_9=1] [L86] var_1_13 = __VERIFIER_nondet_char() [L87] CALL assume_abort_if_not(var_1_13 >= -63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-126, var_1_13=-63, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_8=0, var_1_9=1] [L20] COND FALSE !(!cond) [L87] RET assume_abort_if_not(var_1_13 >= -63) VAL [isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-126, var_1_13=-63, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_8=0, var_1_9=1] [L88] CALL assume_abort_if_not(var_1_13 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-126, var_1_13=-63, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_8=0, var_1_9=1] [L20] COND FALSE !(!cond) [L88] RET assume_abort_if_not(var_1_13 <= 63) VAL [isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-126, var_1_13=-63, var_1_14=-2, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_8=0, var_1_9=1] [L89] var_1_14 = __VERIFIER_nondet_char() [L90] CALL assume_abort_if_not(var_1_14 >= -63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-126, var_1_13=-63, var_1_14=-63, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_8=0, var_1_9=1] [L20] COND FALSE !(!cond) [L90] RET assume_abort_if_not(var_1_14 >= -63) VAL [isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-126, var_1_13=-63, var_1_14=-63, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_8=0, var_1_9=1] [L91] CALL assume_abort_if_not(var_1_14 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-126, var_1_13=-63, var_1_14=-63, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_8=0, var_1_9=1] [L20] COND FALSE !(!cond) [L91] RET assume_abort_if_not(var_1_14 <= 63) VAL [isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-126, var_1_13=-63, var_1_14=-63, var_1_15=500, var_1_16=16, var_1_1=2553/10, var_1_8=0, var_1_9=1] [L92] var_1_16 = __VERIFIER_nondet_ulong() [L93] CALL assume_abort_if_not(var_1_16 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-126, var_1_13=-63, var_1_14=-63, var_1_15=500, var_1_1=2553/10, var_1_8=0, var_1_9=1] [L20] COND FALSE !(!cond) [L93] RET assume_abort_if_not(var_1_16 >= 0) VAL [isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-126, var_1_13=-63, var_1_14=-63, var_1_15=500, var_1_1=2553/10, var_1_8=0, var_1_9=1] [L94] CALL assume_abort_if_not(var_1_16 <= 4294967294) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-126, var_1_13=-63, var_1_14=-63, var_1_15=500, var_1_16=4294967294, var_1_1=2553/10, var_1_8=0, var_1_9=1] [L20] COND FALSE !(!cond) [L94] RET assume_abort_if_not(var_1_16 <= 4294967294) VAL [isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-1, var_1_12=-126, var_1_13=-63, var_1_14=-63, var_1_15=500, var_1_16=4294967294, var_1_1=2553/10, var_1_8=0, var_1_9=1] [L109] RET updateVariables() [L110] CALL step() [L41] COND FALSE !(((- last_1_var_1_1) / var_1_3) != (var_1_4 / var_1_5)) [L48] var_1_1 = var_1_7 [L50] COND FALSE !(var_1_1 != var_1_1) [L55] var_1_8 = (! var_1_10) [L57] COND FALSE !(var_1_1 < var_1_1) [L62] var_1_11 = (var_1_13 + var_1_14) [L64] var_1_15 = var_1_16 [L110] RET step() [L111] CALL, EXPR property() [L101-L102] return ((((((- last_1_var_1_1) / var_1_3) != (var_1_4 / var_1_5)) ? (last_1_var_1_8 ? (var_1_1 == ((float) var_1_7)) : (var_1_1 == ((float) var_1_7))) : (var_1_1 == ((float) var_1_7))) && ((var_1_1 != var_1_1) ? ((var_1_1 < (var_1_1 * 15.25)) ? (var_1_8 == ((unsigned char) (! var_1_9))) : 1) : (var_1_8 == ((unsigned char) (! var_1_10))))) && ((var_1_1 < var_1_1) ? (var_1_10 ? (var_1_11 == ((signed char) var_1_12)) : 1) : (var_1_11 == ((signed char) (var_1_13 + var_1_14))))) && (var_1_15 == ((unsigned long int) var_1_16)) ; [L111] RET, EXPR property() [L111] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-126, var_1_12=-126, var_1_13=-63, var_1_14=-63, var_1_15=4294967294, var_1_16=4294967294, var_1_1=505, var_1_7=505, var_1_8=1, var_1_9=1] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_1=2553/10, last_1_var_1_8=0, var_1_10=0, var_1_11=-126, var_1_12=-126, var_1_13=-63, var_1_14=-63, var_1_15=4294967294, var_1_16=4294967294, var_1_1=505, var_1_7=505, var_1_8=1, var_1_9=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 18, 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=37occurred 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, 68 NumberOfCodeBlocks, 68 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 [2023-11-25 00:07:25,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-93.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91 --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 f01803fb0f4402adea224acc3f7b69fb2efec828f8f728a37b5dbc3d362b16ca --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:07:28,531 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:07:28,657 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-25 00:07:28,666 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:07:28,667 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:07:28,725 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:07:28,726 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:07:28,726 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:07:28,727 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:07:28,732 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:07:28,733 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:07:28,733 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:07:28,734 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:07:28,735 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:07:28,736 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:07:28,736 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:07:28,737 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:07:28,738 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:07:28,738 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:07:28,738 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:07:28,739 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:07:28,739 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:07:28,740 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:07:28,740 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:07:28,741 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-25 00:07:28,741 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-25 00:07:28,741 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-25 00:07:28,742 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:07:28,742 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:07:28,742 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:07:28,744 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:07:28,744 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-25 00:07:28,744 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:07:28,745 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:07:28,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:07:28,745 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:07:28,746 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:07:28,746 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:07:28,746 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-25 00:07:28,747 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-25 00:07:28,747 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:07:28,748 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:07:28,748 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:07:28,748 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:07:28,748 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_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f01803fb0f4402adea224acc3f7b69fb2efec828f8f728a37b5dbc3d362b16ca [2023-11-25 00:07:29,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:07:29,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:07:29,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:07:29,192 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:07:29,193 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:07:29,194 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-93.i [2023-11-25 00:07:32,288 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:07:32,635 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:07:32,636 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-93.i [2023-11-25 00:07:32,645 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/data/73aff80b8/eb56f2441956401bb21829a29a7dacc4/FLAG79634939e [2023-11-25 00:07:32,660 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/data/73aff80b8/eb56f2441956401bb21829a29a7dacc4 [2023-11-25 00:07:32,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:07:32,664 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:07:32,666 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:07:32,666 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:07:32,675 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:07:32,676 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:07:32" (1/1) ... [2023-11-25 00:07:32,677 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49add2d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:32, skipping insertion in model container [2023-11-25 00:07:32,677 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:07:32" (1/1) ... [2023-11-25 00:07:32,721 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:07:32,909 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_9530fe8b-5efe-4c01-a672-cfc2bec94f30/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-93.i[915,928] [2023-11-25 00:07:32,986 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:07:33,017 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:07:33,042 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_9530fe8b-5efe-4c01-a672-cfc2bec94f30/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-93.i[915,928] [2023-11-25 00:07:33,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:07:33,116 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:07:33,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:33 WrapperNode [2023-11-25 00:07:33,117 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:07:33,119 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:07:33,119 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:07:33,119 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:07:33,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:33" (1/1) ... [2023-11-25 00:07:33,153 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:33" (1/1) ... [2023-11-25 00:07:33,201 INFO L138 Inliner]: procedures = 27, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 114 [2023-11-25 00:07:33,202 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:07:33,202 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:07:33,203 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:07:33,203 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:07:33,214 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:33" (1/1) ... [2023-11-25 00:07:33,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:33" (1/1) ... [2023-11-25 00:07:33,225 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:33" (1/1) ... [2023-11-25 00:07:33,228 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:33" (1/1) ... [2023-11-25 00:07:33,238 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:33" (1/1) ... [2023-11-25 00:07:33,254 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:33" (1/1) ... [2023-11-25 00:07:33,259 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:33" (1/1) ... [2023-11-25 00:07:33,266 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:33" (1/1) ... [2023-11-25 00:07:33,276 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:07:33,277 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:07:33,277 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:07:33,278 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:07:33,287 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:33" (1/1) ... [2023-11-25 00:07:33,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:07:33,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:07:33,329 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:07:33,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:07:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:07:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-25 00:07:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-25 00:07:33,380 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-25 00:07:33,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:07:33,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:07:33,499 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:07:33,502 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:07:41,805 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:07:41,881 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:07:41,881 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-25 00:07:41,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:07:41 BoogieIcfgContainer [2023-11-25 00:07:41,882 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:07:41,885 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:07:41,885 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:07:41,888 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:07:41,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:07:32" (1/3) ... [2023-11-25 00:07:41,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52558e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:07:41, skipping insertion in model container [2023-11-25 00:07:41,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:33" (2/3) ... [2023-11-25 00:07:41,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52558e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:07:41, skipping insertion in model container [2023-11-25 00:07:41,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:07:41" (3/3) ... [2023-11-25 00:07:41,901 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-93.i [2023-11-25 00:07:41,923 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:07:41,924 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:07:41,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:07:42,002 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;@73e5c7b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:07:42,004 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:07:42,008 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 27 states have internal predecessors, (37), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-25 00:07:42,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-25 00:07:42,028 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:07:42,029 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:07:42,030 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:07:42,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:07:42,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1964301663, now seen corresponding path program 1 times [2023-11-25 00:07:42,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:07:42,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54390609] [2023-11-25 00:07:42,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:07:42,057 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 [2023-11-25 00:07:42,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:07:42,063 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/mathsat -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) [2023-11-25 00:07:42,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-25 00:07:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:07:44,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-25 00:07:44,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:07:44,245 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2023-11-25 00:07:44,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:07:44,247 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:07:44,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54390609] [2023-11-25 00:07:44,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54390609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:07:44,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:07:44,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:07:44,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096941097] [2023-11-25 00:07:44,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:07:44,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-25 00:07:44,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:07:44,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-25 00:07:44,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:07:44,298 INFO L87 Difference]: Start difference. First operand has 47 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 27 states have internal predecessors, (37), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-25 00:07:45,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-25 00:07:45,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:07:45,632 INFO L93 Difference]: Finished difference Result 90 states and 160 transitions. [2023-11-25 00:07:45,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-25 00:07:45,649 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 108 [2023-11-25 00:07:45,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:07:45,656 INFO L225 Difference]: With dead ends: 90 [2023-11-25 00:07:45,656 INFO L226 Difference]: Without dead ends: 44 [2023-11-25 00:07:45,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:07:45,670 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:07:45,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-25 00:07:45,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-25 00:07:45,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-25 00:07:45,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-25 00:07:45,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 65 transitions. [2023-11-25 00:07:45,713 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 65 transitions. Word has length 108 [2023-11-25 00:07:45,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:07:45,714 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 65 transitions. [2023-11-25 00:07:45,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-25 00:07:45,714 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 65 transitions. [2023-11-25 00:07:45,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-25 00:07:45,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:07:45,717 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:07:45,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-25 00:07:45,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:07:45,919 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:07:45,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:07:45,921 INFO L85 PathProgramCache]: Analyzing trace with hash 922576481, now seen corresponding path program 1 times [2023-11-25 00:07:45,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:07:45,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686511346] [2023-11-25 00:07:45,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:07:45,923 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 [2023-11-25 00:07:45,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:07:45,924 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/mathsat -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) [2023-11-25 00:07:45,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9530fe8b-5efe-4c01-a672-cfc2bec94f30/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-25 00:07:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:07:47,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-25 00:07:47,633 INFO L285 TraceCheckSpWp]: Computing forward predicates...