./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-30.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-30.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire --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 14263a7f5b9de37c93df4817d1a8be828f9a9f73581f135551b120fdb5e36320 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:16:45,036 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:16:45,163 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:16:45,168 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:16:45,169 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:16:45,195 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:16:45,196 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:16:45,197 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:16:45,198 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:16:45,198 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:16:45,199 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:16:45,200 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:16:45,201 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:16:45,202 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:16:45,202 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:16:45,203 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:16:45,204 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:16:45,204 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:16:45,205 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:16:45,206 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:16:45,206 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:16:45,207 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:16:45,208 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:16:45,209 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:16:45,209 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:16:45,210 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:16:45,210 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:16:45,211 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:16:45,211 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:16:45,212 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:16:45,212 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:16:45,213 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:16:45,213 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:16:45,214 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:16:45,214 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:16:45,215 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:16:45,215 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:16:45,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:16:45,216 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:16:45,216 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:16:45,216 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:16:45,217 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:16:45,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:16:45,217 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:16:45,218 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:16:45,218 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:16:45,218 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:16:45,219 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_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14263a7f5b9de37c93df4817d1a8be828f9a9f73581f135551b120fdb5e36320 [2023-11-23 21:16:45,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:16:45,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:16:45,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:16:45,613 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:16:45,614 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:16:45,615 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-30.i [2023-11-23 21:16:48,743 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:16:49,026 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:16:49,027 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-30.i [2023-11-23 21:16:49,037 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/data/426be213f/adb4d067592f4dce93529f396e0bcff7/FLAG0893e8686 [2023-11-23 21:16:49,054 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/data/426be213f/adb4d067592f4dce93529f396e0bcff7 [2023-11-23 21:16:49,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:16:49,061 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:16:49,065 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:16:49,065 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:16:49,071 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:16:49,072 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:16:49" (1/1) ... [2023-11-23 21:16:49,073 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e7e1e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:49, skipping insertion in model container [2023-11-23 21:16:49,074 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:16:49" (1/1) ... [2023-11-23 21:16:49,101 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:16:49,255 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_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-30.i[915,928] [2023-11-23 21:16:49,293 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:16:49,306 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:16:49,319 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_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-30.i[915,928] [2023-11-23 21:16:49,337 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:16:49,354 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:16:49,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:49 WrapperNode [2023-11-23 21:16:49,355 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:16:49,356 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:16:49,356 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:16:49,357 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:16:49,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:49" (1/1) ... [2023-11-23 21:16:49,374 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:49" (1/1) ... [2023-11-23 21:16:49,406 INFO L138 Inliner]: procedures = 26, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 87 [2023-11-23 21:16:49,407 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:16:49,408 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:16:49,408 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:16:49,408 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:16:49,418 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:49" (1/1) ... [2023-11-23 21:16:49,419 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:49" (1/1) ... [2023-11-23 21:16:49,421 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:49" (1/1) ... [2023-11-23 21:16:49,422 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:49" (1/1) ... [2023-11-23 21:16:49,436 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:49" (1/1) ... [2023-11-23 21:16:49,453 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:49" (1/1) ... [2023-11-23 21:16:49,455 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:49" (1/1) ... [2023-11-23 21:16:49,457 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:49" (1/1) ... [2023-11-23 21:16:49,460 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:16:49,461 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:16:49,469 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:16:49,469 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:16:49,470 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:49" (1/1) ... [2023-11-23 21:16:49,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:16:49,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:49,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:16:49,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:16:49,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:16:49,552 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:16:49,552 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:16:49,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:16:49,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:16:49,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:16:49,647 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:16:49,650 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:16:50,006 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:16:50,127 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:16:50,127 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:16:50,129 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:16:50 BoogieIcfgContainer [2023-11-23 21:16:50,129 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:16:50,132 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:16:50,136 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:16:50,140 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:16:50,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:16:49" (1/3) ... [2023-11-23 21:16:50,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11115d91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:16:50, skipping insertion in model container [2023-11-23 21:16:50,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:49" (2/3) ... [2023-11-23 21:16:50,142 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11115d91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:16:50, skipping insertion in model container [2023-11-23 21:16:50,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:16:50" (3/3) ... [2023-11-23 21:16:50,143 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-30.i [2023-11-23 21:16:50,179 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:16:50,179 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:16:50,248 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:16:50,255 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;@1022015c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:16:50,256 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:16:50,261 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-23 21:16:50,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-23 21:16:50,276 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:50,278 INFO L195 NwaCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:50,279 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:50,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:50,290 INFO L85 PathProgramCache]: Analyzing trace with hash -578140591, now seen corresponding path program 1 times [2023-11-23 21:16:50,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:50,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997394401] [2023-11-23 21:16:50,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:50,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:50,488 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:16:50,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510145640] [2023-11-23 21:16:50,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:50,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:50,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:50,493 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:16:50,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:16:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:16:50,750 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:16:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:16:50,938 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:16:50,941 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:16:50,943 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:16:50,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:16:51,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 21:16:51,157 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:16:51,161 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:16:51,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:16:51 BoogieIcfgContainer [2023-11-23 21:16:51,212 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:16:51,213 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:16:51,213 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:16:51,213 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:16:51,214 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:16:50" (3/4) ... [2023-11-23 21:16:51,216 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:16:51,217 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:16:51,218 INFO L158 Benchmark]: Toolchain (without parser) took 2159.48ms. Allocated memory was 138.4MB in the beginning and 172.0MB in the end (delta: 33.6MB). Free memory was 108.6MB in the beginning and 120.5MB in the end (delta: -11.9MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. [2023-11-23 21:16:51,219 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 138.4MB. Free memory was 98.1MB in the beginning and 98.0MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:16:51,219 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.72ms. Allocated memory is still 138.4MB. Free memory was 108.3MB in the beginning and 96.4MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:16:51,220 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.78ms. Allocated memory is still 138.4MB. Free memory was 96.4MB in the beginning and 93.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:16:51,221 INFO L158 Benchmark]: Boogie Preprocessor took 52.72ms. Allocated memory is still 138.4MB. Free memory was 93.9MB in the beginning and 92.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:16:51,221 INFO L158 Benchmark]: RCFGBuilder took 667.99ms. Allocated memory is still 138.4MB. Free memory was 92.2MB in the beginning and 69.8MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-23 21:16:51,222 INFO L158 Benchmark]: TraceAbstraction took 1080.64ms. Allocated memory was 138.4MB in the beginning and 172.0MB in the end (delta: 33.6MB). Free memory was 69.0MB in the beginning and 121.4MB in the end (delta: -52.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:16:51,223 INFO L158 Benchmark]: Witness Printer took 3.91ms. Allocated memory is still 172.0MB. Free memory was 121.4MB in the beginning and 120.5MB in the end (delta: 873.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:16:51,227 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 138.4MB. Free memory was 98.1MB in the beginning and 98.0MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 290.72ms. Allocated memory is still 138.4MB. Free memory was 108.3MB in the beginning and 96.4MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.78ms. Allocated memory is still 138.4MB. Free memory was 96.4MB in the beginning and 93.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.72ms. Allocated memory is still 138.4MB. Free memory was 93.9MB in the beginning and 92.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 667.99ms. Allocated memory is still 138.4MB. Free memory was 92.2MB in the beginning and 69.8MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 1080.64ms. Allocated memory was 138.4MB in the beginning and 172.0MB in the end (delta: 33.6MB). Free memory was 69.0MB in the beginning and 121.4MB in the end (delta: -52.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.91ms. Allocated memory is still 172.0MB. Free memory was 121.4MB in the beginning and 120.5MB in the end (delta: 873.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 82. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 64; [L23] unsigned char var_1_2 = 0; [L24] signed short int var_1_5 = 8; [L25] signed short int var_1_6 = -32; [L26] unsigned char var_1_7 = 100; [L27] signed long int var_1_8 = 32; [L28] float var_1_10 = 255.3; [L29] float var_1_13 = 2.8; [L30] signed long int last_1_var_1_8 = 32; [L86] isInitial = 1 [L87] FCALL initially() [L88] COND TRUE 1 [L89] CALL updateLastVariables() [L79] last_1_var_1_8 = var_1_8 [L89] RET updateLastVariables() [L90] CALL updateVariables() [L61] var_1_2 = __VERIFIER_nondet_uchar() [L62] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_5=8, var_1_6=-32, var_1_7=100, var_1_8=32] [L20] COND FALSE !(!cond) [L62] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_5=8, var_1_6=-32, var_1_7=100, var_1_8=32] [L63] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=8, var_1_6=-32, var_1_7=100, var_1_8=32] [L20] COND FALSE !(!cond) [L63] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=8, var_1_6=-32, var_1_7=100, var_1_8=32] [L64] var_1_5 = __VERIFIER_nondet_short() [L65] CALL assume_abort_if_not(var_1_5 >= -32768) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=30, var_1_6=-32, var_1_7=100, var_1_8=32] [L20] COND FALSE !(!cond) [L65] RET assume_abort_if_not(var_1_5 >= -32768) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=30, var_1_6=-32, var_1_7=100, var_1_8=32] [L66] CALL assume_abort_if_not(var_1_5 <= 32767) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=30, var_1_6=-32, var_1_7=100, var_1_8=32] [L20] COND FALSE !(!cond) [L66] RET assume_abort_if_not(var_1_5 <= 32767) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=30, var_1_6=-32, var_1_7=100, var_1_8=32] [L67] CALL assume_abort_if_not(var_1_5 != 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=30, var_1_6=-32, var_1_7=100, var_1_8=32] [L20] COND FALSE !(!cond) [L67] RET assume_abort_if_not(var_1_5 != 0) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=30, var_1_6=-32, var_1_7=100, var_1_8=32] [L68] var_1_6 = __VERIFIER_nondet_short() [L69] CALL assume_abort_if_not(var_1_6 >= -32768) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=30, var_1_6=4, var_1_7=100, var_1_8=32] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_6 >= -32768) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=30, var_1_6=4, var_1_7=100, var_1_8=32] [L70] CALL assume_abort_if_not(var_1_6 <= 32767) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=30, var_1_6=4, var_1_7=100, var_1_8=32] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not(var_1_6 <= 32767) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=30, var_1_6=4, var_1_7=100, var_1_8=32] [L71] CALL assume_abort_if_not(var_1_6 != 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=30, var_1_6=4, var_1_7=100, var_1_8=32] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_6 != 0) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=30, var_1_6=4, var_1_7=100, var_1_8=32] [L72] var_1_7 = __VERIFIER_nondet_uchar() [L73] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=30, var_1_6=4, var_1_8=32] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=30, var_1_6=4, var_1_8=32] [L74] CALL assume_abort_if_not(var_1_7 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=30, var_1_6=4, var_1_7=29, var_1_8=32] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_7 <= 254) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=30, var_1_6=4, var_1_7=29, var_1_8=32] [L75] var_1_13 = __VERIFIER_nondet_float() [L76] CALL assume_abort_if_not((var_1_13 >= -922337.2036854765600e+13F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854765600e+12F && var_1_13 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_1=64, var_1_2=1, var_1_5=30, var_1_6=4, var_1_7=29, var_1_8=32] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not((var_1_13 >= -922337.2036854765600e+13F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854765600e+12F && var_1_13 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_1=64, var_1_2=1, var_1_5=30, var_1_6=4, var_1_7=29, var_1_8=32] [L90] RET updateVariables() [L91] CALL step() [L34] signed long int stepLocal_0 = (last_1_var_1_8 / var_1_5) % var_1_6; [L35] COND TRUE \read(var_1_2) [L36] COND TRUE last_1_var_1_8 > stepLocal_0 [L37] var_1_1 = var_1_7 [L42] unsigned char stepLocal_1 = var_1_1; [L43] COND TRUE stepLocal_1 < var_1_5 [L44] var_1_8 = (var_1_1 - ((((var_1_7) < (var_1_1)) ? (var_1_7) : (var_1_1)))) [L48] COND FALSE !(((var_1_6 * var_1_8) * var_1_7) <= (var_1_8 - var_1_1)) [L53] COND TRUE var_1_1 >= var_1_1 [L54] var_1_10 = var_1_13 [L91] RET step() [L92] CALL, EXPR property() [L82-L83] return ((var_1_2 ? ((last_1_var_1_8 > ((last_1_var_1_8 / var_1_5) % var_1_6)) ? (var_1_1 == ((unsigned char) var_1_7)) : 1) : (var_1_1 == ((unsigned char) var_1_7))) && ((var_1_1 < var_1_5) ? (var_1_8 == ((signed long int) (var_1_1 - ((((var_1_7) < (var_1_1)) ? (var_1_7) : (var_1_1)))))) : (var_1_8 == ((signed long int) var_1_7)))) && ((((var_1_6 * var_1_8) * var_1_7) <= (var_1_8 - var_1_1)) ? ((var_1_5 <= (var_1_8 + var_1_8)) ? (var_1_10 == ((float) var_1_13)) : 1) : ((var_1_1 >= var_1_1) ? (var_1_10 == ((float) var_1_13)) : (var_1_10 == ((float) var_1_13)))) ; [L92] RET, EXPR property() [L92] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_8=32, var_1_10=2, var_1_13=2, var_1_1=29, var_1_2=1, var_1_5=30, var_1_6=4, var_1_7=29, var_1_8=0] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_8=32, var_1_10=2, var_1_13=2, var_1_1=29, var_1_2=1, var_1_5=30, var_1_6=4, var_1_7=29, var_1_8=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 11, 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=25occurred 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, 42 NumberOfCodeBlocks, 42 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 [2023-11-23 21:16:51,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/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_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-30.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire --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 14263a7f5b9de37c93df4817d1a8be828f9a9f73581f135551b120fdb5e36320 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:16:53,991 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:16:54,113 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 21:16:54,123 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:16:54,124 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:16:54,178 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:16:54,179 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:16:54,180 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:16:54,181 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:16:54,186 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:16:54,187 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:16:54,188 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:16:54,188 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:16:54,190 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:16:54,191 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:16:54,191 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:16:54,192 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:16:54,193 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:16:54,193 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:16:54,195 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:16:54,195 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:16:54,196 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:16:54,196 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:16:54,197 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:16:54,197 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:16:54,197 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:16:54,198 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:16:54,199 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:16:54,199 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:16:54,200 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:16:54,201 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:16:54,201 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:16:54,202 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:16:54,202 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:16:54,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:16:54,203 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:16:54,203 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:16:54,203 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:16:54,204 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:16:54,205 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:16:54,205 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:16:54,205 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:16:54,206 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:16:54,206 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:16:54,207 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_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14263a7f5b9de37c93df4817d1a8be828f9a9f73581f135551b120fdb5e36320 [2023-11-23 21:16:54,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:16:54,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:16:54,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:16:54,688 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:16:54,689 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:16:54,690 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-30.i [2023-11-23 21:16:57,899 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:16:58,187 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:16:58,187 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-30.i [2023-11-23 21:16:58,197 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/data/73d577748/f1a563b7f6e94e2d935e31680df98b79/FLAG5584fac2c [2023-11-23 21:16:58,211 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/data/73d577748/f1a563b7f6e94e2d935e31680df98b79 [2023-11-23 21:16:58,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:16:58,215 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:16:58,217 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:16:58,218 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:16:58,223 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:16:58,224 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:16:58" (1/1) ... [2023-11-23 21:16:58,225 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@297805f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58, skipping insertion in model container [2023-11-23 21:16:58,226 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:16:58" (1/1) ... [2023-11-23 21:16:58,253 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:16:58,435 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_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-30.i[915,928] [2023-11-23 21:16:58,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:16:58,529 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:16:58,548 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_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-30.i[915,928] [2023-11-23 21:16:58,580 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:16:58,609 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:16:58,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58 WrapperNode [2023-11-23 21:16:58,609 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:16:58,611 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:16:58,611 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:16:58,611 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:16:58,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58" (1/1) ... [2023-11-23 21:16:58,645 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58" (1/1) ... [2023-11-23 21:16:58,679 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 85 [2023-11-23 21:16:58,680 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:16:58,681 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:16:58,682 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:16:58,682 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:16:58,692 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58" (1/1) ... [2023-11-23 21:16:58,692 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58" (1/1) ... [2023-11-23 21:16:58,703 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58" (1/1) ... [2023-11-23 21:16:58,704 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58" (1/1) ... [2023-11-23 21:16:58,727 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58" (1/1) ... [2023-11-23 21:16:58,736 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58" (1/1) ... [2023-11-23 21:16:58,740 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58" (1/1) ... [2023-11-23 21:16:58,747 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58" (1/1) ... [2023-11-23 21:16:58,751 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:16:58,757 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:16:58,757 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:16:58,757 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:16:58,758 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58" (1/1) ... [2023-11-23 21:16:58,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:16:58,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:58,807 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:16:58,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:16:58,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:16:58,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:16:58,853 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:16:58,853 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:16:58,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:16:58,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:16:58,939 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:16:58,942 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:16:59,580 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:16:59,617 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:16:59,617 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:16:59,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:16:59 BoogieIcfgContainer [2023-11-23 21:16:59,618 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:16:59,620 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:16:59,621 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:16:59,624 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:16:59,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:16:58" (1/3) ... [2023-11-23 21:16:59,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dcc1700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:16:59, skipping insertion in model container [2023-11-23 21:16:59,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:58" (2/3) ... [2023-11-23 21:16:59,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dcc1700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:16:59, skipping insertion in model container [2023-11-23 21:16:59,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:16:59" (3/3) ... [2023-11-23 21:16:59,634 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-30.i [2023-11-23 21:16:59,654 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:16:59,654 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:16:59,704 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:16:59,711 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;@3a5e8f90, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:16:59,711 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:16:59,715 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-23 21:16:59,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-23 21:16:59,730 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:59,731 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:59,734 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:59,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:59,743 INFO L85 PathProgramCache]: Analyzing trace with hash 624855087, now seen corresponding path program 1 times [2023-11-23 21:16:59,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:16:59,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593553254] [2023-11-23 21:16:59,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:59,768 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 [2023-11-23 21:16:59,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:16:59,771 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:16:59,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:17:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:00,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:17:00,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:00,102 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-23 21:17:00,102 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:17:00,103 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:17:00,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593553254] [2023-11-23 21:17:00,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593553254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:17:00,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:17:00,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:17:00,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776826035] [2023-11-23 21:17:00,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:17:00,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:17:00,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:17:00,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:17:00,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:17:00,145 INFO L87 Difference]: Start difference. First operand has 36 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 21:17:00,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:00,274 INFO L93 Difference]: Finished difference Result 69 states and 119 transitions. [2023-11-23 21:17:00,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:17:00,286 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 70 [2023-11-23 21:17:00,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:00,293 INFO L225 Difference]: With dead ends: 69 [2023-11-23 21:17:00,294 INFO L226 Difference]: Without dead ends: 34 [2023-11-23 21:17:00,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:17:00,301 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:00,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:17:00,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-23 21:17:00,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-11-23 21:17:00,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-23 21:17:00,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2023-11-23 21:17:00,346 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 70 [2023-11-23 21:17:00,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:00,347 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2023-11-23 21:17:00,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 21:17:00,347 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2023-11-23 21:17:00,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-23 21:17:00,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:00,351 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:17:00,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/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)] Ended with exit code 0 [2023-11-23 21:17:00,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:17:00,554 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:00,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:00,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1704056433, now seen corresponding path program 1 times [2023-11-23 21:17:00,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:17:00,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362317338] [2023-11-23 21:17:00,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:00,556 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 [2023-11-23 21:17:00,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:17:00,558 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:17:00,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:17:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:00,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:17:00,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:01,399 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 114 proven. 18 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-23 21:17:01,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:17:01,922 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-23 21:17:01,922 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:17:01,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1362317338] [2023-11-23 21:17:01,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1362317338] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 21:17:01,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:17:01,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-23 21:17:01,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501335694] [2023-11-23 21:17:01,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:17:01,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:17:01,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:17:01,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:17:01,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:17:01,928 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 21:17:03,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:03,361 INFO L93 Difference]: Finished difference Result 123 states and 165 transitions. [2023-11-23 21:17:03,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:17:03,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 70 [2023-11-23 21:17:03,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:03,368 INFO L225 Difference]: With dead ends: 123 [2023-11-23 21:17:03,368 INFO L226 Difference]: Without dead ends: 90 [2023-11-23 21:17:03,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-11-23 21:17:03,370 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 76 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:03,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 132 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 21:17:03,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-23 21:17:03,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 51. [2023-11-23 21:17:03,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 36 states have internal predecessors, (46), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:17:03,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 72 transitions. [2023-11-23 21:17:03,408 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 72 transitions. Word has length 70 [2023-11-23 21:17:03,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:03,410 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 72 transitions. [2023-11-23 21:17:03,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 21:17:03,411 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 72 transitions. [2023-11-23 21:17:03,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-23 21:17:03,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:03,413 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:17:03,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:17:03,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:17:03,623 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:03,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:03,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1704116015, now seen corresponding path program 1 times [2023-11-23 21:17:03,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:17:03,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174487333] [2023-11-23 21:17:03,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:03,625 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 [2023-11-23 21:17:03,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:17:03,627 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:17:03,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a849d9-d3c5-460c-aec5-0577b0b9ef19/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:17:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:03,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-23 21:17:03,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:09,511 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 114 proven. 18 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-23 21:17:09,514 INFO L327 TraceCheckSpWp]: Computing backward predicates...