./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-76.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_9c60fe32-de3d-4695-9e40-0ac5e60e1672/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/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_9c60fe32-de3d-4695-9e40-0ac5e60e1672/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-76.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/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_9c60fe32-de3d-4695-9e40-0ac5e60e1672/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 b286836f98ea28c8d142c9f806621ee4793004eb1aab8be8357681e891f9ba79 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:18:38,882 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:18:39,010 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:18:39,024 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:18:39,025 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:18:39,083 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:18:39,088 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:18:39,089 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:18:39,091 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:18:39,097 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:18:39,098 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:18:39,100 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:18:39,101 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:18:39,103 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:18:39,103 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:18:39,104 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:18:39,105 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:18:39,105 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:18:39,106 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:18:39,106 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:18:39,107 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:18:39,108 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:18:39,110 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:18:39,110 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:18:39,111 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:18:39,111 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:18:39,112 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:18:39,113 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:18:39,113 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:18:39,114 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:18:39,115 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:18:39,116 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:18:39,116 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:18:39,117 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:18:39,117 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:18:39,118 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:18:39,118 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:18:39,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:18:39,119 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:18:39,119 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:18:39,119 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:18:39,120 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:18:39,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:18:39,120 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:18:39,121 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:18:39,121 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:18:39,122 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:18:39,122 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_9c60fe32-de3d-4695-9e40-0ac5e60e1672/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b286836f98ea28c8d142c9f806621ee4793004eb1aab8be8357681e891f9ba79 [2023-11-23 21:18:39,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:18:39,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:18:39,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:18:39,546 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:18:39,547 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:18:39,549 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-76.i [2023-11-23 21:18:43,490 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:18:43,832 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:18:43,832 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-76.i [2023-11-23 21:18:43,843 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/bin/utaipan-verify-mE87zJ7Ire/data/76768963d/9f224b389c9748d0bec41ccfdbe17ea7/FLAG2718c8167 [2023-11-23 21:18:43,861 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/bin/utaipan-verify-mE87zJ7Ire/data/76768963d/9f224b389c9748d0bec41ccfdbe17ea7 [2023-11-23 21:18:43,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:18:43,865 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:18:43,867 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:18:43,867 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:18:43,881 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:18:43,882 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:18:43" (1/1) ... [2023-11-23 21:18:43,884 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1263b19c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:43, skipping insertion in model container [2023-11-23 21:18:43,884 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:18:43" (1/1) ... [2023-11-23 21:18:43,915 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:18:44,122 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_9c60fe32-de3d-4695-9e40-0ac5e60e1672/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-76.i[915,928] [2023-11-23 21:18:44,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:18:44,176 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:18:44,202 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_9c60fe32-de3d-4695-9e40-0ac5e60e1672/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-76.i[915,928] [2023-11-23 21:18:44,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:18:44,243 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:18:44,243 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:44 WrapperNode [2023-11-23 21:18:44,243 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:18:44,245 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:18:44,245 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:18:44,245 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:18:44,253 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:44" (1/1) ... [2023-11-23 21:18:44,273 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:44" (1/1) ... [2023-11-23 21:18:44,312 INFO L138 Inliner]: procedures = 26, calls = 20, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 73 [2023-11-23 21:18:44,312 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:18:44,313 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:18:44,313 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:18:44,314 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:18:44,325 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:44" (1/1) ... [2023-11-23 21:18:44,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:44" (1/1) ... [2023-11-23 21:18:44,328 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:44" (1/1) ... [2023-11-23 21:18:44,329 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:44" (1/1) ... [2023-11-23 21:18:44,334 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:44" (1/1) ... [2023-11-23 21:18:44,338 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:44" (1/1) ... [2023-11-23 21:18:44,340 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:44" (1/1) ... [2023-11-23 21:18:44,342 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:44" (1/1) ... [2023-11-23 21:18:44,345 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:18:44,346 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:18:44,347 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:18:44,347 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:18:44,348 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:44" (1/1) ... [2023-11-23 21:18:44,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:18:44,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:18:44,390 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:18:44,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:18:44,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:18:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:18:44,440 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:18:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:18:44,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:18:44,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:18:44,547 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:18:44,549 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:18:44,750 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:18:44,881 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:18:44,881 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:18:44,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:44 BoogieIcfgContainer [2023-11-23 21:18:44,884 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:18:44,888 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:18:44,888 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:18:44,893 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:18:44,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:18:43" (1/3) ... [2023-11-23 21:18:44,894 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7bb86a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:44, skipping insertion in model container [2023-11-23 21:18:44,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:44" (2/3) ... [2023-11-23 21:18:44,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7bb86a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:44, skipping insertion in model container [2023-11-23 21:18:44,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:44" (3/3) ... [2023-11-23 21:18:44,903 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-76.i [2023-11-23 21:18:44,936 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:18:44,936 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:18:45,011 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:18:45,020 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;@36e6f628, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:18:45,020 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:18:45,026 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 21:18:45,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-23 21:18:45,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:45,039 INFO L195 NwaCegarLoop]: trace histogram [7, 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 21:18:45,040 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:18:45,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:45,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1524130358, now seen corresponding path program 1 times [2023-11-23 21:18:45,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:45,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360844467] [2023-11-23 21:18:45,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:45,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:18:45,432 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:18:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:18:45,653 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:18:45,656 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:18:45,658 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:18:45,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:18:45,672 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:18:45,679 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:18:45,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:18:45 BoogieIcfgContainer [2023-11-23 21:18:45,725 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:18:45,726 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:18:45,726 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:18:45,727 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:18:45,728 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:44" (3/4) ... [2023-11-23 21:18:45,732 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:18:45,733 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:18:45,736 INFO L158 Benchmark]: Toolchain (without parser) took 1869.22ms. Allocated memory is still 182.5MB. Free memory was 150.2MB in the beginning and 99.0MB in the end (delta: 51.3MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2023-11-23 21:18:45,737 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 119.5MB. Free memory is still 63.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:18:45,738 INFO L158 Benchmark]: CACSL2BoogieTranslator took 376.76ms. Allocated memory is still 182.5MB. Free memory was 150.2MB in the beginning and 138.8MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:18:45,739 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.78ms. Allocated memory is still 182.5MB. Free memory was 138.8MB in the beginning and 137.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:18:45,740 INFO L158 Benchmark]: Boogie Preprocessor took 32.28ms. Allocated memory is still 182.5MB. Free memory was 137.7MB in the beginning and 135.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:18:45,741 INFO L158 Benchmark]: RCFGBuilder took 537.67ms. Allocated memory is still 182.5MB. Free memory was 135.8MB in the beginning and 120.0MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-23 21:18:45,742 INFO L158 Benchmark]: TraceAbstraction took 837.25ms. Allocated memory is still 182.5MB. Free memory was 119.0MB in the beginning and 99.0MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-23 21:18:45,742 INFO L158 Benchmark]: Witness Printer took 7.10ms. Allocated memory is still 182.5MB. Free memory was 99.0MB in the beginning and 99.0MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:18:45,747 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 119.5MB. Free memory is still 63.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 376.76ms. Allocated memory is still 182.5MB. Free memory was 150.2MB in the beginning and 138.8MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.78ms. Allocated memory is still 182.5MB. Free memory was 138.8MB in the beginning and 137.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.28ms. Allocated memory is still 182.5MB. Free memory was 137.7MB in the beginning and 135.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 537.67ms. Allocated memory is still 182.5MB. Free memory was 135.8MB in the beginning and 120.0MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 837.25ms. Allocated memory is still 182.5MB. Free memory was 119.0MB in the beginning and 99.0MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 7.10ms. Allocated memory is still 182.5MB. Free memory was 99.0MB in the beginning and 99.0MB in the end (delta: 2.6kB). 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 someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 35. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] double var_1_1 = 32.81; [L23] float var_1_3 = 256.25; [L24] float var_1_4 = 1.75; [L25] double var_1_5 = 10000000.5; [L26] unsigned char var_1_6 = 0; [L27] unsigned char var_1_8 = 0; [L28] unsigned char var_1_9 = 0; [L29] signed char var_1_10 = 5; [L30] double last_1_var_1_1 = 32.81; [L31] unsigned char last_1_var_1_6 = 0; [L66] isInitial = 1 [L67] FCALL initially() [L68] COND TRUE 1 [L69] CALL updateLastVariables() [L58] last_1_var_1_1 = var_1_1 [L59] last_1_var_1_6 = var_1_6 [L69] RET updateLastVariables() [L70] CALL updateVariables() [L44] var_1_3 = __VERIFIER_nondet_float() [L45] CALL assume_abort_if_not((var_1_3 >= 0.0F && 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=3281/100, last_1_var_1_6=0, var_1_10=5, var_1_1=3281/100, var_1_4=7/4, var_1_5=20000001/2, var_1_6=0, var_1_8=0, var_1_9=0] [L20] COND FALSE !(!cond) [L45] RET assume_abort_if_not((var_1_3 >= 0.0F && 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=3281/100, last_1_var_1_6=0, var_1_10=5, var_1_1=3281/100, var_1_4=7/4, var_1_5=20000001/2, var_1_6=0, var_1_8=0, var_1_9=0] [L46] var_1_4 = __VERIFIER_nondet_float() [L47] CALL assume_abort_if_not((var_1_4 >= 0.0F && 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=3281/100, last_1_var_1_6=0, var_1_10=5, var_1_1=3281/100, var_1_5=20000001/2, var_1_6=0, var_1_8=0, var_1_9=0] [L20] COND FALSE !(!cond) [L47] RET assume_abort_if_not((var_1_4 >= 0.0F && 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=3281/100, last_1_var_1_6=0, var_1_10=5, var_1_1=3281/100, var_1_5=20000001/2, var_1_6=0, var_1_8=0, var_1_9=0] [L48] var_1_5 = __VERIFIER_nondet_double() [L49] CALL assume_abort_if_not((var_1_5 >= -922337.2036854765600e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854765600e+12F && var_1_5 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=3281/100, last_1_var_1_6=0, var_1_10=5, var_1_1=3281/100, var_1_6=0, var_1_8=0, var_1_9=0] [L20] COND FALSE !(!cond) [L49] RET assume_abort_if_not((var_1_5 >= -922337.2036854765600e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854765600e+12F && var_1_5 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_1=3281/100, last_1_var_1_6=0, var_1_10=5, var_1_1=3281/100, var_1_6=0, var_1_8=0, var_1_9=0] [L50] var_1_8 = __VERIFIER_nondet_uchar() [L51] CALL assume_abort_if_not(var_1_8 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=3281/100, last_1_var_1_6=0, var_1_10=5, var_1_1=3281/100, var_1_6=0, var_1_9=0] [L20] COND FALSE !(!cond) [L51] RET assume_abort_if_not(var_1_8 >= 0) VAL [isInitial=1, last_1_var_1_1=3281/100, last_1_var_1_6=0, var_1_10=5, var_1_1=3281/100, var_1_6=0, var_1_9=0] [L52] CALL assume_abort_if_not(var_1_8 <= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=3281/100, last_1_var_1_6=0, var_1_10=5, var_1_1=3281/100, var_1_6=0, var_1_8=0, var_1_9=0] [L20] COND FALSE !(!cond) [L52] RET assume_abort_if_not(var_1_8 <= 0) VAL [isInitial=1, last_1_var_1_1=3281/100, last_1_var_1_6=0, var_1_10=5, var_1_1=3281/100, var_1_6=0, var_1_8=0, var_1_9=0] [L53] var_1_9 = __VERIFIER_nondet_uchar() [L54] CALL assume_abort_if_not(var_1_9 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=3281/100, last_1_var_1_6=0, var_1_10=5, var_1_1=3281/100, var_1_6=0, var_1_8=0] [L20] COND FALSE !(!cond) [L54] RET assume_abort_if_not(var_1_9 >= 0) VAL [isInitial=1, last_1_var_1_1=3281/100, last_1_var_1_6=0, var_1_10=5, var_1_1=3281/100, var_1_6=0, var_1_8=0] [L55] CALL assume_abort_if_not(var_1_9 <= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=3281/100, last_1_var_1_6=0, var_1_10=5, var_1_1=3281/100, var_1_6=0, var_1_8=0, var_1_9=0] [L20] COND FALSE !(!cond) [L55] RET assume_abort_if_not(var_1_9 <= 0) VAL [isInitial=1, last_1_var_1_1=3281/100, last_1_var_1_6=0, var_1_10=5, var_1_1=3281/100, var_1_6=0, var_1_8=0, var_1_9=0] [L70] RET updateVariables() [L71] CALL step() [L35] COND FALSE !(last_1_var_1_1 < (((((var_1_3) < (var_1_4)) ? (var_1_3) : (var_1_4))) - 199.2f)) [L38] COND FALSE !(\read(last_1_var_1_6)) [L41] var_1_10 = -50 [L71] RET step() [L72] CALL, EXPR property() [L62-L63] return (((last_1_var_1_1 < (((((var_1_3) < (var_1_4)) ? (var_1_3) : (var_1_4))) - 199.2f)) ? (var_1_1 == ((double) var_1_5)) : 1) && (last_1_var_1_6 ? (var_1_6 == ((unsigned char) (! (var_1_8 || var_1_9)))) : 1)) && (var_1_10 == ((signed char) -50)) ; [L72] RET, EXPR property() [L72] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_1=3281/100, last_1_var_1_6=0, var_1_10=-50, var_1_1=3281/100, var_1_5=3281/100, var_1_6=0, var_1_8=0, var_1_9=0] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_1=3281/100, last_1_var_1_6=0, var_1_10=-50, var_1_1=3281/100, var_1_5=3281/100, var_1_6=0, var_1_8=0, var_1_9=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 7, 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=21occurred 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, 30 NumberOfCodeBlocks, 30 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 21:18:45,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_9c60fe32-de3d-4695-9e40-0ac5e60e1672/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/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_9c60fe32-de3d-4695-9e40-0ac5e60e1672/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-76.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/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_9c60fe32-de3d-4695-9e40-0ac5e60e1672/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 b286836f98ea28c8d142c9f806621ee4793004eb1aab8be8357681e891f9ba79 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:18:49,256 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:18:49,360 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 21:18:49,369 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:18:49,370 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:18:49,409 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:18:49,410 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:18:49,411 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:18:49,412 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:18:49,413 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:18:49,414 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:18:49,415 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:18:49,415 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:18:49,416 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:18:49,417 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:18:49,418 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:18:49,419 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:18:49,420 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:18:49,421 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:18:49,422 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:18:49,422 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:18:49,423 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:18:49,424 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:18:49,425 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:18:49,425 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:18:49,426 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:18:49,426 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:18:49,427 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:18:49,428 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:18:49,428 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:18:49,429 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:18:49,430 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:18:49,430 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:18:49,431 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:18:49,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:18:49,432 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:18:49,433 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:18:49,433 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:18:49,434 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:18:49,434 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:18:49,434 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:18:49,435 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:18:49,435 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:18:49,436 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:18:49,436 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_9c60fe32-de3d-4695-9e40-0ac5e60e1672/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b286836f98ea28c8d142c9f806621ee4793004eb1aab8be8357681e891f9ba79 [2023-11-23 21:18:49,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:18:50,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:18:50,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:18:50,036 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:18:50,037 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:18:50,039 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-76.i [2023-11-23 21:18:54,060 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:18:54,371 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:18:54,372 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-76.i [2023-11-23 21:18:54,383 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/bin/utaipan-verify-mE87zJ7Ire/data/c18b72fea/f7b8e1dfe8634d20be4df9cbf47c967e/FLAG96360943a [2023-11-23 21:18:54,403 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/bin/utaipan-verify-mE87zJ7Ire/data/c18b72fea/f7b8e1dfe8634d20be4df9cbf47c967e [2023-11-23 21:18:54,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:18:54,410 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:18:54,412 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:18:54,413 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:18:54,419 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:18:54,420 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:18:54" (1/1) ... [2023-11-23 21:18:54,422 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e66d506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:54, skipping insertion in model container [2023-11-23 21:18:54,422 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:18:54" (1/1) ... [2023-11-23 21:18:54,457 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:18:54,720 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_9c60fe32-de3d-4695-9e40-0ac5e60e1672/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-76.i[915,928] [2023-11-23 21:18:54,780 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:18:54,817 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:18:54,842 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_9c60fe32-de3d-4695-9e40-0ac5e60e1672/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-76.i[915,928] [2023-11-23 21:18:54,879 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:18:54,911 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:18:54,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:54 WrapperNode [2023-11-23 21:18:54,912 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:18:54,913 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:18:54,914 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:18:54,914 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:18:54,925 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:54" (1/1) ... [2023-11-23 21:18:54,961 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:54" (1/1) ... [2023-11-23 21:18:55,015 INFO L138 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 73 [2023-11-23 21:18:55,018 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:18:55,020 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:18:55,021 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:18:55,022 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:18:55,036 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:54" (1/1) ... [2023-11-23 21:18:55,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:54" (1/1) ... [2023-11-23 21:18:55,051 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:54" (1/1) ... [2023-11-23 21:18:55,052 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:54" (1/1) ... [2023-11-23 21:18:55,073 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:54" (1/1) ... [2023-11-23 21:18:55,078 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:54" (1/1) ... [2023-11-23 21:18:55,081 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:54" (1/1) ... [2023-11-23 21:18:55,083 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:54" (1/1) ... [2023-11-23 21:18:55,089 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:18:55,090 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:18:55,091 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:18:55,093 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:18:55,094 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:54" (1/1) ... [2023-11-23 21:18:55,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:18:55,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:18:55,147 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:18:55,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:18:55,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:18:55,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:18:55,216 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:18:55,217 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:18:55,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:18:55,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:18:55,367 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:18:55,372 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:18:56,950 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:18:57,019 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:18:57,019 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:18:57,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:57 BoogieIcfgContainer [2023-11-23 21:18:57,020 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:18:57,024 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:18:57,024 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:18:57,029 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:18:57,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:18:54" (1/3) ... [2023-11-23 21:18:57,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ec47d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:57, skipping insertion in model container [2023-11-23 21:18:57,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:54" (2/3) ... [2023-11-23 21:18:57,032 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ec47d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:57, skipping insertion in model container [2023-11-23 21:18:57,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:57" (3/3) ... [2023-11-23 21:18:57,037 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-76.i [2023-11-23 21:18:57,063 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:18:57,063 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:18:57,119 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:18:57,128 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;@61482875, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:18:57,129 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:18:57,134 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 21:18:57,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-23 21:18:57,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:57,150 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 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 21:18:57,151 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:18:57,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:57,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1692738125, now seen corresponding path program 1 times [2023-11-23 21:18:57,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:18:57,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644282623] [2023-11-23 21:18:57,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:57,182 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 21:18:57,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:18:57,186 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/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 21:18:57,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/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 21:18:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:57,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:18:57,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:18:57,493 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-23 21:18:57,493 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:18:57,494 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:18:57,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [644282623] [2023-11-23 21:18:57,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [644282623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:57,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:57,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:18:57,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204892676] [2023-11-23 21:18:57,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:57,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:18:57,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:18:57,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:18:57,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:18:57,547 INFO L87 Difference]: Start difference. First operand has 27 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 21:18:58,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:58,120 INFO L93 Difference]: Finished difference Result 51 states and 81 transitions. [2023-11-23 21:18:58,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:18:58,136 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2023-11-23 21:18:58,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:58,145 INFO L225 Difference]: With dead ends: 51 [2023-11-23 21:18:58,145 INFO L226 Difference]: Without dead ends: 25 [2023-11-23 21:18:58,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 46 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 21:18:58,158 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:58,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:18:58,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-23 21:18:58,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-11-23 21:18:58,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 21:18:58,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2023-11-23 21:18:58,224 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 47 [2023-11-23 21:18:58,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:58,225 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2023-11-23 21:18:58,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 21:18:58,226 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2023-11-23 21:18:58,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-23 21:18:58,232 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:58,232 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 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 21:18:58,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/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)] Forceful destruction successful, exit code 0 [2023-11-23 21:18:58,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/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 21:18:58,439 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:18:58,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:58,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1148317523, now seen corresponding path program 1 times [2023-11-23 21:18:58,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:18:58,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150289656] [2023-11-23 21:18:58,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:58,442 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 21:18:58,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:18:58,445 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/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 21:18:58,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/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 21:18:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:58,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:18:58,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:18:58,982 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 21:18:58,983 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:18:58,983 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:18:58,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150289656] [2023-11-23 21:18:58,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150289656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:58,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:58,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:18:58,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355134539] [2023-11-23 21:18:58,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:58,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:18:58,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:18:58,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:18:58,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:18:58,988 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-23 21:18:59,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:59,462 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2023-11-23 21:18:59,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:18:59,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 47 [2023-11-23 21:18:59,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:59,478 INFO L225 Difference]: With dead ends: 49 [2023-11-23 21:18:59,478 INFO L226 Difference]: Without dead ends: 25 [2023-11-23 21:18:59,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:18:59,482 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:59,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 28 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:18:59,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-23 21:18:59,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-11-23 21:18:59,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 21:18:59,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2023-11-23 21:18:59,503 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 47 [2023-11-23 21:18:59,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:59,506 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2023-11-23 21:18:59,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-23 21:18:59,508 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2023-11-23 21:18:59,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-23 21:18:59,512 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:59,513 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 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 21:18:59,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/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 21:18:59,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/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 21:18:59,724 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:18:59,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:59,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1148377105, now seen corresponding path program 1 times [2023-11-23 21:18:59,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:18:59,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678987576] [2023-11-23 21:18:59,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:59,727 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 21:18:59,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:18:59,728 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/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 21:18:59,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c60fe32-de3d-4695-9e40-0ac5e60e1672/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 21:18:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:59,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 21:18:59,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:19:21,998 WARN L293 SmtUtils]: Spent 9.95s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-23 21:19:39,491 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 21:19:39,492 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:19:39,492 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:19:39,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678987576] [2023-11-23 21:19:39,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678987576] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:19:39,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:19:39,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:19:39,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501654358] [2023-11-23 21:19:39,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:19:39,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:19:39,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:19:39,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:19:39,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:19:39,496 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7)