./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6704e5c1-8a0a-422d-b942-e2aec0ddddcb/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6704e5c1-8a0a-422d-b942-e2aec0ddddcb/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6704e5c1-8a0a-422d-b942-e2aec0ddddcb/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6704e5c1-8a0a-422d-b942-e2aec0ddddcb/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6704e5c1-8a0a-422d-b942-e2aec0ddddcb/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6704e5c1-8a0a-422d-b942-e2aec0ddddcb/bin/utaipan-verify-YMUCfTKeje --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 6e6f79eda5be95b806b33aaa2a353a360ae33a1e35cc1bf6f128d14768d932de --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 01:14:51,014 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 01:14:51,152 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6704e5c1-8a0a-422d-b942-e2aec0ddddcb/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 01:14:51,160 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 01:14:51,161 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 01:14:51,192 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 01:14:51,193 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 01:14:51,194 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 01:14:51,195 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 01:14:51,195 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 01:14:51,196 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 01:14:51,197 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 01:14:51,197 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 01:14:51,198 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 01:14:51,198 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 01:14:51,199 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 01:14:51,199 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 01:14:51,200 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 01:14:51,200 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 01:14:51,201 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 01:14:51,202 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 01:14:51,206 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 01:14:51,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 01:14:51,207 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 01:14:51,208 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 01:14:51,208 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 01:14:51,208 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 01:14:51,209 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 01:14:51,209 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 01:14:51,214 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 01:14:51,214 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 01:14:51,215 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 01:14:51,215 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 01:14:51,215 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 01:14:51,216 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 01:14:51,216 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 01:14:51,216 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 01:14:51,217 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 01:14:51,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:14:51,220 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 01:14:51,221 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 01:14:51,223 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 01:14:51,223 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 01:14:51,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 01:14:51,224 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 01:14:51,224 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 01:14:51,224 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 01:14:51,224 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_6704e5c1-8a0a-422d-b942-e2aec0ddddcb/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6704e5c1-8a0a-422d-b942-e2aec0ddddcb/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e6f79eda5be95b806b33aaa2a353a360ae33a1e35cc1bf6f128d14768d932de [2024-11-09 01:14:51,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 01:14:51,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 01:14:51,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 01:14:51,634 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 01:14:51,635 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 01:14:51,637 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6704e5c1-8a0a-422d-b942-e2aec0ddddcb/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i Unable to find full path for "g++" [2024-11-09 01:14:54,162 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 01:14:54,794 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 01:14:54,795 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6704e5c1-8a0a-422d-b942-e2aec0ddddcb/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i [2024-11-09 01:14:54,833 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6704e5c1-8a0a-422d-b942-e2aec0ddddcb/bin/utaipan-verify-YMUCfTKeje/data/cab65a11e/52fc9623cbcc43d9be04baf5058f2b51/FLAG62ba88bd3 [2024-11-09 01:14:54,856 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6704e5c1-8a0a-422d-b942-e2aec0ddddcb/bin/utaipan-verify-YMUCfTKeje/data/cab65a11e/52fc9623cbcc43d9be04baf5058f2b51 [2024-11-09 01:14:54,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 01:14:54,861 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 01:14:54,864 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 01:14:54,868 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 01:14:54,876 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 01:14:54,877 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:14:54" (1/1) ... [2024-11-09 01:14:54,879 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29113d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:14:54, skipping insertion in model container [2024-11-09 01:14:54,880 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:14:54" (1/1) ... [2024-11-09 01:14:54,994 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 01:14:55,381 WARN L250 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_6704e5c1-8a0a-422d-b942-e2aec0ddddcb/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i[452,465] [2024-11-09 01:14:57,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:14:57,308 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 01:14:57,325 WARN L250 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_6704e5c1-8a0a-422d-b942-e2aec0ddddcb/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i[452,465] [2024-11-09 01:14:57,672 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:14:58,083 INFO L204 MainTranslator]: Completed translation [2024-11-09 01:14:58,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:14:58 WrapperNode [2024-11-09 01:14:58,084 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 01:14:58,085 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 01:14:58,085 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 01:14:58,086 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 01:14:58,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:14:58" (1/1) ... [2024-11-09 01:14:58,218 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:14:58" (1/1) ... [2024-11-09 01:14:58,409 INFO L138 Inliner]: procedures = 472, calls = 2680, calls flagged for inlining = 54, calls inlined = 38, statements flattened = 3390 [2024-11-09 01:14:58,410 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 01:14:58,410 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 01:14:58,411 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 01:14:58,411 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 01:14:58,424 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:14:58" (1/1) ... [2024-11-09 01:14:58,425 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:14:58" (1/1) ... [2024-11-09 01:14:58,458 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:14:58" (1/1) ... [2024-11-09 01:14:58,458 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:14:58" (1/1) ... [2024-11-09 01:14:58,550 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:14:58" (1/1) ... [2024-11-09 01:14:58,561 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:14:58" (1/1) ... [2024-11-09 01:14:58,582 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:14:58" (1/1) ... [2024-11-09 01:14:58,675 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:14:58" (1/1) ... [2024-11-09 01:14:58,721 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 01:14:58,725 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 01:14:58,726 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 01:14:58,726 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 01:14:58,727 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:14:58" (1/1) ... [2024-11-09 01:14:58,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:14:58,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6704e5c1-8a0a-422d-b942-e2aec0ddddcb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:14:58,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6704e5c1-8a0a-422d-b942-e2aec0ddddcb/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 01:14:58,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6704e5c1-8a0a-422d-b942-e2aec0ddddcb/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 01:14:58,842 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2024-11-09 01:14:58,843 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2024-11-09 01:14:58,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 01:14:58,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2024-11-09 01:14:58,846 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2024-11-09 01:14:58,846 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2024-11-09 01:14:58,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 01:14:58,847 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2024-11-09 01:14:58,847 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2024-11-09 01:14:58,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 01:14:58,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2024-11-09 01:14:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2024-11-09 01:14:58,848 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2024-11-09 01:14:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 01:14:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 01:14:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2024-11-09 01:14:58,849 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2024-11-09 01:14:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 01:14:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 01:14:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-09 01:14:58,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-09 01:14:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2024-11-09 01:14:58,851 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2024-11-09 01:14:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2024-11-09 01:14:58,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2024-11-09 01:14:58,852 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2024-11-09 01:14:58,852 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2024-11-09 01:14:58,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 01:14:58,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 01:14:58,852 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2024-11-09 01:14:58,854 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2024-11-09 01:14:58,854 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 01:14:58,854 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 01:14:58,854 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2024-11-09 01:14:58,854 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2024-11-09 01:14:58,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 01:14:58,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 01:14:58,855 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2024-11-09 01:14:58,855 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2024-11-09 01:14:58,855 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2024-11-09 01:14:58,855 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2024-11-09 01:14:58,855 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2024-11-09 01:14:58,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2024-11-09 01:14:58,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 01:14:58,856 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-09 01:14:58,856 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-09 01:14:58,856 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2024-11-09 01:14:58,856 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2024-11-09 01:14:58,856 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2024-11-09 01:14:58,857 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2024-11-09 01:14:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2024-11-09 01:14:58,857 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2024-11-09 01:14:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2024-11-09 01:14:58,857 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2024-11-09 01:14:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2024-11-09 01:14:58,857 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2024-11-09 01:14:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 01:14:58,860 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2024-11-09 01:14:58,861 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2024-11-09 01:14:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2024-11-09 01:14:58,863 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2024-11-09 01:14:58,863 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2024-11-09 01:14:58,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2024-11-09 01:14:58,864 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2024-11-09 01:14:58,864 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2024-11-09 01:14:58,864 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-09 01:14:58,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-09 01:14:58,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 01:14:59,508 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 01:14:59,512 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 01:15:06,983 INFO L? ?]: Removed 446 outVars from TransFormulas that were not future-live. [2024-11-09 01:15:06,984 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 01:15:07,921 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 01:15:07,922 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 01:15:07,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:15:07 BoogieIcfgContainer [2024-11-09 01:15:07,923 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 01:15:07,926 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 01:15:07,927 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 01:15:07,931 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 01:15:07,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 01:14:54" (1/3) ... [2024-11-09 01:15:07,933 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a8c5b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:15:07, skipping insertion in model container [2024-11-09 01:15:07,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:14:58" (2/3) ... [2024-11-09 01:15:07,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a8c5b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:15:07, skipping insertion in model container [2024-11-09 01:15:07,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:15:07" (3/3) ... [2024-11-09 01:15:07,936 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_inw.i [2024-11-09 01:15:07,961 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 01:15:07,962 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 01:15:08,081 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 01:15:08,091 INFO L333 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, 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;@61ca9d2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 01:15:08,092 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 01:15:08,101 INFO L276 IsEmpty]: Start isEmpty. Operand has 273 states, 167 states have (on average 1.3592814371257484) internal successors, (227), 174 states have internal predecessors, (227), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-09 01:15:08,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 01:15:08,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:15:08,117 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:15:08,118 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting zf_readwErr0ASSERT_VIOLATIONERROR_FUNCTION === [zf_readwErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:15:08,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:15:08,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1787774464, now seen corresponding path program 1 times [2024-11-09 01:15:08,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:15:08,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128343047] [2024-11-09 01:15:08,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:15:08,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:15:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:15:13,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:15:13,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:15:13,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128343047] [2024-11-09 01:15:13,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128343047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:15:13,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:15:13,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:15:13,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056689683] [2024-11-09 01:15:13,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:15:13,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:15:13,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:15:13,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:15:13,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:15:13,427 INFO L87 Difference]: Start difference. First operand has 273 states, 167 states have (on average 1.3592814371257484) internal successors, (227), 174 states have internal predecessors, (227), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 01:15:14,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:15:14,388 INFO L93 Difference]: Finished difference Result 545 states and 780 transitions. [2024-11-09 01:15:14,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:15:14,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-11-09 01:15:14,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:15:14,407 INFO L225 Difference]: With dead ends: 545 [2024-11-09 01:15:14,407 INFO L226 Difference]: Without dead ends: 271 [2024-11-09 01:15:14,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:15:14,427 INFO L432 NwaCegarLoop]: 323 mSDtfsCounter, 2 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 01:15:14,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 639 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 01:15:14,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-09 01:15:14,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2024-11-09 01:15:14,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 168 states have (on average 1.3392857142857142) internal successors, (225), 175 states have internal predecessors, (225), 76 states have call successors, (76), 26 states have call predecessors, (76), 26 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2024-11-09 01:15:14,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 376 transitions. [2024-11-09 01:15:14,527 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 376 transitions. Word has length 21 [2024-11-09 01:15:14,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:15:14,529 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 376 transitions. [2024-11-09 01:15:14,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 01:15:14,530 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 376 transitions. [2024-11-09 01:15:14,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 01:15:14,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:15:14,532 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:15:14,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 01:15:14,533 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting zf_readwErr0ASSERT_VIOLATIONERROR_FUNCTION === [zf_readwErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:15:14,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:15:14,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1793261098, now seen corresponding path program 1 times [2024-11-09 01:15:14,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:15:14,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476283097] [2024-11-09 01:15:14,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:15:14,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:15:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:15:19,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 01:15:19,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:15:19,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476283097] [2024-11-09 01:15:19,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476283097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:15:19,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604390306] [2024-11-09 01:15:19,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:15:19,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:15:19,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6704e5c1-8a0a-422d-b942-e2aec0ddddcb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:15:19,225 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6704e5c1-8a0a-422d-b942-e2aec0ddddcb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:15:19,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6704e5c1-8a0a-422d-b942-e2aec0ddddcb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 01:15:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:15:23,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 5516 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 01:15:23,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:15:23,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 01:15:23,606 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:15:23,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 01:15:23,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604390306] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:15:23,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [810026769] [2024-11-09 01:15:23,725 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-09 01:15:23,725 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:15:23,731 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:15:23,737 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:15:23,738 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:17:44,963 WARN L286 SmtUtils]: Spent 10.89s on a formula simplification that was a NOOP. DAG size: 4265 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 01:19:23,495 WARN L286 SmtUtils]: Spent 7.96s on a formula simplification that was a NOOP. DAG size: 4265 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 01:20:47,320 WARN L286 SmtUtils]: Spent 9.88s on a formula simplification that was a NOOP. DAG size: 4265 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 01:22:37,165 WARN L286 SmtUtils]: Spent 6.90s on a formula simplification that was a NOOP. DAG size: 4265 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 01:23:26,597 WARN L286 SmtUtils]: Spent 16.68s on a formula simplification that was a NOOP. DAG size: 11412 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-09 01:23:43,272 WARN L286 SmtUtils]: Spent 16.65s on a formula simplification that was a NOOP. DAG size: 11412 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-09 01:24:07,534 WARN L286 SmtUtils]: Spent 24.20s on a formula simplification. DAG size of input: 11413 DAG size of output: 11413 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-09 01:24:23,775 WARN L286 SmtUtils]: Spent 16.23s on a formula simplification that was a NOOP. DAG size: 11412 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-09 01:24:40,589 WARN L286 SmtUtils]: Spent 16.80s on a formula simplification that was a NOOP. DAG size: 11412 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-09 01:25:05,118 WARN L286 SmtUtils]: Spent 24.50s on a formula simplification. DAG size of input: 11413 DAG size of output: 11413 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)