./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 4fc63b2a 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_25826402-4a02-41ad-b8e8-27a89b5823c3/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25826402-4a02-41ad-b8e8-27a89b5823c3/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25826402-4a02-41ad-b8e8-27a89b5823c3/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25826402-4a02-41ad-b8e8-27a89b5823c3/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25826402-4a02-41ad-b8e8-27a89b5823c3/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25826402-4a02-41ad-b8e8-27a89b5823c3/bin/utaipan-verify-DbMuA5NWw2 --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-4fc63b2 [2024-11-02 12:27:33,673 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:27:33,775 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25826402-4a02-41ad-b8e8-27a89b5823c3/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:27:33,783 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:27:33,784 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:27:33,834 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:27:33,834 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:27:33,835 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:27:33,835 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:27:33,836 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:27:33,838 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:27:33,839 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:27:33,839 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:27:33,842 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:27:33,842 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:27:33,843 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:27:33,843 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:27:33,843 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:27:33,844 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:27:33,844 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:27:33,848 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:27:33,849 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:27:33,849 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:27:33,850 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:27:33,850 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:27:33,850 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:27:33,850 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:27:33,851 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:27:33,851 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:27:33,851 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:27:33,851 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:27:33,852 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:27:33,852 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:27:33,853 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:27:33,854 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:27:33,855 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:27:33,855 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:27:33,856 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:27:33,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:27:33,857 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:27:33,857 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:27:33,857 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:27:33,858 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:27:33,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:27:33,859 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:27:33,859 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:27:33,859 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:27:33,860 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_25826402-4a02-41ad-b8e8-27a89b5823c3/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25826402-4a02-41ad-b8e8-27a89b5823c3/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e6f79eda5be95b806b33aaa2a353a360ae33a1e35cc1bf6f128d14768d932de [2024-11-02 12:27:34,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:27:34,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:27:34,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:27:34,273 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:27:34,274 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:27:34,275 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25826402-4a02-41ad-b8e8-27a89b5823c3/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i Unable to find full path for "g++" [2024-11-02 12:27:36,637 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:27:37,195 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:27:37,195 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25826402-4a02-41ad-b8e8-27a89b5823c3/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i [2024-11-02 12:27:37,230 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25826402-4a02-41ad-b8e8-27a89b5823c3/bin/utaipan-verify-DbMuA5NWw2/data/433e55099/9bf6525252c247d9bc5560f741f68e57/FLAG4c43a87f1 [2024-11-02 12:27:37,252 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25826402-4a02-41ad-b8e8-27a89b5823c3/bin/utaipan-verify-DbMuA5NWw2/data/433e55099/9bf6525252c247d9bc5560f741f68e57 [2024-11-02 12:27:37,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:27:37,256 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:27:37,260 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:27:37,260 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:27:37,267 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:27:37,268 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:27:37" (1/1) ... [2024-11-02 12:27:37,269 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d99cae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:37, skipping insertion in model container [2024-11-02 12:27:37,271 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:27:37" (1/1) ... [2024-11-02 12:27:37,365 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:27:37,613 WARN L251 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_25826402-4a02-41ad-b8e8-27a89b5823c3/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i[452,465] [2024-11-02 12:27:39,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:27:39,240 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:27:39,254 WARN L251 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_25826402-4a02-41ad-b8e8-27a89b5823c3/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i[452,465] [2024-11-02 12:27:39,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:27:39,651 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:27:39,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:39 WrapperNode [2024-11-02 12:27:39,652 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:27:39,653 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:27:39,653 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:27:39,653 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:27:39,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:39" (1/1) ... [2024-11-02 12:27:39,755 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:39" (1/1) ... [2024-11-02 12:27:39,926 INFO L138 Inliner]: procedures = 472, calls = 2680, calls flagged for inlining = 54, calls inlined = 38, statements flattened = 3394 [2024-11-02 12:27:39,926 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:27:39,927 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:27:39,927 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:27:39,927 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:27:39,937 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:39" (1/1) ... [2024-11-02 12:27:39,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:39" (1/1) ... [2024-11-02 12:27:39,970 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:39" (1/1) ... [2024-11-02 12:27:39,972 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:39" (1/1) ... [2024-11-02 12:27:40,072 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:39" (1/1) ... [2024-11-02 12:27:40,090 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:39" (1/1) ... [2024-11-02 12:27:40,118 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:39" (1/1) ... [2024-11-02 12:27:40,131 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:39" (1/1) ... [2024-11-02 12:27:40,162 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:27:40,165 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:27:40,165 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:27:40,165 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:27:40,166 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:39" (1/1) ... [2024-11-02 12:27:40,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:27:40,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25826402-4a02-41ad-b8e8-27a89b5823c3/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:27:40,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25826402-4a02-41ad-b8e8-27a89b5823c3/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:27:40,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25826402-4a02-41ad-b8e8-27a89b5823c3/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:27:40,245 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2024-11-02 12:27:40,245 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2024-11-02 12:27:40,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-02 12:27:40,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2024-11-02 12:27:40,247 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2024-11-02 12:27:40,247 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2024-11-02 12:27:40,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:27:40,248 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2024-11-02 12:27:40,248 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2024-11-02 12:27:40,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-02 12:27:40,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2024-11-02 12:27:40,248 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2024-11-02 12:27:40,248 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2024-11-02 12:27:40,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:27:40,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 12:27:40,249 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2024-11-02 12:27:40,249 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2024-11-02 12:27:40,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:27:40,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 12:27:40,249 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-02 12:27:40,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-02 12:27:40,249 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2024-11-02 12:27:40,250 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2024-11-02 12:27:40,250 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2024-11-02 12:27:40,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2024-11-02 12:27:40,251 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2024-11-02 12:27:40,251 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2024-11-02 12:27:40,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:27:40,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:27:40,252 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2024-11-02 12:27:40,252 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2024-11-02 12:27:40,252 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 12:27:40,252 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 12:27:40,252 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2024-11-02 12:27:40,253 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2024-11-02 12:27:40,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:27:40,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-02 12:27:40,253 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2024-11-02 12:27:40,253 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2024-11-02 12:27:40,253 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2024-11-02 12:27:40,253 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2024-11-02 12:27:40,254 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2024-11-02 12:27:40,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2024-11-02 12:27:40,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-02 12:27:40,254 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-02 12:27:40,254 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-02 12:27:40,254 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2024-11-02 12:27:40,254 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2024-11-02 12:27:40,255 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2024-11-02 12:27:40,255 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2024-11-02 12:27:40,255 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2024-11-02 12:27:40,257 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2024-11-02 12:27:40,257 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2024-11-02 12:27:40,257 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2024-11-02 12:27:40,257 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2024-11-02 12:27:40,258 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2024-11-02 12:27:40,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:27:40,259 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2024-11-02 12:27:40,259 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2024-11-02 12:27:40,260 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2024-11-02 12:27:40,260 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2024-11-02 12:27:40,260 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2024-11-02 12:27:40,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2024-11-02 12:27:40,261 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2024-11-02 12:27:40,261 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2024-11-02 12:27:40,261 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-02 12:27:40,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-02 12:27:40,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:27:40,751 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:27:40,755 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:27:46,489 INFO L? ?]: Removed 443 outVars from TransFormulas that were not future-live. [2024-11-02 12:27:46,490 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:27:47,297 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:27:47,297 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-02 12:27:47,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:27:47 BoogieIcfgContainer [2024-11-02 12:27:47,298 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:27:47,303 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:27:47,304 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:27:47,308 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:27:47,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:27:37" (1/3) ... [2024-11-02 12:27:47,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19294b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:27:47, skipping insertion in model container [2024-11-02 12:27:47,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:39" (2/3) ... [2024-11-02 12:27:47,311 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19294b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:27:47, skipping insertion in model container [2024-11-02 12:27:47,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:27:47" (3/3) ... [2024-11-02 12:27:47,313 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_inw.i [2024-11-02 12:27:47,333 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:27:47,333 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:27:47,434 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:27:47,443 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;@3edb5c50, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:27:47,444 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:27:47,454 INFO L276 IsEmpty]: Start isEmpty. Operand has 267 states, 161 states have (on average 1.3540372670807452) internal successors, (218), 168 states have internal predecessors, (218), 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) [2024-11-02 12:27:47,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-02 12:27:47,477 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:47,478 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:47,478 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting zf_readwErr0ASSERT_VIOLATIONERROR_FUNCTION === [zf_readwErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:47,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:47,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1950124113, now seen corresponding path program 1 times [2024-11-02 12:27:47,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:47,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650108529] [2024-11-02 12:27:47,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:47,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:52,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:52,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:52,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650108529] [2024-11-02 12:27:52,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650108529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:52,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:52,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:27:52,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632072131] [2024-11-02 12:27:52,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:52,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:27:52,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:52,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:27:52,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:27:52,659 INFO L87 Difference]: Start difference. First operand has 267 states, 161 states have (on average 1.3540372670807452) internal successors, (218), 168 states have internal predecessors, (218), 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 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2024-11-02 12:27:53,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:53,471 INFO L93 Difference]: Finished difference Result 532 states and 760 transitions. [2024-11-02 12:27:53,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:27:53,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 19 [2024-11-02 12:27:53,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:53,490 INFO L225 Difference]: With dead ends: 532 [2024-11-02 12:27:53,490 INFO L226 Difference]: Without dead ends: 263 [2024-11-02 12:27:53,497 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 [2024-11-02 12:27:53,503 INFO L432 NwaCegarLoop]: 313 mSDtfsCounter, 0 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:53,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 625 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-02 12:27:53,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2024-11-02 12:27:53,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2024-11-02 12:27:53,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 160 states have (on average 1.3375) internal successors, (214), 167 states have internal predecessors, (214), 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) [2024-11-02 12:27:53,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 365 transitions. [2024-11-02 12:27:53,605 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 365 transitions. Word has length 19 [2024-11-02 12:27:53,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:53,606 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 365 transitions. [2024-11-02 12:27:53,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2024-11-02 12:27:53,607 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 365 transitions. [2024-11-02 12:27:53,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-02 12:27:53,608 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:53,609 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] [2024-11-02 12:27:53,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:27:53,609 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting zf_readwErr0ASSERT_VIOLATIONERROR_FUNCTION === [zf_readwErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:53,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:53,610 INFO L85 PathProgramCache]: Analyzing trace with hash 167260976, now seen corresponding path program 1 times [2024-11-02 12:27:53,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:53,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134643408] [2024-11-02 12:27:53,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:53,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:57,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:27:57,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:57,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134643408] [2024-11-02 12:27:57,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134643408] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:27:57,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90154412] [2024-11-02 12:27:57,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:57,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:27:57,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25826402-4a02-41ad-b8e8-27a89b5823c3/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:27:57,787 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25826402-4a02-41ad-b8e8-27a89b5823c3/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:27:57,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25826402-4a02-41ad-b8e8-27a89b5823c3/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:28:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:01,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 5510 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 12:28:01,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:28:01,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:28:01,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:28:02,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:28:02,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90154412] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:28:02,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1781054667] [2024-11-02 12:28:02,061 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-02 12:28:02,062 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:28:02,066 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:28:02,071 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:28:02,072 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs