./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 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_0de45dbd-7972-4c2e-bfbf-5e08acf79ee9/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0de45dbd-7972-4c2e-bfbf-5e08acf79ee9/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_0de45dbd-7972-4c2e-bfbf-5e08acf79ee9/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0de45dbd-7972-4c2e-bfbf-5e08acf79ee9/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0de45dbd-7972-4c2e-bfbf-5e08acf79ee9/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0de45dbd-7972-4c2e-bfbf-5e08acf79ee9/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --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 06:28:44,465 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:28:44,559 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0de45dbd-7972-4c2e-bfbf-5e08acf79ee9/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-09 06:28:44,568 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:28:44,569 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:28:44,613 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:28:44,614 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:28:44,614 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:28:44,615 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:28:44,616 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:28:44,617 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:28:44,617 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:28:44,618 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:28:44,618 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:28:44,620 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:28:44,621 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:28:44,621 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:28:44,621 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:28:44,622 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:28:44,622 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:28:44,623 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:28:44,627 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:28:44,627 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 06:28:44,628 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 06:28:44,628 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:28:44,628 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:28:44,628 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:28:44,629 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:28:44,629 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:28:44,629 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 06:28:44,629 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 06:28:44,630 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 06:28:44,630 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:28:44,630 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 06:28:44,633 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:28:44,633 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 06:28:44,633 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:28:44,633 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:28:44,634 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:28:44,634 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:28:44,634 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:28:44,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:28:44,635 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:28:44,635 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:28:44,636 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:28:44,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:28:44,636 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:28:44,637 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:28:44,637 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:28:44,637 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_0de45dbd-7972-4c2e-bfbf-5e08acf79ee9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0de45dbd-7972-4c2e-bfbf-5e08acf79ee9/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e6f79eda5be95b806b33aaa2a353a360ae33a1e35cc1bf6f128d14768d932de [2024-11-09 06:28:44,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:28:44,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:28:44,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:28:44,920 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:28:44,920 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:28:44,922 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0de45dbd-7972-4c2e-bfbf-5e08acf79ee9/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i Unable to find full path for "g++" [2024-11-09 06:28:47,004 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:28:47,372 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:28:47,372 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0de45dbd-7972-4c2e-bfbf-5e08acf79ee9/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i [2024-11-09 06:28:47,403 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0de45dbd-7972-4c2e-bfbf-5e08acf79ee9/bin/utaipan-verify-YMUCfTKeje/data/b21ac8b50/c15cf3591db04aac883b8a32faef7744/FLAGdd19d2d31 [2024-11-09 06:28:47,424 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0de45dbd-7972-4c2e-bfbf-5e08acf79ee9/bin/utaipan-verify-YMUCfTKeje/data/b21ac8b50/c15cf3591db04aac883b8a32faef7744 [2024-11-09 06:28:47,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:28:47,428 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:28:47,429 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:28:47,429 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:28:47,436 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:28:47,436 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:28:47" (1/1) ... [2024-11-09 06:28:47,438 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23ae82f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:47, skipping insertion in model container [2024-11-09 06:28:47,438 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:28:47" (1/1) ... [2024-11-09 06:28:47,551 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:28:48,916 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:28:48,947 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:28:48,983 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:28:49,105 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:28:49,135 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:28:49,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:28:49,198 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:28:49,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:28:49,656 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:28:49,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:49 WrapperNode [2024-11-09 06:28:49,657 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:28:49,658 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:28:49,658 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:28:49,658 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:28:49,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:49" (1/1) ... [2024-11-09 06:28:49,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:49" (1/1) ... [2024-11-09 06:28:49,932 INFO L138 Inliner]: procedures = 472, calls = 2681, calls flagged for inlining = 55, calls inlined = 39, statements flattened = 3391 [2024-11-09 06:28:49,933 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:28:49,934 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:28:49,934 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:28:49,934 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:28:49,945 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:49" (1/1) ... [2024-11-09 06:28:49,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:49" (1/1) ... [2024-11-09 06:28:49,973 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:49" (1/1) ... [2024-11-09 06:28:49,977 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:49" (1/1) ... [2024-11-09 06:28:50,074 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:49" (1/1) ... [2024-11-09 06:28:50,093 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:49" (1/1) ... [2024-11-09 06:28:50,117 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:49" (1/1) ... [2024-11-09 06:28:50,126 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:49" (1/1) ... [2024-11-09 06:28:50,147 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:28:50,148 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:28:50,149 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:28:50,149 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:28:50,150 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:49" (1/1) ... [2024-11-09 06:28:50,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:28:50,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0de45dbd-7972-4c2e-bfbf-5e08acf79ee9/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:28:50,193 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0de45dbd-7972-4c2e-bfbf-5e08acf79ee9/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:28:50,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0de45dbd-7972-4c2e-bfbf-5e08acf79ee9/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:28:50,229 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2024-11-09 06:28:50,229 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2024-11-09 06:28:50,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 06:28:50,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2024-11-09 06:28:50,230 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2024-11-09 06:28:50,230 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2024-11-09 06:28:50,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 06:28:50,230 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2024-11-09 06:28:50,230 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2024-11-09 06:28:50,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 06:28:50,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2024-11-09 06:28:50,231 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2024-11-09 06:28:50,231 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2024-11-09 06:28:50,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 06:28:50,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 06:28:50,231 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2024-11-09 06:28:50,231 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2024-11-09 06:28:50,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:28:50,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 06:28:50,232 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-09 06:28:50,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-09 06:28:50,232 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2024-11-09 06:28:50,232 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2024-11-09 06:28:50,232 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2024-11-09 06:28:50,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2024-11-09 06:28:50,232 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2024-11-09 06:28:50,232 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2024-11-09 06:28:50,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:28:50,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:28:50,233 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2024-11-09 06:28:50,233 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2024-11-09 06:28:50,233 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 06:28:50,233 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 06:28:50,233 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2024-11-09 06:28:50,233 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2024-11-09 06:28:50,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 06:28:50,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 06:28:50,236 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2024-11-09 06:28:50,236 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2024-11-09 06:28:50,236 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2024-11-09 06:28:50,236 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2024-11-09 06:28:50,236 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2024-11-09 06:28:50,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2024-11-09 06:28:50,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 06:28:50,237 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-09 06:28:50,237 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-09 06:28:50,237 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2024-11-09 06:28:50,237 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2024-11-09 06:28:50,237 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2024-11-09 06:28:50,238 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2024-11-09 06:28:50,238 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2024-11-09 06:28:50,238 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2024-11-09 06:28:50,239 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2024-11-09 06:28:50,239 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2024-11-09 06:28:50,240 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2024-11-09 06:28:50,240 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2024-11-09 06:28:50,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 06:28:50,240 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2024-11-09 06:28:50,241 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2024-11-09 06:28:50,241 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2024-11-09 06:28:50,241 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2024-11-09 06:28:50,241 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2024-11-09 06:28:50,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2024-11-09 06:28:50,242 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2024-11-09 06:28:50,242 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2024-11-09 06:28:50,242 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-09 06:28:50,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-09 06:28:50,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:28:50,684 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:28:50,687 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:28:56,431 INFO L? ?]: Removed 662 outVars from TransFormulas that were not future-live. [2024-11-09 06:28:56,431 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:28:57,225 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:28:57,230 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 06:28:57,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:28:57 BoogieIcfgContainer [2024-11-09 06:28:57,230 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:28:57,234 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:28:57,235 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:28:57,239 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:28:57,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:28:47" (1/3) ... [2024-11-09 06:28:57,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b558bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:28:57, skipping insertion in model container [2024-11-09 06:28:57,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:49" (2/3) ... [2024-11-09 06:28:57,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b558bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:28:57, skipping insertion in model container [2024-11-09 06:28:57,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:28:57" (3/3) ... [2024-11-09 06:28:57,244 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_inw.i [2024-11-09 06:28:57,262 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:28:57,262 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 206 error locations. [2024-11-09 06:28:57,336 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:28:57,345 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=None, 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;@33666f55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:28:57,346 INFO L334 AbstractCegarLoop]: Starting to check reachability of 206 error locations. [2024-11-09 06:28:57,353 INFO L276 IsEmpty]: Start isEmpty. Operand has 584 states, 273 states have (on average 2.0) internal successors, (546), 485 states have internal predecessors, (546), 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 06:28:57,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 06:28:57,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:28:57,361 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 06:28:57,361 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 203 more)] === [2024-11-09 06:28:57,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:28:57,367 INFO L85 PathProgramCache]: Analyzing trace with hash 44633647, now seen corresponding path program 1 times [2024-11-09 06:28:57,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:28:57,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341576904] [2024-11-09 06:28:57,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:28:57,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:29:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:29:01,818 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 06:29:01,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:29:01,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341576904] [2024-11-09 06:29:01,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341576904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:29:01,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:29:01,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:29:01,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649786956] [2024-11-09 06:29:01,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:29:01,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:29:01,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:29:01,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:29:01,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:29:01,867 INFO L87 Difference]: Start difference. First operand has 584 states, 273 states have (on average 2.0) internal successors, (546), 485 states have internal predecessors, (546), 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 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:29:04,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:29:04,362 INFO L93 Difference]: Finished difference Result 1053 states and 1257 transitions. [2024-11-09 06:29:04,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:29:04,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-09 06:29:04,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:29:04,395 INFO L225 Difference]: With dead ends: 1053 [2024-11-09 06:29:04,397 INFO L226 Difference]: Without dead ends: 1051 [2024-11-09 06:29:04,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:29:04,404 INFO L432 NwaCegarLoop]: 534 mSDtfsCounter, 594 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:29:04,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 1702 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-09 06:29:04,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2024-11-09 06:29:04,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 857. [2024-11-09 06:29:04,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 463 states have (on average 1.9892008639308856) internal successors, (921), 686 states have internal predecessors, (921), 138 states have call successors, (138), 50 states have call predecessors, (138), 50 states have return successors, (138), 131 states have call predecessors, (138), 138 states have call successors, (138) [2024-11-09 06:29:04,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1197 transitions. [2024-11-09 06:29:04,558 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1197 transitions. Word has length 4 [2024-11-09 06:29:04,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:29:04,558 INFO L471 AbstractCegarLoop]: Abstraction has 857 states and 1197 transitions. [2024-11-09 06:29:04,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:29:04,559 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1197 transitions. [2024-11-09 06:29:04,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 06:29:04,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:29:04,559 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 06:29:04,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:29:04,560 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 203 more)] === [2024-11-09 06:29:04,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:29:04,561 INFO L85 PathProgramCache]: Analyzing trace with hash 44633648, now seen corresponding path program 1 times [2024-11-09 06:29:04,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:29:04,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464481722] [2024-11-09 06:29:04,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:29:04,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:29:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:29:08,866 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 06:29:08,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:29:08,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464481722] [2024-11-09 06:29:08,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464481722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:29:08,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:29:08,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:29:08,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836511685] [2024-11-09 06:29:08,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:29:08,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:29:08,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:29:08,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:29:08,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:29:08,873 INFO L87 Difference]: Start difference. First operand 857 states and 1197 transitions. Second operand has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:29:10,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:29:10,942 INFO L93 Difference]: Finished difference Result 979 states and 1279 transitions. [2024-11-09 06:29:10,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:29:10,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-09 06:29:10,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:29:10,957 INFO L225 Difference]: With dead ends: 979 [2024-11-09 06:29:10,958 INFO L226 Difference]: Without dead ends: 979 [2024-11-09 06:29:10,958 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:29:10,960 INFO L432 NwaCegarLoop]: 637 mSDtfsCounter, 244 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 06:29:10,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 1949 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 06:29:10,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2024-11-09 06:29:11,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 919. [2024-11-09 06:29:11,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 493 states have (on average 1.949290060851927) internal successors, (961), 717 states have internal predecessors, (961), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2024-11-09 06:29:11,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1275 transitions. [2024-11-09 06:29:11,028 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1275 transitions. Word has length 4 [2024-11-09 06:29:11,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:29:11,028 INFO L471 AbstractCegarLoop]: Abstraction has 919 states and 1275 transitions. [2024-11-09 06:29:11,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:29:11,029 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1275 transitions. [2024-11-09 06:29:11,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 06:29:11,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:29:11,029 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:29:11,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 06:29:11,032 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 203 more)] === [2024-11-09 06:29:11,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:29:11,036 INFO L85 PathProgramCache]: Analyzing trace with hash 216166981, now seen corresponding path program 1 times [2024-11-09 06:29:11,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:29:11,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550957226] [2024-11-09 06:29:11,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:29:11,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:29:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:29:14,733 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 06:29:14,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:29:14,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550957226] [2024-11-09 06:29:14,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550957226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:29:14,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:29:14,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:29:14,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308175687] [2024-11-09 06:29:14,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:29:14,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:29:14,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:29:14,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:29:14,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:29:14,739 INFO L87 Difference]: Start difference. First operand 919 states and 1275 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:29:15,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:29:15,944 INFO L93 Difference]: Finished difference Result 1106 states and 1328 transitions. [2024-11-09 06:29:15,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:29:15,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-09 06:29:15,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:29:15,950 INFO L225 Difference]: With dead ends: 1106 [2024-11-09 06:29:15,950 INFO L226 Difference]: Without dead ends: 1106 [2024-11-09 06:29:15,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 06:29:15,952 INFO L432 NwaCegarLoop]: 533 mSDtfsCounter, 577 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:29:15,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 949 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 06:29:15,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2024-11-09 06:29:15,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 918. [2024-11-09 06:29:15,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 493 states have (on average 1.9391480730223123) internal successors, (956), 716 states have internal predecessors, (956), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2024-11-09 06:29:16,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1270 transitions. [2024-11-09 06:29:16,003 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1270 transitions. Word has length 10 [2024-11-09 06:29:16,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:29:16,004 INFO L471 AbstractCegarLoop]: Abstraction has 918 states and 1270 transitions. [2024-11-09 06:29:16,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:29:16,004 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1270 transitions. [2024-11-09 06:29:16,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 06:29:16,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:29:16,005 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:29:16,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 06:29:16,005 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 203 more)] === [2024-11-09 06:29:16,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:29:16,006 INFO L85 PathProgramCache]: Analyzing trace with hash 216166982, now seen corresponding path program 1 times [2024-11-09 06:29:16,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:29:16,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409510301] [2024-11-09 06:29:16,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:29:16,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:29:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:29:20,238 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 06:29:20,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:29:20,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409510301] [2024-11-09 06:29:20,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409510301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:29:20,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:29:20,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:29:20,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056077962] [2024-11-09 06:29:20,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:29:20,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:29:20,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:29:20,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:29:20,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:29:20,243 INFO L87 Difference]: Start difference. First operand 918 states and 1270 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:29:21,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:29:21,628 INFO L93 Difference]: Finished difference Result 983 states and 1285 transitions. [2024-11-09 06:29:21,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:29:21,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-09 06:29:21,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:29:21,636 INFO L225 Difference]: With dead ends: 983 [2024-11-09 06:29:21,637 INFO L226 Difference]: Without dead ends: 983 [2024-11-09 06:29:21,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:29:21,639 INFO L432 NwaCegarLoop]: 634 mSDtfsCounter, 242 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:29:21,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 1486 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 06:29:21,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2024-11-09 06:29:21,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 923. [2024-11-09 06:29:21,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 498 states have (on average 1.929718875502008) internal successors, (961), 721 states have internal predecessors, (961), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2024-11-09 06:29:21,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1275 transitions. [2024-11-09 06:29:21,693 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1275 transitions. Word has length 10 [2024-11-09 06:29:21,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:29:21,693 INFO L471 AbstractCegarLoop]: Abstraction has 923 states and 1275 transitions. [2024-11-09 06:29:21,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:29:21,694 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1275 transitions. [2024-11-09 06:29:21,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 06:29:21,694 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:29:21,697 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:29:21,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 06:29:21,698 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 203 more)] === [2024-11-09 06:29:21,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:29:21,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1706714796, now seen corresponding path program 1 times [2024-11-09 06:29:21,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:29:21,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187276945] [2024-11-09 06:29:21,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:29:21,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:29:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:29:25,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:29:25,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:29:25,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187276945] [2024-11-09 06:29:25,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187276945] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:29:25,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872952965] [2024-11-09 06:29:25,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:29:25,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:29:25,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0de45dbd-7972-4c2e-bfbf-5e08acf79ee9/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:29:25,539 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0de45dbd-7972-4c2e-bfbf-5e08acf79ee9/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:29:25,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0de45dbd-7972-4c2e-bfbf-5e08acf79ee9/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:29:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:29:29,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 5471 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 06:29:29,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:29:30,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:29:30,028 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:29:30,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:29:30,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872952965] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:29:30,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [502820359] [2024-11-09 06:29:30,223 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 06:29:30,224 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:29:30,229 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:29:30,236 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:29:30,237 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:31:23,016 WARN L286 SmtUtils]: Spent 8.57s 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 06:32:44,510 WARN L286 SmtUtils]: Spent 5.88s 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 06:33:49,686 WARN L286 SmtUtils]: Spent 8.11s 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 06:35:18,877 WARN L286 SmtUtils]: Spent 5.84s 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 06:35:58,493 WARN L286 SmtUtils]: Spent 13.55s on a formula simplification that was a NOOP. DAG size: 11414 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-09 06:36:12,084 WARN L286 SmtUtils]: Spent 13.57s on a formula simplification that was a NOOP. DAG size: 11414 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-09 06:36:33,459 WARN L286 SmtUtils]: Spent 21.33s on a formula simplification. DAG size of input: 11415 DAG size of output: 11415 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-09 06:36:47,405 WARN L286 SmtUtils]: Spent 13.93s on a formula simplification that was a NOOP. DAG size: 11414 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-09 06:37:01,028 WARN L286 SmtUtils]: Spent 13.61s on a formula simplification that was a NOOP. DAG size: 11414 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-09 06:37:21,476 WARN L286 SmtUtils]: Spent 20.43s on a formula simplification. DAG size of input: 11415 DAG size of output: 11415 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)