./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.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_632bce3a-e6d0-4496-9a30-8e4eb39cab86/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_632bce3a-e6d0-4496-9a30-8e4eb39cab86/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_632bce3a-e6d0-4496-9a30-8e4eb39cab86/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_632bce3a-e6d0-4496-9a30-8e4eb39cab86/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_632bce3a-e6d0-4496-9a30-8e4eb39cab86/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_632bce3a-e6d0-4496-9a30-8e4eb39cab86/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 7b53e6434f29888ec2b0851eb0bdc5bf356c532d72069865339d3ff2265f37df --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 01:06:49,584 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 01:06:49,671 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_632bce3a-e6d0-4496-9a30-8e4eb39cab86/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-09 01:06:49,676 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 01:06:49,677 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 01:06:49,704 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 01:06:49,705 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 01:06:49,705 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 01:06:49,706 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 01:06:49,706 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 01:06:49,707 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 01:06:49,708 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 01:06:49,708 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 01:06:49,712 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 01:06:49,713 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 01:06:49,713 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 01:06:49,713 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 01:06:49,714 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 01:06:49,714 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 01:06:49,714 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 01:06:49,715 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 01:06:49,715 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 01:06:49,718 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 01:06:49,718 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 01:06:49,719 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 01:06:49,719 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 01:06:49,719 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 01:06:49,719 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 01:06:49,719 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 01:06:49,720 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 01:06:49,720 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 01:06:49,720 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 01:06:49,721 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 01:06:49,722 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 01:06:49,722 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 01:06:49,722 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 01:06:49,723 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 01:06:49,723 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 01:06:49,724 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 01:06:49,724 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 01:06:49,724 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 01:06:49,725 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:06:49,725 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 01:06:49,725 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 01:06:49,726 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 01:06:49,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 01:06:49,726 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 01:06:49,726 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 01:06:49,726 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 01:06:49,727 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_632bce3a-e6d0-4496-9a30-8e4eb39cab86/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_632bce3a-e6d0-4496-9a30-8e4eb39cab86/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b53e6434f29888ec2b0851eb0bdc5bf356c532d72069865339d3ff2265f37df [2024-11-09 01:06:50,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 01:06:50,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 01:06:50,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 01:06:50,054 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 01:06:50,055 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 01:06:50,056 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_632bce3a-e6d0-4496-9a30-8e4eb39cab86/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i Unable to find full path for "g++" [2024-11-09 01:06:52,048 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 01:06:52,452 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 01:06:52,453 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_632bce3a-e6d0-4496-9a30-8e4eb39cab86/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i [2024-11-09 01:06:52,478 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_632bce3a-e6d0-4496-9a30-8e4eb39cab86/bin/utaipan-verify-YMUCfTKeje/data/ddbadb31a/bf76a7fadec04c8998e440e3f089cad1/FLAGeb834db58 [2024-11-09 01:06:52,633 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_632bce3a-e6d0-4496-9a30-8e4eb39cab86/bin/utaipan-verify-YMUCfTKeje/data/ddbadb31a/bf76a7fadec04c8998e440e3f089cad1 [2024-11-09 01:06:52,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 01:06:52,640 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 01:06:52,643 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 01:06:52,644 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 01:06:52,651 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 01:06:52,651 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:06:52" (1/1) ... [2024-11-09 01:06:52,653 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cd861d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:06:52, skipping insertion in model container [2024-11-09 01:06:52,657 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:06:52" (1/1) ... [2024-11-09 01:06:52,770 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 01:06:54,083 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 01:06:54,134 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 01:06:54,168 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 01:06:54,323 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 01:06:54,373 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 01:06:54,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:06:54,504 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 01:06:54,715 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:06:54,951 INFO L204 MainTranslator]: Completed translation [2024-11-09 01:06:54,951 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:06:54 WrapperNode [2024-11-09 01:06:54,952 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 01:06:54,953 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 01:06:54,953 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 01:06:54,953 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 01:06:54,964 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:06:54" (1/1) ... [2024-11-09 01:06:55,071 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:06:54" (1/1) ... [2024-11-09 01:06:55,316 INFO L138 Inliner]: procedures = 472, calls = 2681, calls flagged for inlining = 55, calls inlined = 37, statements flattened = 3380 [2024-11-09 01:06:55,316 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 01:06:55,317 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 01:06:55,317 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 01:06:55,318 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 01:06:55,331 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:06:54" (1/1) ... [2024-11-09 01:06:55,335 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:06:54" (1/1) ... [2024-11-09 01:06:55,379 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:06:54" (1/1) ... [2024-11-09 01:06:55,380 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:06:54" (1/1) ... [2024-11-09 01:06:55,473 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:06:54" (1/1) ... [2024-11-09 01:06:55,495 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:06:54" (1/1) ... [2024-11-09 01:06:55,521 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:06:54" (1/1) ... [2024-11-09 01:06:55,537 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:06:54" (1/1) ... [2024-11-09 01:06:55,565 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 01:06:55,567 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 01:06:55,567 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 01:06:55,567 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 01:06:55,568 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:06:54" (1/1) ... [2024-11-09 01:06:55,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:06:55,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_632bce3a-e6d0-4496-9a30-8e4eb39cab86/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:06:55,609 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_632bce3a-e6d0-4496-9a30-8e4eb39cab86/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 01:06:55,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_632bce3a-e6d0-4496-9a30-8e4eb39cab86/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 01:06:55,648 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2024-11-09 01:06:55,648 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2024-11-09 01:06:55,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 01:06:55,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2024-11-09 01:06:55,649 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2024-11-09 01:06:55,649 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2024-11-09 01:06:55,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 01:06:55,649 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2024-11-09 01:06:55,649 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2024-11-09 01:06:55,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 01:06:55,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2024-11-09 01:06:55,650 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2024-11-09 01:06:55,650 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2024-11-09 01:06:55,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 01:06:55,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 01:06:55,650 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2024-11-09 01:06:55,650 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2024-11-09 01:06:55,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 01:06:55,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 01:06:55,650 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-09 01:06:55,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-09 01:06:55,651 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2024-11-09 01:06:55,651 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2024-11-09 01:06:55,651 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2024-11-09 01:06:55,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2024-11-09 01:06:55,651 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2024-11-09 01:06:55,651 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2024-11-09 01:06:55,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 01:06:55,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 01:06:55,652 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2024-11-09 01:06:55,652 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2024-11-09 01:06:55,652 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 01:06:55,652 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 01:06:55,652 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2024-11-09 01:06:55,652 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2024-11-09 01:06:55,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 01:06:55,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 01:06:55,654 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2024-11-09 01:06:55,654 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2024-11-09 01:06:55,654 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2024-11-09 01:06:55,654 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2024-11-09 01:06:55,654 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2024-11-09 01:06:55,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2024-11-09 01:06:55,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 01:06:55,655 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-09 01:06:55,655 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-09 01:06:55,655 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2024-11-09 01:06:55,655 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2024-11-09 01:06:55,655 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2024-11-09 01:06:55,656 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2024-11-09 01:06:55,656 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2024-11-09 01:06:55,656 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2024-11-09 01:06:55,656 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2024-11-09 01:06:55,656 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2024-11-09 01:06:55,656 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2024-11-09 01:06:55,657 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2024-11-09 01:06:55,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 01:06:55,657 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2024-11-09 01:06:55,658 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2024-11-09 01:06:55,658 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2024-11-09 01:06:55,658 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2024-11-09 01:06:55,658 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2024-11-09 01:06:55,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2024-11-09 01:06:55,658 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2024-11-09 01:06:55,659 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2024-11-09 01:06:55,659 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-09 01:06:55,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-09 01:06:55,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 01:06:56,077 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 01:06:56,082 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 01:07:02,476 INFO L? ?]: Removed 653 outVars from TransFormulas that were not future-live. [2024-11-09 01:07:02,477 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 01:07:03,231 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 01:07:03,234 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 01:07:03,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:07:03 BoogieIcfgContainer [2024-11-09 01:07:03,235 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 01:07:03,237 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 01:07:03,237 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 01:07:03,242 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 01:07:03,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 01:06:52" (1/3) ... [2024-11-09 01:07:03,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2fe4d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:07:03, skipping insertion in model container [2024-11-09 01:07:03,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:06:54" (2/3) ... [2024-11-09 01:07:03,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2fe4d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:07:03, skipping insertion in model container [2024-11-09 01:07:03,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:07:03" (3/3) ... [2024-11-09 01:07:03,247 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_outw_p.i [2024-11-09 01:07:03,265 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 01:07:03,265 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 205 error locations. [2024-11-09 01:07:03,342 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 01:07:03,350 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;@d3a86db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 01:07:03,351 INFO L334 AbstractCegarLoop]: Starting to check reachability of 205 error locations. [2024-11-09 01:07:03,359 INFO L276 IsEmpty]: Start isEmpty. Operand has 580 states, 270 states have (on average 2.0037037037037035) internal successors, (541), 481 states have internal predecessors, (541), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-09 01:07:03,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 01:07:03,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:07:03,368 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 01:07:03,370 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 202 more)] === [2024-11-09 01:07:03,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:07:03,376 INFO L85 PathProgramCache]: Analyzing trace with hash 44141615, now seen corresponding path program 1 times [2024-11-09 01:07:03,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:07:03,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048432844] [2024-11-09 01:07:03,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:07:03,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:07:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:07:07,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:07:07,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:07:07,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048432844] [2024-11-09 01:07:07,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048432844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:07:07,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:07:07,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:07:07,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480174407] [2024-11-09 01:07:07,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:07:07,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 01:07:07,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:07:07,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 01:07:07,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 01:07:07,693 INFO L87 Difference]: Start difference. First operand has 580 states, 270 states have (on average 2.0037037037037035) internal successors, (541), 481 states have internal predecessors, (541), 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 01:07:09,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:07:09,932 INFO L93 Difference]: Finished difference Result 1045 states and 1249 transitions. [2024-11-09 01:07:09,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 01:07:09,936 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 01:07:09,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:07:09,964 INFO L225 Difference]: With dead ends: 1045 [2024-11-09 01:07:09,964 INFO L226 Difference]: Without dead ends: 1043 [2024-11-09 01:07:09,966 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 01:07:09,972 INFO L432 NwaCegarLoop]: 553 mSDtfsCounter, 590 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:07:09,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 1753 Invalid, 1301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 01:07:09,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2024-11-09 01:07:10,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 851. [2024-11-09 01:07:10,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 458 states have (on average 1.9956331877729259) internal successors, (914), 680 states have internal predecessors, (914), 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 01:07:10,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1190 transitions. [2024-11-09 01:07:10,106 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1190 transitions. Word has length 4 [2024-11-09 01:07:10,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:07:10,106 INFO L471 AbstractCegarLoop]: Abstraction has 851 states and 1190 transitions. [2024-11-09 01:07:10,107 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 01:07:10,107 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1190 transitions. [2024-11-09 01:07:10,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 01:07:10,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:07:10,108 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 01:07:10,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 01:07:10,110 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 202 more)] === [2024-11-09 01:07:10,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:07:10,113 INFO L85 PathProgramCache]: Analyzing trace with hash 44141616, now seen corresponding path program 1 times [2024-11-09 01:07:10,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:07:10,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862153757] [2024-11-09 01:07:10,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:07:10,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:07:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:07:14,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:07:14,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:07:14,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862153757] [2024-11-09 01:07:14,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862153757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:07:14,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:07:14,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:07:14,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230654151] [2024-11-09 01:07:14,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:07:14,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 01:07:14,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:07:14,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 01:07:14,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 01:07:14,388 INFO L87 Difference]: Start difference. First operand 851 states and 1190 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 01:07:16,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:07:16,161 INFO L93 Difference]: Finished difference Result 969 states and 1268 transitions. [2024-11-09 01:07:16,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 01:07:16,162 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 01:07:16,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:07:16,168 INFO L225 Difference]: With dead ends: 969 [2024-11-09 01:07:16,169 INFO L226 Difference]: Without dead ends: 969 [2024-11-09 01:07:16,169 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 01:07:16,170 INFO L432 NwaCegarLoop]: 647 mSDtfsCounter, 240 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 1973 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 01:07:16,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 1973 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 01:07:16,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2024-11-09 01:07:16,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 911. [2024-11-09 01:07:16,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 486 states have (on average 1.9567901234567902) internal successors, (951), 709 states have internal predecessors, (951), 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 01:07:16,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1265 transitions. [2024-11-09 01:07:16,207 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1265 transitions. Word has length 4 [2024-11-09 01:07:16,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:07:16,208 INFO L471 AbstractCegarLoop]: Abstraction has 911 states and 1265 transitions. [2024-11-09 01:07:16,208 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 01:07:16,208 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1265 transitions. [2024-11-09 01:07:16,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 01:07:16,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:07:16,209 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:07:16,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 01:07:16,210 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 202 more)] === [2024-11-09 01:07:16,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:07:16,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1741548101, now seen corresponding path program 1 times [2024-11-09 01:07:16,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:07:16,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331085580] [2024-11-09 01:07:16,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:07:16,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:07:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:07:19,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:07:19,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:07:19,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331085580] [2024-11-09 01:07:19,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331085580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:07:19,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:07:19,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 01:07:19,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335232850] [2024-11-09 01:07:19,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:07:19,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:07:19,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:07:19,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:07:19,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:07:19,670 INFO L87 Difference]: Start difference. First operand 911 states and 1265 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 01:07:20,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:07:20,853 INFO L93 Difference]: Finished difference Result 1096 states and 1317 transitions. [2024-11-09 01:07:20,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:07:20,854 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 01:07:20,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:07:20,861 INFO L225 Difference]: With dead ends: 1096 [2024-11-09 01:07:20,862 INFO L226 Difference]: Without dead ends: 1096 [2024-11-09 01:07:20,863 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 01:07:20,865 INFO L432 NwaCegarLoop]: 531 mSDtfsCounter, 573 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:07:20,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 945 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 01:07:20,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2024-11-09 01:07:20,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 910. [2024-11-09 01:07:20,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 486 states have (on average 1.9465020576131686) internal successors, (946), 708 states have internal predecessors, (946), 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 01:07:20,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1260 transitions. [2024-11-09 01:07:20,927 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1260 transitions. Word has length 10 [2024-11-09 01:07:20,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:07:20,928 INFO L471 AbstractCegarLoop]: Abstraction has 910 states and 1260 transitions. [2024-11-09 01:07:20,928 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 01:07:20,928 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1260 transitions. [2024-11-09 01:07:20,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 01:07:20,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:07:20,929 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:07:20,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 01:07:20,930 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 202 more)] === [2024-11-09 01:07:20,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:07:20,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1741548102, now seen corresponding path program 1 times [2024-11-09 01:07:20,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:07:20,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120823808] [2024-11-09 01:07:20,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:07:20,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:07:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:07:24,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:07:24,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:07:24,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120823808] [2024-11-09 01:07:24,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120823808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:07:24,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:07:24,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:07:24,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203569277] [2024-11-09 01:07:24,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:07:24,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 01:07:24,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:07:24,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 01:07:24,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:07:24,981 INFO L87 Difference]: Start difference. First operand 910 states and 1260 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 01:07:26,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:07:26,150 INFO L93 Difference]: Finished difference Result 973 states and 1274 transitions. [2024-11-09 01:07:26,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 01:07:26,151 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 01:07:26,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:07:26,156 INFO L225 Difference]: With dead ends: 973 [2024-11-09 01:07:26,156 INFO L226 Difference]: Without dead ends: 973 [2024-11-09 01:07:26,157 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 01:07:26,160 INFO L432 NwaCegarLoop]: 644 mSDtfsCounter, 244 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:07:26,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 1140 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 01:07:26,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2024-11-09 01:07:26,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 915. [2024-11-09 01:07:26,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 491 states have (on average 1.9368635437881874) internal successors, (951), 713 states have internal predecessors, (951), 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 01:07:26,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1265 transitions. [2024-11-09 01:07:26,198 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1265 transitions. Word has length 10 [2024-11-09 01:07:26,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:07:26,198 INFO L471 AbstractCegarLoop]: Abstraction has 915 states and 1265 transitions. [2024-11-09 01:07:26,199 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 01:07:26,199 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1265 transitions. [2024-11-09 01:07:26,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 01:07:26,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:07:26,203 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:07:26,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 01:07:26,203 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 202 more)] === [2024-11-09 01:07:26,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:07:26,204 INFO L85 PathProgramCache]: Analyzing trace with hash -713403521, now seen corresponding path program 1 times [2024-11-09 01:07:26,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:07:26,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037379069] [2024-11-09 01:07:26,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:07:26,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:07:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:07:29,744 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 01:07:29,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:07:29,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037379069] [2024-11-09 01:07:29,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037379069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:07:29,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245092494] [2024-11-09 01:07:29,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:07:29,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:07:29,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_632bce3a-e6d0-4496-9a30-8e4eb39cab86/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:07:29,748 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_632bce3a-e6d0-4496-9a30-8e4eb39cab86/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:07:29,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_632bce3a-e6d0-4496-9a30-8e4eb39cab86/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 01:07:33,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:07:33,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 5471 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 01:07:33,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:07:33,481 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 01:07:33,481 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:07:33,610 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 01:07:33,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245092494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:07:33,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1655836943] [2024-11-09 01:07:33,631 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 01:07:33,631 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:07:33,635 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:07:33,642 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:07:33,642 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:09:19,085 WARN L286 SmtUtils]: Spent 8.27s on a formula simplification that was a NOOP. DAG size: 4265 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 01:10:41,524 WARN L286 SmtUtils]: Spent 6.11s 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 01:11:52,322 WARN L286 SmtUtils]: Spent 8.32s on a formula simplification that was a NOOP. DAG size: 4265 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 01:13:20,210 WARN L286 SmtUtils]: Spent 5.90s on a formula simplification that was a NOOP. DAG size: 4265 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 01:14:00,009 WARN L286 SmtUtils]: Spent 13.54s 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 01:14:14,094 WARN L286 SmtUtils]: Spent 14.06s 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 01:14:36,310 WARN L286 SmtUtils]: Spent 22.17s 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 01:14:50,458 WARN L286 SmtUtils]: Spent 14.13s 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 01:15:05,452 WARN L286 SmtUtils]: Spent 14.98s 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 01:15:27,277 WARN L286 SmtUtils]: Spent 21.80s 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)