./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_all.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21829d7d-a1c0-4eb6-a272-0c460e10d1eb/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21829d7d-a1c0-4eb6-a272-0c460e10d1eb/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21829d7d-a1c0-4eb6-a272-0c460e10d1eb/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21829d7d-a1c0-4eb6-a272-0c460e10d1eb/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_all.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21829d7d-a1c0-4eb6-a272-0c460e10d1eb/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21829d7d-a1c0-4eb6-a272-0c460e10d1eb/bin/utaipan-verify-sOmjnqqW8E --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 a564ea576763c13bfd3673da7d9fb82b1799f9ec9208539e745949eb812373cd --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 02:42:14,022 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 02:42:14,123 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21829d7d-a1c0-4eb6-a272-0c460e10d1eb/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-14 02:42:14,130 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 02:42:14,131 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 02:42:14,167 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 02:42:14,169 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 02:42:14,169 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 02:42:14,170 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 02:42:14,170 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 02:42:14,170 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 02:42:14,171 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 02:42:14,171 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 02:42:14,171 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 02:42:14,171 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 02:42:14,172 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 02:42:14,173 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 02:42:14,173 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 02:42:14,173 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 02:42:14,173 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 02:42:14,173 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 02:42:14,173 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 02:42:14,174 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 02:42:14,174 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 02:42:14,174 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 02:42:14,174 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 02:42:14,174 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 02:42:14,174 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 02:42:14,175 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 02:42:14,175 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 02:42:14,175 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 02:42:14,175 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 02:42:14,176 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 02:42:14,176 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 02:42:14,176 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 02:42:14,176 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 02:42:14,176 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 02:42:14,177 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 02:42:14,177 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 02:42:14,177 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 02:42:14,177 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 02:42:14,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:42:14,178 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 02:42:14,178 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 02:42:14,178 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 02:42:14,178 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 02:42:14,178 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 02:42:14,178 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 02:42:14,178 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 02:42:14,179 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_21829d7d-a1c0-4eb6-a272-0c460e10d1eb/bin/utaipan-verify-sOmjnqqW8E 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 -> a564ea576763c13bfd3673da7d9fb82b1799f9ec9208539e745949eb812373cd [2024-11-14 02:42:14,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 02:42:14,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 02:42:14,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 02:42:14,539 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 02:42:14,540 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 02:42:14,541 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21829d7d-a1c0-4eb6-a272-0c460e10d1eb/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_all.i Unable to find full path for "g++" [2024-11-14 02:42:16,476 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 02:42:16,919 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 02:42:16,922 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21829d7d-a1c0-4eb6-a272-0c460e10d1eb/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_all.i [2024-11-14 02:42:16,956 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21829d7d-a1c0-4eb6-a272-0c460e10d1eb/bin/utaipan-verify-sOmjnqqW8E/data/b9a98de14/5bd0ef038a07413fbe31a2adbc907595/FLAGddb40db64 [2024-11-14 02:42:16,971 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21829d7d-a1c0-4eb6-a272-0c460e10d1eb/bin/utaipan-verify-sOmjnqqW8E/data/b9a98de14/5bd0ef038a07413fbe31a2adbc907595 [2024-11-14 02:42:16,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 02:42:16,975 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 02:42:16,977 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 02:42:16,977 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 02:42:16,982 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 02:42:16,983 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:42:16" (1/1) ... [2024-11-14 02:42:16,984 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8c47cd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:16, skipping insertion in model container [2024-11-14 02:42:16,984 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:42:16" (1/1) ... [2024-11-14 02:42:17,054 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 02:42:18,325 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:18,364 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:18,405 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:18,534 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:18,586 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:18,587 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:42:18,671 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 02:42:18,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:42:19,187 INFO L204 MainTranslator]: Completed translation [2024-11-14 02:42:19,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:19 WrapperNode [2024-11-14 02:42:19,189 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 02:42:19,190 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 02:42:19,191 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 02:42:19,192 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 02:42:19,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:19" (1/1) ... [2024-11-14 02:42:19,295 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:19" (1/1) ... [2024-11-14 02:42:19,517 INFO L138 Inliner]: procedures = 474, calls = 2708, calls flagged for inlining = 56, calls inlined = 38, statements flattened = 3403 [2024-11-14 02:42:19,517 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 02:42:19,518 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 02:42:19,518 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 02:42:19,518 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 02:42:19,527 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:19" (1/1) ... [2024-11-14 02:42:19,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:19" (1/1) ... [2024-11-14 02:42:19,570 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:19" (1/1) ... [2024-11-14 02:42:19,570 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:19" (1/1) ... [2024-11-14 02:42:19,684 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:19" (1/1) ... [2024-11-14 02:42:19,701 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:19" (1/1) ... [2024-11-14 02:42:19,722 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:19" (1/1) ... [2024-11-14 02:42:19,739 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:19" (1/1) ... [2024-11-14 02:42:19,771 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 02:42:19,774 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 02:42:19,774 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 02:42:19,774 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 02:42:19,775 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:19" (1/1) ... [2024-11-14 02:42:19,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:42:19,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21829d7d-a1c0-4eb6-a272-0c460e10d1eb/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:42:19,811 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21829d7d-a1c0-4eb6-a272-0c460e10d1eb/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 02:42:19,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21829d7d-a1c0-4eb6-a272-0c460e10d1eb/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 02:42:19,847 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2024-11-14 02:42:19,848 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2024-11-14 02:42:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-14 02:42:19,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2024-11-14 02:42:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2024-11-14 02:42:19,848 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2024-11-14 02:42:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 02:42:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2024-11-14 02:42:19,849 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2024-11-14 02:42:19,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-14 02:42:19,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2024-11-14 02:42:19,849 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2024-11-14 02:42:19,849 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2024-11-14 02:42:19,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 02:42:19,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 02:42:19,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 02:42:19,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 02:42:19,851 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2024-11-14 02:42:19,851 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2024-11-14 02:42:19,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 02:42:19,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 02:42:19,851 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-14 02:42:19,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-14 02:42:19,851 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2024-11-14 02:42:19,851 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2024-11-14 02:42:19,851 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2024-11-14 02:42:19,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2024-11-14 02:42:19,851 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2024-11-14 02:42:19,851 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2024-11-14 02:42:19,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 02:42:19,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 02:42:19,851 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2024-11-14 02:42:19,851 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2024-11-14 02:42:19,852 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 02:42:19,852 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 02:42:19,852 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2024-11-14 02:42:19,852 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2024-11-14 02:42:19,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 02:42:19,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 02:42:19,852 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2024-11-14 02:42:19,852 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2024-11-14 02:42:19,852 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2024-11-14 02:42:19,855 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2024-11-14 02:42:19,855 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2024-11-14 02:42:19,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2024-11-14 02:42:19,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 02:42:19,855 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-14 02:42:19,855 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-14 02:42:19,855 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2024-11-14 02:42:19,855 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2024-11-14 02:42:19,855 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2024-11-14 02:42:19,855 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2024-11-14 02:42:19,856 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2024-11-14 02:42:19,856 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2024-11-14 02:42:19,856 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2024-11-14 02:42:19,856 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2024-11-14 02:42:19,856 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2024-11-14 02:42:19,856 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2024-11-14 02:42:19,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 02:42:19,856 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2024-11-14 02:42:19,856 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2024-11-14 02:42:19,856 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2024-11-14 02:42:19,856 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2024-11-14 02:42:19,856 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2024-11-14 02:42:19,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2024-11-14 02:42:19,856 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2024-11-14 02:42:19,856 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2024-11-14 02:42:19,856 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-14 02:42:19,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-14 02:42:19,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 02:42:20,404 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 02:42:20,408 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 02:42:27,644 INFO L? ?]: Removed 651 outVars from TransFormulas that were not future-live. [2024-11-14 02:42:27,644 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 02:42:28,716 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 02:42:28,720 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-14 02:42:28,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:42:28 BoogieIcfgContainer [2024-11-14 02:42:28,721 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 02:42:28,723 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 02:42:28,726 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 02:42:28,730 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 02:42:28,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 02:42:16" (1/3) ... [2024-11-14 02:42:28,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c044ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:42:28, skipping insertion in model container [2024-11-14 02:42:28,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:19" (2/3) ... [2024-11-14 02:42:28,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c044ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:42:28, skipping insertion in model container [2024-11-14 02:42:28,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:42:28" (3/3) ... [2024-11-14 02:42:28,733 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_all.i [2024-11-14 02:42:28,752 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 02:42:28,755 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG ddv_machzwd_all.i that has 30 procedures, 590 locations, 1 initial locations, 4 loop locations, and 206 error locations. [2024-11-14 02:42:28,824 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 02:42:28,842 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;@2330c330, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 02:42:28,842 INFO L334 AbstractCegarLoop]: Starting to check reachability of 206 error locations. [2024-11-14 02:42:28,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 586 states, 271 states have (on average 1.996309963099631) internal successors, (541), 483 states have internal predecessors, (541), 81 states have call successors, (81), 27 states have call predecessors, (81), 27 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-14 02:42:28,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 02:42:28,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:28,857 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 02:42:28,858 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)] === [2024-11-14 02:42:28,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:28,864 INFO L85 PathProgramCache]: Analyzing trace with hash 45001710, now seen corresponding path program 1 times [2024-11-14 02:42:28,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:28,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880917636] [2024-11-14 02:42:28,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:28,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:33,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:33,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:33,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880917636] [2024-11-14 02:42:33,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880917636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:33,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:33,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:42:33,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147171154] [2024-11-14 02:42:33,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:33,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 02:42:33,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:33,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 02:42:33,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:42:33,883 INFO L87 Difference]: Start difference. First operand has 586 states, 271 states have (on average 1.996309963099631) internal successors, (541), 483 states have internal predecessors, (541), 81 states have call successors, (81), 27 states have call predecessors, (81), 27 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) 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) [2024-11-14 02:42:36,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:36,272 INFO L93 Difference]: Finished difference Result 1061 states and 1265 transitions. [2024-11-14 02:42:36,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 02:42:36,275 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 [2024-11-14 02:42:36,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:36,301 INFO L225 Difference]: With dead ends: 1061 [2024-11-14 02:42:36,301 INFO L226 Difference]: Without dead ends: 1059 [2024-11-14 02:42:36,303 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 [2024-11-14 02:42:36,307 INFO L432 NwaCegarLoop]: 572 mSDtfsCounter, 595 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 1796 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:36,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 1796 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-14 02:42:36,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2024-11-14 02:42:36,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 865. [2024-11-14 02:42:36,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 463 states have (on average 1.980561555075594) internal successors, (917), 686 states have internal predecessors, (917), 144 states have call successors, (144), 52 states have call predecessors, (144), 52 states have return successors, (144), 137 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-14 02:42:36,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1205 transitions. [2024-11-14 02:42:36,480 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1205 transitions. Word has length 4 [2024-11-14 02:42:36,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:36,480 INFO L471 AbstractCegarLoop]: Abstraction has 865 states and 1205 transitions. [2024-11-14 02:42:36,480 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) [2024-11-14 02:42:36,481 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1205 transitions. [2024-11-14 02:42:36,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 02:42:36,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:36,481 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 02:42:36,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 02:42:36,482 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)] === [2024-11-14 02:42:36,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:36,482 INFO L85 PathProgramCache]: Analyzing trace with hash 45001711, now seen corresponding path program 1 times [2024-11-14 02:42:36,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:36,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506860809] [2024-11-14 02:42:36,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:36,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:40,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:40,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:40,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506860809] [2024-11-14 02:42:40,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506860809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:40,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:40,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:42:40,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907812995] [2024-11-14 02:42:40,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:40,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 02:42:40,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:40,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 02:42:40,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:42:40,700 INFO L87 Difference]: Start difference. First operand 865 states and 1205 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) [2024-11-14 02:42:42,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:42,450 INFO L93 Difference]: Finished difference Result 995 states and 1297 transitions. [2024-11-14 02:42:42,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 02:42:42,451 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 [2024-11-14 02:42:42,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:42,463 INFO L225 Difference]: With dead ends: 995 [2024-11-14 02:42:42,464 INFO L226 Difference]: Without dead ends: 995 [2024-11-14 02:42:42,465 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 [2024-11-14 02:42:42,466 INFO L432 NwaCegarLoop]: 625 mSDtfsCounter, 248 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:42,468 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 1915 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-14 02:42:42,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2024-11-14 02:42:42,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 935. [2024-11-14 02:42:42,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 497 states have (on average 1.9336016096579476) internal successors, (961), 721 states have internal predecessors, (961), 166 states have call successors, (166), 66 states have call predecessors, (166), 66 states have return successors, (166), 159 states have call predecessors, (166), 166 states have call successors, (166) [2024-11-14 02:42:42,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1293 transitions. [2024-11-14 02:42:42,513 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1293 transitions. Word has length 4 [2024-11-14 02:42:42,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:42,513 INFO L471 AbstractCegarLoop]: Abstraction has 935 states and 1293 transitions. [2024-11-14 02:42:42,513 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) [2024-11-14 02:42:42,513 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1293 transitions. [2024-11-14 02:42:42,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 02:42:42,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:42,514 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:42,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 02:42:42,514 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)] === [2024-11-14 02:42:42,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:42,515 INFO L85 PathProgramCache]: Analyzing trace with hash 685502484, now seen corresponding path program 1 times [2024-11-14 02:42:42,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:42,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316954417] [2024-11-14 02:42:42,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:42,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:45,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:45,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:45,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316954417] [2024-11-14 02:42:45,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316954417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:45,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:45,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:42:45,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967728002] [2024-11-14 02:42:45,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:45,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:42:45,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:45,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:42:45,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:42:45,520 INFO L87 Difference]: Start difference. First operand 935 states and 1293 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-11-14 02:42:46,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:46,725 INFO L93 Difference]: Finished difference Result 1122 states and 1346 transitions. [2024-11-14 02:42:46,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:42:46,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 9 [2024-11-14 02:42:46,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:46,736 INFO L225 Difference]: With dead ends: 1122 [2024-11-14 02:42:46,736 INFO L226 Difference]: Without dead ends: 1122 [2024-11-14 02:42:46,737 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 [2024-11-14 02:42:46,738 INFO L432 NwaCegarLoop]: 522 mSDtfsCounter, 579 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:46,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 944 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 02:42:46,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2024-11-14 02:42:46,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 934. [2024-11-14 02:42:46,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 497 states have (on average 1.9235412474849094) internal successors, (956), 720 states have internal predecessors, (956), 166 states have call successors, (166), 66 states have call predecessors, (166), 66 states have return successors, (166), 159 states have call predecessors, (166), 166 states have call successors, (166) [2024-11-14 02:42:46,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1288 transitions. [2024-11-14 02:42:46,807 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1288 transitions. Word has length 9 [2024-11-14 02:42:46,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:46,808 INFO L471 AbstractCegarLoop]: Abstraction has 934 states and 1288 transitions. [2024-11-14 02:42:46,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-11-14 02:42:46,808 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1288 transitions. [2024-11-14 02:42:46,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 02:42:46,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:46,810 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:46,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 02:42:46,811 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)] === [2024-11-14 02:42:46,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:46,811 INFO L85 PathProgramCache]: Analyzing trace with hash 685502485, now seen corresponding path program 1 times [2024-11-14 02:42:46,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:46,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757887787] [2024-11-14 02:42:46,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:46,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:50,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:50,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:50,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757887787] [2024-11-14 02:42:50,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757887787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:50,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:50,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:42:50,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735878595] [2024-11-14 02:42:50,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:50,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:42:50,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:50,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:42:50,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:42:50,359 INFO L87 Difference]: Start difference. First operand 934 states and 1288 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2024-11-14 02:42:51,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:51,577 INFO L93 Difference]: Finished difference Result 997 states and 1301 transitions. [2024-11-14 02:42:51,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:42:51,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 9 [2024-11-14 02:42:51,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:51,586 INFO L225 Difference]: With dead ends: 997 [2024-11-14 02:42:51,587 INFO L226 Difference]: Without dead ends: 997 [2024-11-14 02:42:51,587 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 [2024-11-14 02:42:51,588 INFO L432 NwaCegarLoop]: 624 mSDtfsCounter, 245 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:51,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 1476 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 02:42:51,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2024-11-14 02:42:51,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 937. [2024-11-14 02:42:51,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 500 states have (on average 1.918) internal successors, (959), 723 states have internal predecessors, (959), 166 states have call successors, (166), 66 states have call predecessors, (166), 66 states have return successors, (166), 159 states have call predecessors, (166), 166 states have call successors, (166) [2024-11-14 02:42:51,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1291 transitions. [2024-11-14 02:42:51,643 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1291 transitions. Word has length 9 [2024-11-14 02:42:51,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:51,644 INFO L471 AbstractCegarLoop]: Abstraction has 937 states and 1291 transitions. [2024-11-14 02:42:51,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2024-11-14 02:42:51,644 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1291 transitions. [2024-11-14 02:42:51,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 02:42:51,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:51,648 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:51,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 02:42:51,648 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)] === [2024-11-14 02:42:51,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:51,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1638933961, now seen corresponding path program 1 times [2024-11-14 02:42:51,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:51,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933610325] [2024-11-14 02:42:51,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:51,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:54,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:54,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:54,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933610325] [2024-11-14 02:42:54,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933610325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:42:54,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718135321] [2024-11-14 02:42:54,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:54,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:42:54,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21829d7d-a1c0-4eb6-a272-0c460e10d1eb/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:42:54,862 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21829d7d-a1c0-4eb6-a272-0c460e10d1eb/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:42:54,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21829d7d-a1c0-4eb6-a272-0c460e10d1eb/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 02:42:58,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:58,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 5517 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 02:42:58,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:42:58,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:58,803 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:42:58,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:58,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718135321] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:42:58,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [915191785] [2024-11-14 02:42:58,965 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-14 02:42:58,965 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:42:58,970 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:42:58,976 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:42:58,976 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 02:45:10,068 WARN L286 SmtUtils]: Spent 10.96s on a formula simplification that was a NOOP. DAG size: 4271 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 02:46:45,929 WARN L286 SmtUtils]: Spent 7.07s on a formula simplification that was a NOOP. DAG size: 4271 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 02:48:10,051 WARN L286 SmtUtils]: Spent 9.69s on a formula simplification that was a NOOP. DAG size: 4271 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 02:49:49,446 WARN L286 SmtUtils]: Spent 6.49s on a formula simplification that was a NOOP. DAG size: 4271 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 02:50:32,771 WARN L286 SmtUtils]: Spent 14.33s on a formula simplification that was a NOOP. DAG size: 11462 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 02:50:47,731 WARN L286 SmtUtils]: Spent 14.94s on a formula simplification that was a NOOP. DAG size: 11462 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 02:51:09,384 WARN L286 SmtUtils]: Spent 21.61s on a formula simplification. DAG size of input: 11463 DAG size of output: 11463 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 02:51:23,394 WARN L286 SmtUtils]: Spent 14.00s on a formula simplification that was a NOOP. DAG size: 11462 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 02:51:37,161 WARN L286 SmtUtils]: Spent 13.76s on a formula simplification that was a NOOP. DAG size: 11462 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 02:51:57,590 WARN L286 SmtUtils]: Spent 20.39s on a formula simplification. DAG size of input: 11463 DAG size of output: 11463 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)