./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--block--paride--pt.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--block--paride--pt.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0e5349f2aac0388d197fa32950f3e69d3339933dee46585f91772f9bda921aa4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:09:07,610 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:09:07,675 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 17:09:07,679 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:09:07,679 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:09:07,704 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:09:07,704 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:09:07,705 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:09:07,706 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:09:07,706 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:09:07,707 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:09:07,707 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:09:07,708 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:09:07,708 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:09:07,708 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:09:07,709 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:09:07,709 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:09:07,710 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:09:07,710 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:09:07,711 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:09:07,711 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:09:07,712 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:09:07,713 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:09:07,713 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:09:07,714 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:09:07,714 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:09:07,715 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:09:07,715 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:09:07,715 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:09:07,716 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:09:07,716 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:09:07,716 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:09:07,717 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:09:07,717 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:09:07,717 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:09:07,718 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:09:07,718 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:09:07,718 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:09:07,718 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:09:07,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:09:07,719 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:09:07,719 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:09:07,719 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:09:07,719 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:09:07,720 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_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e5349f2aac0388d197fa32950f3e69d3339933dee46585f91772f9bda921aa4 [2023-12-02 17:09:07,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:09:07,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:09:07,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:09:07,972 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:09:07,972 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:09:07,973 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--block--paride--pt.ko-entry_point.cil.out.i [2023-12-02 17:09:10,775 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:09:11,139 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:09:11,139 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--block--paride--pt.ko-entry_point.cil.out.i [2023-12-02 17:09:11,169 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/data/c2817ef79/8f652269f3ae46eda1c7dcb219453626/FLAG5e407fc31 [2023-12-02 17:09:11,183 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/data/c2817ef79/8f652269f3ae46eda1c7dcb219453626 [2023-12-02 17:09:11,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:09:11,187 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:09:11,188 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:09:11,189 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:09:11,194 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:09:11,194 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:09:11" (1/1) ... [2023-12-02 17:09:11,195 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bb9170d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:11, skipping insertion in model container [2023-12-02 17:09:11,196 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:09:11" (1/1) ... [2023-12-02 17:09:11,287 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:09:11,665 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3059] [2023-12-02 17:09:11,665 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3060-3061] [2023-12-02 17:09:11,815 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--block--paride--pt.ko-entry_point.cil.out.i[90990,91003] [2023-12-02 17:09:12,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:09:12,167 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:09:12,236 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3059] [2023-12-02 17:09:12,236 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3060-3061] [2023-12-02 17:09:12,240 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; incl %0": "+m" (v->counter)); [3171] [2023-12-02 17:09:12,242 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; decl %0; sete %1": "+m" (v->counter), "=qm" (c): : "memory"); [3179-3180] [2023-12-02 17:09:12,246 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--block--paride--pt.ko-entry_point.cil.out.i[90990,91003] [2023-12-02 17:09:12,340 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:09:12,377 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:09:12,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:12 WrapperNode [2023-12-02 17:09:12,378 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:09:12,379 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:09:12,379 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:09:12,379 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:09:12,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:12" (1/1) ... [2023-12-02 17:09:12,424 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:12" (1/1) ... [2023-12-02 17:09:12,491 INFO L138 Inliner]: procedures = 119, calls = 789, calls flagged for inlining = 38, calls inlined = 36, statements flattened = 1766 [2023-12-02 17:09:12,491 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:09:12,492 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:09:12,492 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:09:12,492 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:09:12,502 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:12" (1/1) ... [2023-12-02 17:09:12,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:12" (1/1) ... [2023-12-02 17:09:12,518 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:12" (1/1) ... [2023-12-02 17:09:12,519 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:12" (1/1) ... [2023-12-02 17:09:12,579 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:12" (1/1) ... [2023-12-02 17:09:12,596 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:12" (1/1) ... [2023-12-02 17:09:12,609 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:12" (1/1) ... [2023-12-02 17:09:12,622 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:12" (1/1) ... [2023-12-02 17:09:12,643 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:09:12,644 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:09:12,644 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:09:12,645 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:09:12,645 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:12" (1/1) ... [2023-12-02 17:09:12,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:09:12,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:09:12,674 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:09:12,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:09:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure pi_release [2023-12-02 17:09:12,712 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_release [2023-12-02 17:09:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg [2023-12-02 17:09:12,712 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg [2023-12-02 17:09:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure pi_disconnect [2023-12-02 17:09:12,713 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_disconnect [2023-12-02 17:09:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure status_reg [2023-12-02 17:09:12,713 INFO L138 BoogieDeclarations]: Found implementation of procedure status_reg [2023-12-02 17:09:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 17:09:12,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 17:09:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 17:09:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_block [2023-12-02 17:09:12,714 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_block [2023-12-02 17:09:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure read_reg [2023-12-02 17:09:12,714 INFO L138 BoogieDeclarations]: Found implementation of procedure read_reg [2023-12-02 17:09:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure pt_media_access_cmd [2023-12-02 17:09:12,714 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_media_access_cmd [2023-12-02 17:09:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 17:09:12,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 17:09:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure pt_reset [2023-12-02 17:09:12,715 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_reset [2023-12-02 17:09:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure pt_identify [2023-12-02 17:09:12,715 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_identify [2023-12-02 17:09:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure pt_command [2023-12-02 17:09:12,715 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_command [2023-12-02 17:09:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 17:09:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure pt_write [2023-12-02 17:09:12,715 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_write [2023-12-02 17:09:12,716 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-12-02 17:09:12,716 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-12-02 17:09:12,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-12-02 17:09:12,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-12-02 17:09:12,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 17:09:12,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 17:09:12,716 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 17:09:12,716 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 17:09:12,717 INFO L130 BoogieDeclarations]: Found specification of procedure pt_atapi [2023-12-02 17:09:12,717 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_atapi [2023-12-02 17:09:12,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 17:09:12,717 INFO L130 BoogieDeclarations]: Found specification of procedure pt_poll_dsc [2023-12-02 17:09:12,717 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_poll_dsc [2023-12-02 17:09:12,717 INFO L130 BoogieDeclarations]: Found specification of procedure pt_req_sense [2023-12-02 17:09:12,717 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_req_sense [2023-12-02 17:09:12,717 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-12-02 17:09:12,717 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-12-02 17:09:12,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:09:12,718 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-12-02 17:09:12,718 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-12-02 17:09:12,718 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-12-02 17:09:12,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-12-02 17:09:12,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 17:09:12,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 17:09:12,718 INFO L130 BoogieDeclarations]: Found specification of procedure DRIVE [2023-12-02 17:09:12,719 INFO L138 BoogieDeclarations]: Found implementation of procedure DRIVE [2023-12-02 17:09:12,719 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2023-12-02 17:09:12,719 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2023-12-02 17:09:12,719 INFO L130 BoogieDeclarations]: Found specification of procedure pt_completion [2023-12-02 17:09:12,719 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_completion [2023-12-02 17:09:12,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 17:09:12,719 INFO L130 BoogieDeclarations]: Found specification of procedure pt_sleep [2023-12-02 17:09:12,719 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_sleep [2023-12-02 17:09:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure pt_write_fm [2023-12-02 17:09:12,720 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_write_fm [2023-12-02 17:09:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_20 [2023-12-02 17:09:12,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_20 [2023-12-02 17:09:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2023-12-02 17:09:12,720 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2023-12-02 17:09:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure pi_write_block [2023-12-02 17:09:12,720 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_write_block [2023-12-02 17:09:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 17:09:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 17:09:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure pi_init [2023-12-02 17:09:12,721 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_init [2023-12-02 17:09:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_regr [2023-12-02 17:09:12,721 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_regr [2023-12-02 17:09:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-12-02 17:09:12,721 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-12-02 17:09:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 17:09:12,721 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 17:09:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure pt_wait [2023-12-02 17:09:12,722 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_wait [2023-12-02 17:09:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure pi_connect [2023-12-02 17:09:12,722 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_connect [2023-12-02 17:09:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure device_destroy [2023-12-02 17:09:12,722 INFO L138 BoogieDeclarations]: Found implementation of procedure device_destroy [2023-12-02 17:09:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-12-02 17:09:12,722 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-12-02 17:09:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure pt_probe [2023-12-02 17:09:12,723 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_probe [2023-12-02 17:09:12,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:09:12,723 INFO L130 BoogieDeclarations]: Found specification of procedure pt_rewind [2023-12-02 17:09:12,723 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_rewind [2023-12-02 17:09:12,723 INFO L130 BoogieDeclarations]: Found specification of procedure device_create [2023-12-02 17:09:12,723 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create [2023-12-02 17:09:12,723 INFO L130 BoogieDeclarations]: Found specification of procedure xn [2023-12-02 17:09:12,723 INFO L138 BoogieDeclarations]: Found implementation of procedure xn [2023-12-02 17:09:12,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-12-02 17:09:12,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-12-02 17:09:12,724 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-12-02 17:09:12,724 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-12-02 17:09:12,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:09:12,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:09:12,724 INFO L130 BoogieDeclarations]: Found specification of procedure xs [2023-12-02 17:09:12,724 INFO L138 BoogieDeclarations]: Found implementation of procedure xs [2023-12-02 17:09:12,724 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-12-02 17:09:12,724 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-12-02 17:09:13,048 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:09:13,051 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:09:13,169 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 17:09:20,159 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:09:20,896 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:09:20,896 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-12-02 17:09:20,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:09:20 BoogieIcfgContainer [2023-12-02 17:09:20,898 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:09:20,901 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:09:20,901 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:09:20,904 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:09:20,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:09:11" (1/3) ... [2023-12-02 17:09:20,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51fbfe51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:09:20, skipping insertion in model container [2023-12-02 17:09:20,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:12" (2/3) ... [2023-12-02 17:09:20,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51fbfe51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:09:20, skipping insertion in model container [2023-12-02 17:09:20,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:09:20" (3/3) ... [2023-12-02 17:09:20,907 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--block--paride--pt.ko-entry_point.cil.out.i [2023-12-02 17:09:20,926 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:09:20,926 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:09:21,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:09:21,020 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1f3c63b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:09:21,020 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:09:21,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 640 states, 400 states have (on average 1.3475) internal successors, (539), 419 states have internal predecessors, (539), 196 states have call successors, (196), 47 states have call predecessors, (196), 46 states have return successors, (193), 193 states have call predecessors, (193), 193 states have call successors, (193) [2023-12-02 17:09:21,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-02 17:09:21,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:09:21,056 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:09:21,057 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:09:21,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:09:21,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1038545179, now seen corresponding path program 1 times [2023-12-02 17:09:21,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:09:21,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360470440] [2023-12-02 17:09:21,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:09:21,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:09:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:09:21,903 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 17:09:21,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:09:21,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360470440] [2023-12-02 17:09:21,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360470440] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:09:21,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:09:21,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:09:21,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110169979] [2023-12-02 17:09:21,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:09:21,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:09:21,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:09:21,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:09:21,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:09:21,944 INFO L87 Difference]: Start difference. First operand has 640 states, 400 states have (on average 1.3475) internal successors, (539), 419 states have internal predecessors, (539), 196 states have call successors, (196), 47 states have call predecessors, (196), 46 states have return successors, (193), 193 states have call predecessors, (193), 193 states have call successors, (193) Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-02 17:09:23,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:09:23,867 INFO L93 Difference]: Finished difference Result 1567 states and 2290 transitions. [2023-12-02 17:09:23,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:09:23,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 106 [2023-12-02 17:09:23,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:09:23,895 INFO L225 Difference]: With dead ends: 1567 [2023-12-02 17:09:23,895 INFO L226 Difference]: Without dead ends: 898 [2023-12-02 17:09:23,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:09:23,907 INFO L413 NwaCegarLoop]: 990 mSDtfsCounter, 444 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 17:09:23,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 1747 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 17:09:23,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2023-12-02 17:09:24,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 898. [2023-12-02 17:09:24,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 557 states have (on average 1.3231597845601437) internal successors, (737), 573 states have internal predecessors, (737), 268 states have call successors, (268), 73 states have call predecessors, (268), 72 states have return successors, (267), 267 states have call predecessors, (267), 267 states have call successors, (267) [2023-12-02 17:09:24,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1272 transitions. [2023-12-02 17:09:24,032 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1272 transitions. Word has length 106 [2023-12-02 17:09:24,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:09:24,033 INFO L495 AbstractCegarLoop]: Abstraction has 898 states and 1272 transitions. [2023-12-02 17:09:24,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-02 17:09:24,034 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1272 transitions. [2023-12-02 17:09:24,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-02 17:09:24,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:09:24,042 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:09:24,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:09:24,043 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:09:24,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:09:24,043 INFO L85 PathProgramCache]: Analyzing trace with hash 2014145286, now seen corresponding path program 1 times [2023-12-02 17:09:24,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:09:24,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546820406] [2023-12-02 17:09:24,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:09:24,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:09:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:09:24,600 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-02 17:09:24,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:09:24,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546820406] [2023-12-02 17:09:24,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546820406] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:09:24,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:09:24,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:09:24,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545234605] [2023-12-02 17:09:24,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:09:24,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:09:24,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:09:24,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:09:24,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:09:24,604 INFO L87 Difference]: Start difference. First operand 898 states and 1272 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-02 17:09:26,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:09:26,067 INFO L93 Difference]: Finished difference Result 1795 states and 2554 transitions. [2023-12-02 17:09:26,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:09:26,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 143 [2023-12-02 17:09:26,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:09:26,078 INFO L225 Difference]: With dead ends: 1795 [2023-12-02 17:09:26,078 INFO L226 Difference]: Without dead ends: 922 [2023-12-02 17:09:26,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:09:26,085 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 12 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 17:09:26,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1528 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 17:09:26,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2023-12-02 17:09:26,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 900. [2023-12-02 17:09:26,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 559 states have (on average 1.3220035778175314) internal successors, (739), 575 states have internal predecessors, (739), 268 states have call successors, (268), 73 states have call predecessors, (268), 72 states have return successors, (267), 267 states have call predecessors, (267), 267 states have call successors, (267) [2023-12-02 17:09:26,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1274 transitions. [2023-12-02 17:09:26,147 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1274 transitions. Word has length 143 [2023-12-02 17:09:26,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:09:26,148 INFO L495 AbstractCegarLoop]: Abstraction has 900 states and 1274 transitions. [2023-12-02 17:09:26,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-02 17:09:26,148 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1274 transitions. [2023-12-02 17:09:26,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-02 17:09:26,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:09:26,154 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:09:26,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 17:09:26,155 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:09:26,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:09:26,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1682696998, now seen corresponding path program 1 times [2023-12-02 17:09:26,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:09:26,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609266953] [2023-12-02 17:09:26,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:09:26,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:09:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:09:26,663 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-02 17:09:26,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:09:26,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609266953] [2023-12-02 17:09:26,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609266953] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:09:26,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:09:26,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:09:26,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348978186] [2023-12-02 17:09:26,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:09:26,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:09:26,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:09:26,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:09:26,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:09:26,666 INFO L87 Difference]: Start difference. First operand 900 states and 1274 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-02 17:09:28,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:09:28,280 INFO L93 Difference]: Finished difference Result 1793 states and 2548 transitions. [2023-12-02 17:09:28,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:09:28,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 147 [2023-12-02 17:09:28,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:09:28,289 INFO L225 Difference]: With dead ends: 1793 [2023-12-02 17:09:28,289 INFO L226 Difference]: Without dead ends: 918 [2023-12-02 17:09:28,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:09:28,295 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 12 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:09:28,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1526 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 17:09:28,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2023-12-02 17:09:28,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 910. [2023-12-02 17:09:28,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 569 states have (on average 1.32688927943761) internal successors, (755), 585 states have internal predecessors, (755), 268 states have call successors, (268), 73 states have call predecessors, (268), 72 states have return successors, (267), 267 states have call predecessors, (267), 267 states have call successors, (267) [2023-12-02 17:09:28,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1290 transitions. [2023-12-02 17:09:28,349 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1290 transitions. Word has length 147 [2023-12-02 17:09:28,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:09:28,350 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1290 transitions. [2023-12-02 17:09:28,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-02 17:09:28,350 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1290 transitions. [2023-12-02 17:09:28,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-02 17:09:28,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:09:28,356 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:09:28,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 17:09:28,356 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:09:28,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:09:28,357 INFO L85 PathProgramCache]: Analyzing trace with hash -344458832, now seen corresponding path program 1 times [2023-12-02 17:09:28,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:09:28,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282356459] [2023-12-02 17:09:28,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:09:28,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:09:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:09:29,021 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-02 17:09:29,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:09:29,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282356459] [2023-12-02 17:09:29,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282356459] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:09:29,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091810809] [2023-12-02 17:09:29,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:09:29,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:09:29,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:09:29,028 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:09:29,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 17:09:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:09:30,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 2160 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 17:09:30,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:09:30,091 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-02 17:09:30,092 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:09:30,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091810809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:09:30,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:09:30,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-12-02 17:09:30,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891151295] [2023-12-02 17:09:30,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:09:30,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:09:30,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:09:30,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:09:30,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:09:30,095 INFO L87 Difference]: Start difference. First operand 910 states and 1290 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-02 17:09:31,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:09:31,940 INFO L93 Difference]: Finished difference Result 1807 states and 2569 transitions. [2023-12-02 17:09:31,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:09:31,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 152 [2023-12-02 17:09:31,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:09:31,950 INFO L225 Difference]: With dead ends: 1807 [2023-12-02 17:09:31,950 INFO L226 Difference]: Without dead ends: 922 [2023-12-02 17:09:31,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:09:31,957 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 9 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 17:09:31,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1527 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 17:09:31,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2023-12-02 17:09:32,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 912. [2023-12-02 17:09:32,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 571 states have (on average 1.3257443082311733) internal successors, (757), 587 states have internal predecessors, (757), 268 states have call successors, (268), 73 states have call predecessors, (268), 72 states have return successors, (267), 267 states have call predecessors, (267), 267 states have call successors, (267) [2023-12-02 17:09:32,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1292 transitions. [2023-12-02 17:09:32,021 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1292 transitions. Word has length 152 [2023-12-02 17:09:32,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:09:32,022 INFO L495 AbstractCegarLoop]: Abstraction has 912 states and 1292 transitions. [2023-12-02 17:09:32,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-02 17:09:32,022 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1292 transitions. [2023-12-02 17:09:32,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-02 17:09:32,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:09:32,031 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:09:32,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 17:09:32,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:09:32,232 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:09:32,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:09:32,232 INFO L85 PathProgramCache]: Analyzing trace with hash -138281970, now seen corresponding path program 1 times [2023-12-02 17:09:32,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:09:32,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243610427] [2023-12-02 17:09:32,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:09:32,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:09:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:09:32,878 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-02 17:09:32,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:09:32,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243610427] [2023-12-02 17:09:32,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243610427] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:09:32,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602313248] [2023-12-02 17:09:32,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:09:32,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:09:32,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:09:32,880 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:09:32,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 17:09:33,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:09:33,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 2167 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:09:33,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:09:33,959 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-02 17:09:33,959 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:09:33,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602313248] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:09:33,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:09:33,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-12-02 17:09:33,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302814039] [2023-12-02 17:09:33,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:09:33,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:09:33,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:09:33,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:09:33,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:09:33,962 INFO L87 Difference]: Start difference. First operand 912 states and 1292 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-12-02 17:09:35,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:09:35,789 INFO L93 Difference]: Finished difference Result 1845 states and 2630 transitions. [2023-12-02 17:09:35,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:09:35,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 155 [2023-12-02 17:09:35,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:09:35,797 INFO L225 Difference]: With dead ends: 1845 [2023-12-02 17:09:35,797 INFO L226 Difference]: Without dead ends: 958 [2023-12-02 17:09:35,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:09:35,803 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 15 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1532 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 17:09:35,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1532 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 17:09:35,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2023-12-02 17:09:35,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 956. [2023-12-02 17:09:35,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 603 states have (on average 1.3349917081260365) internal successors, (805), 619 states have internal predecessors, (805), 280 states have call successors, (280), 73 states have call predecessors, (280), 72 states have return successors, (279), 279 states have call predecessors, (279), 279 states have call successors, (279) [2023-12-02 17:09:35,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1364 transitions. [2023-12-02 17:09:35,859 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1364 transitions. Word has length 155 [2023-12-02 17:09:35,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:09:35,859 INFO L495 AbstractCegarLoop]: Abstraction has 956 states and 1364 transitions. [2023-12-02 17:09:35,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-12-02 17:09:35,860 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1364 transitions. [2023-12-02 17:09:35,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-02 17:09:35,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:09:35,866 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:09:35,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 17:09:36,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:09:36,067 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:09:36,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:09:36,068 INFO L85 PathProgramCache]: Analyzing trace with hash 457592189, now seen corresponding path program 1 times [2023-12-02 17:09:36,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:09:36,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334709481] [2023-12-02 17:09:36,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:09:36,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:09:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:09:36,586 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-02 17:09:36,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:09:36,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334709481] [2023-12-02 17:09:36,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334709481] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:09:36,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98886853] [2023-12-02 17:09:36,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:09:36,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:09:36,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:09:36,588 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:09:36,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 17:09:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:09:37,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 2188 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:09:37,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:09:37,599 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-02 17:09:37,599 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:09:37,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98886853] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:09:37,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:09:37,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-12-02 17:09:37,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55664561] [2023-12-02 17:09:37,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:09:37,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:09:37,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:09:37,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:09:37,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:09:37,602 INFO L87 Difference]: Start difference. First operand 956 states and 1364 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-02 17:09:39,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:09:39,230 INFO L93 Difference]: Finished difference Result 1893 states and 2739 transitions. [2023-12-02 17:09:39,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:09:39,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 159 [2023-12-02 17:09:39,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:09:39,242 INFO L225 Difference]: With dead ends: 1893 [2023-12-02 17:09:39,242 INFO L226 Difference]: Without dead ends: 962 [2023-12-02 17:09:39,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:09:39,249 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 2 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:09:39,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1529 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 17:09:39,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2023-12-02 17:09:39,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 958. [2023-12-02 17:09:39,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 605 states have (on average 1.333884297520661) internal successors, (807), 621 states have internal predecessors, (807), 280 states have call successors, (280), 73 states have call predecessors, (280), 72 states have return successors, (279), 279 states have call predecessors, (279), 279 states have call successors, (279) [2023-12-02 17:09:39,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1366 transitions. [2023-12-02 17:09:39,315 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1366 transitions. Word has length 159 [2023-12-02 17:09:39,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:09:39,316 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 1366 transitions. [2023-12-02 17:09:39,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-02 17:09:39,317 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1366 transitions. [2023-12-02 17:09:39,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-12-02 17:09:39,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:09:39,324 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:09:39,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 17:09:39,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:09:39,525 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:09:39,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:09:39,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1417013952, now seen corresponding path program 1 times [2023-12-02 17:09:39,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:09:39,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181885229] [2023-12-02 17:09:39,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:09:39,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:09:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:09:40,173 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-02 17:09:40,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:09:40,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181885229] [2023-12-02 17:09:40,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181885229] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:09:40,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500977998] [2023-12-02 17:09:40,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:09:40,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:09:40,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:09:40,174 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:09:40,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 17:09:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:09:41,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:09:41,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:09:41,213 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-02 17:09:41,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:09:41,433 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-02 17:09:41,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500977998] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:09:41,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1886167866] [2023-12-02 17:09:41,459 INFO L159 IcfgInterpreter]: Started Sifa with 140 locations of interest [2023-12-02 17:09:41,459 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:09:41,462 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:09:41,466 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:09:41,466 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:10:28,927 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_zalloc with input of size 932 for LOIs [2023-12-02 17:10:35,706 INFO L197 IcfgInterpreter]: Interpreting procedure printk with input of size 113 for LOIs [2023-12-02 17:10:35,770 INFO L197 IcfgInterpreter]: Interpreting procedure pi_init with input of size 54 for LOIs [2023-12-02 17:10:35,784 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:10:43,340 WARN L293 SmtUtils]: Spent 7.48s on a formula simplification that was a NOOP. DAG size: 917 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:10:48,563 WARN L293 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 932 DAG size of output: 87 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:11:08,472 WARN L293 SmtUtils]: Spent 9.41s on a formula simplification that was a NOOP. DAG size: 1198 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:11:18,852 WARN L293 SmtUtils]: Spent 9.85s on a formula simplification that was a NOOP. DAG size: 1219 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:11:39,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1886167866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:11:39,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:11:39,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [4, 4, 4] total 43 [2023-12-02 17:11:39,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724781705] [2023-12-02 17:11:39,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:11:39,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-02 17:11:39,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:11:39,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-02 17:11:39,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1655, Unknown=0, NotChecked=0, Total=1806 [2023-12-02 17:11:39,741 INFO L87 Difference]: Start difference. First operand 958 states and 1366 transitions. Second operand has 39 states, 30 states have (on average 3.2333333333333334) internal successors, (97), 29 states have internal predecessors, (97), 8 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2023-12-02 17:11:48,246 WARN L293 SmtUtils]: Spent 7.85s on a formula simplification that was a NOOP. DAG size: 920 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:11:56,367 WARN L293 SmtUtils]: Spent 7.65s on a formula simplification that was a NOOP. DAG size: 928 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:12:04,921 WARN L293 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 934 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:12:28,590 WARN L293 SmtUtils]: Spent 22.18s on a formula simplification. DAG size of input: 1456 DAG size of output: 1456 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:12:52,137 WARN L293 SmtUtils]: Spent 22.54s on a formula simplification. DAG size of input: 1477 DAG size of output: 1477 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:13:18,291 WARN L293 SmtUtils]: Spent 22.72s on a formula simplification. DAG size of input: 1487 DAG size of output: 1481 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:13:41,893 WARN L293 SmtUtils]: Spent 22.53s on a formula simplification. DAG size of input: 1500 DAG size of output: 1494 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:14:07,549 WARN L293 SmtUtils]: Spent 24.00s on a formula simplification. DAG size of input: 1523 DAG size of output: 1517 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:14:32,644 WARN L293 SmtUtils]: Spent 23.88s on a formula simplification. DAG size of input: 1527 DAG size of output: 1521 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:14:58,748 WARN L293 SmtUtils]: Spent 24.01s on a formula simplification. DAG size of input: 1534 DAG size of output: 1525 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:15:20,383 WARN L293 SmtUtils]: Spent 15.86s on a formula simplification. DAG size of input: 313 DAG size of output: 312 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:15:50,706 WARN L293 SmtUtils]: Spent 15.63s on a formula simplification. DAG size of input: 294 DAG size of output: 293 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:16:00,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:16:02,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:16:04,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:16:06,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:16:08,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:16:10,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:16:12,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:16:14,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:16:16,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:16:18,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:16:20,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:16:22,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:16:24,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:16:26,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:16:28,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:16:30,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:16:33,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:16:35,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:16:37,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:16:39,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:16:41,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:16:43,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:16:45,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:16:47,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:16:49,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:16:51,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:16:53,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:16:55,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:17:33,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:17:36,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:17:37,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:17:38,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:17:40,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:17:44,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:17:45,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:17:48,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:17:48,709 INFO L93 Difference]: Finished difference Result 2065 states and 2968 transitions. [2023-12-02 17:17:48,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-02 17:17:48,710 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 30 states have (on average 3.2333333333333334) internal successors, (97), 29 states have internal predecessors, (97), 8 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) Word has length 206 [2023-12-02 17:17:48,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:17:48,716 INFO L225 Difference]: With dead ends: 2065 [2023-12-02 17:17:48,716 INFO L226 Difference]: Without dead ends: 1132 [2023-12-02 17:17:48,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 581 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1567 ImplicationChecksByTransitivity, 304.0s TimeCoverageRelationStatistics Valid=498, Invalid=5052, Unknown=0, NotChecked=0, Total=5550 [2023-12-02 17:17:48,721 INFO L413 NwaCegarLoop]: 734 mSDtfsCounter, 315 mSDsluCounter, 12202 mSDsCounter, 0 mSdLazyCounter, 4035 mSolverCounterSat, 104 mSolverCounterUnsat, 29 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 126.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 12936 SdHoareTripleChecker+Invalid, 4168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 4035 IncrementalHoareTripleChecker+Invalid, 29 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 128.4s IncrementalHoareTripleChecker+Time [2023-12-02 17:17:48,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 12936 Invalid, 4168 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 4035 Invalid, 29 Unknown, 0 Unchecked, 128.4s Time] [2023-12-02 17:17:48,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2023-12-02 17:17:48,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1002. [2023-12-02 17:17:48,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 638 states have (on average 1.3260188087774294) internal successors, (846), 655 states have internal predecessors, (846), 286 states have call successors, (286), 77 states have call predecessors, (286), 77 states have return successors, (292), 285 states have call predecessors, (292), 285 states have call successors, (292) [2023-12-02 17:17:48,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1424 transitions. [2023-12-02 17:17:48,874 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1424 transitions. Word has length 206 [2023-12-02 17:17:48,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:17:48,875 INFO L495 AbstractCegarLoop]: Abstraction has 1002 states and 1424 transitions. [2023-12-02 17:17:48,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 30 states have (on average 3.2333333333333334) internal successors, (97), 29 states have internal predecessors, (97), 8 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2023-12-02 17:17:48,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1424 transitions. [2023-12-02 17:17:48,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-12-02 17:17:48,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:17:48,883 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:17:48,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 17:17:49,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:17:49,084 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:17:49,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:17:49,085 INFO L85 PathProgramCache]: Analyzing trace with hash -484300626, now seen corresponding path program 1 times [2023-12-02 17:17:49,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:17:49,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646019465] [2023-12-02 17:17:49,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:17:49,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:17:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:17:49,636 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-02 17:17:49,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:17:49,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646019465] [2023-12-02 17:17:49,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646019465] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:17:49,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453085959] [2023-12-02 17:17:49,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:17:49,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:17:49,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:17:49,638 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:17:49,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8520ae5-b09f-48ea-a411-6177ccf8b18f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 17:17:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:17:50,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 2596 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:17:50,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:17:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-02 17:17:50,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:17:50,744 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-02 17:17:50,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453085959] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:17:50,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1700439074] [2023-12-02 17:17:50,750 INFO L159 IcfgInterpreter]: Started Sifa with 140 locations of interest [2023-12-02 17:17:50,750 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:17:50,751 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:17:50,751 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:17:50,751 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:18:53,861 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_zalloc with input of size 932 for LOIs [2023-12-02 17:19:00,667 INFO L197 IcfgInterpreter]: Interpreting procedure printk with input of size 113 for LOIs [2023-12-02 17:19:00,732 INFO L197 IcfgInterpreter]: Interpreting procedure pi_init with input of size 375 for LOIs [2023-12-02 17:19:01,067 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:19:08,645 WARN L293 SmtUtils]: Spent 7.50s on a formula simplification that was a NOOP. DAG size: 917 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:19:33,479 WARN L293 SmtUtils]: Spent 9.67s on a formula simplification that was a NOOP. DAG size: 1198 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:19:44,532 WARN L293 SmtUtils]: Spent 10.54s on a formula simplification that was a NOOP. DAG size: 1219 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:20:06,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1700439074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:20:06,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:20:06,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [4, 4, 4] total 43 [2023-12-02 17:20:06,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804890130] [2023-12-02 17:20:06,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:20:06,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-02 17:20:06,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:20:06,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-02 17:20:06,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1659, Unknown=0, NotChecked=0, Total=1806 [2023-12-02 17:20:06,803 INFO L87 Difference]: Start difference. First operand 1002 states and 1424 transitions. Second operand has 39 states, 30 states have (on average 3.2333333333333334) internal successors, (97), 29 states have internal predecessors, (97), 8 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2023-12-02 17:20:15,333 WARN L293 SmtUtils]: Spent 7.75s on a formula simplification that was a NOOP. DAG size: 920 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:20:23,541 WARN L293 SmtUtils]: Spent 7.68s on a formula simplification that was a NOOP. DAG size: 928 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:20:31,857 WARN L293 SmtUtils]: Spent 7.77s on a formula simplification that was a NOOP. DAG size: 934 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:20:56,657 WARN L293 SmtUtils]: Spent 23.14s on a formula simplification. DAG size of input: 1456 DAG size of output: 1456 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:21:22,557 WARN L293 SmtUtils]: Spent 24.53s on a formula simplification. DAG size of input: 1477 DAG size of output: 1477 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:21:52,796 WARN L293 SmtUtils]: Spent 25.09s on a formula simplification. DAG size of input: 1487 DAG size of output: 1481 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:22:19,830 WARN L293 SmtUtils]: Spent 25.59s on a formula simplification. DAG size of input: 1500 DAG size of output: 1494 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:22:47,406 WARN L293 SmtUtils]: Spent 25.22s on a formula simplification. DAG size of input: 1523 DAG size of output: 1517 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:23:14,969 WARN L293 SmtUtils]: Spent 26.00s on a formula simplification. DAG size of input: 1527 DAG size of output: 1521 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)