./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e19c4c-1ff0-4cba-afdc-bac766bf9aa3/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e19c4c-1ff0-4cba-afdc-bac766bf9aa3/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e19c4c-1ff0-4cba-afdc-bac766bf9aa3/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e19c4c-1ff0-4cba-afdc-bac766bf9aa3/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e19c4c-1ff0-4cba-afdc-bac766bf9aa3/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e19c4c-1ff0-4cba-afdc-bac766bf9aa3/bin/utaipan-verify-t7M7D8N6sZ --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 e4e522f7269f01a0f0108ec2341cf17a6d715eaf63b892b25236d9e51e23a874 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:46:08,238 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:46:08,318 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e19c4c-1ff0-4cba-afdc-bac766bf9aa3/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 04:46:08,324 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:46:08,325 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:46:08,354 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:46:08,355 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:46:08,356 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:46:08,357 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:46:08,357 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:46:08,358 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:46:08,359 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:46:08,359 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:46:08,360 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:46:08,360 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:46:08,361 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:46:08,362 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:46:08,362 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:46:08,363 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:46:08,364 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:46:08,364 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:46:08,365 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:46:08,366 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:46:08,367 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:46:08,367 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:46:08,368 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:46:08,369 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:46:08,369 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:46:08,370 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:46:08,370 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:46:08,371 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:46:08,371 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:46:08,372 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:46:08,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:46:08,373 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:46:08,373 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:46:08,373 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:46:08,374 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:46:08,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:46:08,374 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:46:08,375 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:46:08,375 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:46:08,376 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_10e19c4c-1ff0-4cba-afdc-bac766bf9aa3/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e19c4c-1ff0-4cba-afdc-bac766bf9aa3/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4e522f7269f01a0f0108ec2341cf17a6d715eaf63b892b25236d9e51e23a874 [2023-11-19 04:46:08,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:46:08,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:46:08,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:46:08,695 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:46:08,696 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:46:08,697 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e19c4c-1ff0-4cba-afdc-bac766bf9aa3/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.i [2023-11-19 04:46:11,858 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:46:12,361 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:46:12,364 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e19c4c-1ff0-4cba-afdc-bac766bf9aa3/sv-benchmarks/c/ldv-commit-tester/m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.i [2023-11-19 04:46:12,396 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e19c4c-1ff0-4cba-afdc-bac766bf9aa3/bin/utaipan-verify-t7M7D8N6sZ/data/0b4edc872/b5c71562f5564d28a2aebbd257f8b2e4/FLAGcb4a0331d [2023-11-19 04:46:12,416 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e19c4c-1ff0-4cba-afdc-bac766bf9aa3/bin/utaipan-verify-t7M7D8N6sZ/data/0b4edc872/b5c71562f5564d28a2aebbd257f8b2e4 [2023-11-19 04:46:12,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:46:12,427 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:46:12,429 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:46:12,429 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:46:12,441 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:46:12,444 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:46:12" (1/1) ... [2023-11-19 04:46:12,445 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10e6ac0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:12, skipping insertion in model container [2023-11-19 04:46:12,446 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:46:12" (1/1) ... [2023-11-19 04:46:12,617 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:46:13,450 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_10e19c4c-1ff0-4cba-afdc-bac766bf9aa3/sv-benchmarks/c/ldv-commit-tester/m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.i[71148,71161] [2023-11-19 04:46:13,488 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:46:13,518 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:46:13,717 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_10e19c4c-1ff0-4cba-afdc-bac766bf9aa3/sv-benchmarks/c/ldv-commit-tester/m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.i[71148,71161] [2023-11-19 04:46:13,734 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:46:13,775 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:13,776 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:13,785 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:46:13,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13 WrapperNode [2023-11-19 04:46:13,787 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:46:13,788 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:46:13,788 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:46:13,789 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:46:13,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13" (1/1) ... [2023-11-19 04:46:13,849 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13" (1/1) ... [2023-11-19 04:46:13,989 INFO L138 Inliner]: procedures = 102, calls = 434, calls flagged for inlining = 49, calls inlined = 44, statements flattened = 1146 [2023-11-19 04:46:13,991 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:46:13,992 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:46:13,992 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:46:13,992 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:46:14,020 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13" (1/1) ... [2023-11-19 04:46:14,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13" (1/1) ... [2023-11-19 04:46:14,050 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13" (1/1) ... [2023-11-19 04:46:14,051 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13" (1/1) ... [2023-11-19 04:46:14,141 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13" (1/1) ... [2023-11-19 04:46:14,156 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13" (1/1) ... [2023-11-19 04:46:14,166 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13" (1/1) ... [2023-11-19 04:46:14,174 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13" (1/1) ... [2023-11-19 04:46:14,192 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:46:14,193 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:46:14,193 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:46:14,193 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:46:14,194 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13" (1/1) ... [2023-11-19 04:46:14,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:46:14,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e19c4c-1ff0-4cba-afdc-bac766bf9aa3/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:46:14,237 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e19c4c-1ff0-4cba-afdc-bac766bf9aa3/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:46:14,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e19c4c-1ff0-4cba-afdc-bac766bf9aa3/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:46:14,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 04:46:14,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 04:46:14,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 04:46:14,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:46:14,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 04:46:14,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 04:46:14,293 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 04:46:14,294 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 04:46:14,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:46:14,295 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 04:46:14,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 04:46:14,296 INFO L130 BoogieDeclarations]: Found specification of procedure extract_value [2023-11-19 04:46:14,296 INFO L138 BoogieDeclarations]: Found implementation of procedure extract_value [2023-11-19 04:46:14,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:46:14,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:46:14,296 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_destroy_user [2023-11-19 04:46:14,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_destroy_user [2023-11-19 04:46:14,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:46:14,298 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2023-11-19 04:46:14,298 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2023-11-19 04:46:14,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:46:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-19 04:46:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-19 04:46:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure ibmpex_bmc_delete [2023-11-19 04:46:14,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ibmpex_bmc_delete [2023-11-19 04:46:14,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:46:14,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-19 04:46:14,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-19 04:46:14,301 INFO L130 BoogieDeclarations]: Found specification of procedure ibmpex_send_message [2023-11-19 04:46:14,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ibmpex_send_message [2023-11-19 04:46:14,302 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-11-19 04:46:14,302 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-11-19 04:46:14,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:46:14,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 04:46:14,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_device_create_file_dev_attr_of_sensor_device_attribute [2023-11-19 04:46:14,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_device_create_file_dev_attr_of_sensor_device_attribute [2023-11-19 04:46:14,303 INFO L130 BoogieDeclarations]: Found specification of procedure hwmon_device_unregister [2023-11-19 04:46:14,303 INFO L138 BoogieDeclarations]: Found implementation of procedure hwmon_device_unregister [2023-11-19 04:46:14,303 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-19 04:46:14,303 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-19 04:46:14,303 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-19 04:46:14,304 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-19 04:46:14,304 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-19 04:46:14,304 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-19 04:46:14,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:46:14,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2023-11-19 04:46:14,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2023-11-19 04:46:14,305 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_recv_msg [2023-11-19 04:46:14,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_recv_msg [2023-11-19 04:46:14,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 04:46:14,305 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2023-11-19 04:46:14,305 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2023-11-19 04:46:14,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:46:14,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:46:14,656 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:46:14,660 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:46:16,103 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:46:16,489 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:46:16,489 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:46:16,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:46:16 BoogieIcfgContainer [2023-11-19 04:46:16,496 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:46:16,499 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:46:16,499 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:46:16,503 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:46:16,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:46:12" (1/3) ... [2023-11-19 04:46:16,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@262bfd25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:46:16, skipping insertion in model container [2023-11-19 04:46:16,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13" (2/3) ... [2023-11-19 04:46:16,505 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@262bfd25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:46:16, skipping insertion in model container [2023-11-19 04:46:16,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:46:16" (3/3) ... [2023-11-19 04:46:16,508 INFO L112 eAbstractionObserver]: Analyzing ICFG m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.i [2023-11-19 04:46:16,530 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:46:16,530 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:46:16,604 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:46:16,612 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;@38a817ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:46:16,612 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:46:16,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 213 states, 139 states have (on average 1.3453237410071943) internal successors, (187), 144 states have internal predecessors, (187), 54 states have call successors, (54), 18 states have call predecessors, (54), 18 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-19 04:46:16,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-19 04:46:16,643 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:16,644 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-11-19 04:46:16,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:46:16,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:16,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1177816745, now seen corresponding path program 1 times [2023-11-19 04:46:16,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:16,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637655387] [2023-11-19 04:46:16,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:16,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:17,579 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-19 04:46:17,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:17,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637655387] [2023-11-19 04:46:17,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637655387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:46:17,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:46:17,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:46:17,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857051216] [2023-11-19 04:46:17,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:46:17,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:46:17,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:17,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:46:17,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:46:17,647 INFO L87 Difference]: Start difference. First operand has 213 states, 139 states have (on average 1.3453237410071943) internal successors, (187), 144 states have internal predecessors, (187), 54 states have call successors, (54), 18 states have call predecessors, (54), 18 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 04:46:18,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:18,837 INFO L93 Difference]: Finished difference Result 474 states and 668 transitions. [2023-11-19 04:46:18,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:46:18,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 93 [2023-11-19 04:46:18,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:18,853 INFO L225 Difference]: With dead ends: 474 [2023-11-19 04:46:18,853 INFO L226 Difference]: Without dead ends: 251 [2023-11-19 04:46:18,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:46:18,862 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 54 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:18,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 825 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 04:46:18,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-11-19 04:46:18,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 207. [2023-11-19 04:46:18,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 137 states have (on average 1.3211678832116789) internal successors, (181), 140 states have internal predecessors, (181), 52 states have call successors, (52), 18 states have call predecessors, (52), 17 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-11-19 04:46:18,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 283 transitions. [2023-11-19 04:46:18,991 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 283 transitions. Word has length 93 [2023-11-19 04:46:18,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:18,993 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 283 transitions. [2023-11-19 04:46:18,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 04:46:18,994 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 283 transitions. [2023-11-19 04:46:19,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-19 04:46:19,005 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:19,005 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-11-19 04:46:19,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:46:19,006 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:46:19,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:19,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1802211756, now seen corresponding path program 1 times [2023-11-19 04:46:19,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:19,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042254058] [2023-11-19 04:46:19,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:19,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:19,820 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-19 04:46:19,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:19,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042254058] [2023-11-19 04:46:19,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042254058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:46:19,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:46:19,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:46:19,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378178416] [2023-11-19 04:46:19,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:46:19,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:46:19,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:19,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:46:19,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:46:19,826 INFO L87 Difference]: Start difference. First operand 207 states and 283 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-19 04:46:21,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:21,284 INFO L93 Difference]: Finished difference Result 595 states and 817 transitions. [2023-11-19 04:46:21,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:46:21,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 97 [2023-11-19 04:46:21,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:21,296 INFO L225 Difference]: With dead ends: 595 [2023-11-19 04:46:21,296 INFO L226 Difference]: Without dead ends: 592 [2023-11-19 04:46:21,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:46:21,299 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 606 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:21,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 592 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-19 04:46:21,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2023-11-19 04:46:21,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2023-11-19 04:46:21,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 392 states have (on average 1.316326530612245) internal successors, (516), 399 states have internal predecessors, (516), 148 states have call successors, (148), 52 states have call predecessors, (148), 51 states have return successors, (150), 146 states have call predecessors, (150), 146 states have call successors, (150) [2023-11-19 04:46:21,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 814 transitions. [2023-11-19 04:46:21,419 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 814 transitions. Word has length 97 [2023-11-19 04:46:21,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:21,420 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 814 transitions. [2023-11-19 04:46:21,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-19 04:46:21,421 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 814 transitions. [2023-11-19 04:46:21,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-19 04:46:21,423 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:21,424 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-11-19 04:46:21,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:46:21,424 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:46:21,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:21,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1252922710, now seen corresponding path program 1 times [2023-11-19 04:46:21,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:21,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603207122] [2023-11-19 04:46:21,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:21,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:21,841 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-19 04:46:21,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:21,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603207122] [2023-11-19 04:46:21,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603207122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:46:21,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:46:21,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:46:21,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622577313] [2023-11-19 04:46:21,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:46:21,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:46:21,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:21,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:46:21,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:46:21,852 INFO L87 Difference]: Start difference. First operand 592 states and 814 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 04:46:23,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:23,082 INFO L93 Difference]: Finished difference Result 996 states and 1371 transitions. [2023-11-19 04:46:23,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:46:23,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 105 [2023-11-19 04:46:23,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:23,092 INFO L225 Difference]: With dead ends: 996 [2023-11-19 04:46:23,092 INFO L226 Difference]: Without dead ends: 793 [2023-11-19 04:46:23,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:46:23,097 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 269 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:23,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 655 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 04:46:23,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2023-11-19 04:46:23,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 790. [2023-11-19 04:46:23,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 524 states have (on average 1.3148854961832062) internal successors, (689), 533 states have internal predecessors, (689), 197 states have call successors, (197), 69 states have call predecessors, (197), 68 states have return successors, (199), 195 states have call predecessors, (199), 195 states have call successors, (199) [2023-11-19 04:46:23,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 1085 transitions. [2023-11-19 04:46:23,179 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 1085 transitions. Word has length 105 [2023-11-19 04:46:23,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:23,181 INFO L495 AbstractCegarLoop]: Abstraction has 790 states and 1085 transitions. [2023-11-19 04:46:23,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 04:46:23,182 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 1085 transitions. [2023-11-19 04:46:23,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-19 04:46:23,191 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:23,192 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-19 04:46:23,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:46:23,192 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:46:23,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:23,194 INFO L85 PathProgramCache]: Analyzing trace with hash 25012808, now seen corresponding path program 1 times [2023-11-19 04:46:23,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:23,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143908441] [2023-11-19 04:46:23,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:23,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:23,843 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-19 04:46:23,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:23,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143908441] [2023-11-19 04:46:23,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143908441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:46:23,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:46:23,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:46:23,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986542094] [2023-11-19 04:46:23,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:46:23,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:46:23,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:23,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:46:23,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:46:23,848 INFO L87 Difference]: Start difference. First operand 790 states and 1085 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-19 04:46:26,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:26,070 INFO L93 Difference]: Finished difference Result 1387 states and 1908 transitions. [2023-11-19 04:46:26,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:46:26,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 122 [2023-11-19 04:46:26,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:26,086 INFO L225 Difference]: With dead ends: 1387 [2023-11-19 04:46:26,086 INFO L226 Difference]: Without dead ends: 1383 [2023-11-19 04:46:26,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:46:26,099 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 951 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:26,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 993 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-19 04:46:26,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2023-11-19 04:46:26,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1186. [2023-11-19 04:46:26,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 788 states have (on average 1.3147208121827412) internal successors, (1036), 801 states have internal predecessors, (1036), 295 states have call successors, (295), 103 states have call predecessors, (295), 102 states have return successors, (299), 293 states have call predecessors, (299), 293 states have call successors, (299) [2023-11-19 04:46:26,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1630 transitions. [2023-11-19 04:46:26,215 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1630 transitions. Word has length 122 [2023-11-19 04:46:26,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:26,216 INFO L495 AbstractCegarLoop]: Abstraction has 1186 states and 1630 transitions. [2023-11-19 04:46:26,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-19 04:46:26,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1630 transitions. [2023-11-19 04:46:26,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-19 04:46:26,219 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:26,220 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-19 04:46:26,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:46:26,223 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:46:26,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:26,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1877734896, now seen corresponding path program 1 times [2023-11-19 04:46:26,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:26,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535209600] [2023-11-19 04:46:26,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:26,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:26,704 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-19 04:46:26,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:26,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535209600] [2023-11-19 04:46:26,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535209600] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:46:26,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627299000] [2023-11-19 04:46:26,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:26,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:46:26,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e19c4c-1ff0-4cba-afdc-bac766bf9aa3/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:46:26,711 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e19c4c-1ff0-4cba-afdc-bac766bf9aa3/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:46:26,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e19c4c-1ff0-4cba-afdc-bac766bf9aa3/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:46:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:27,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 1574 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:46:27,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:46:27,531 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-19 04:46:27,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:46:27,667 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-19 04:46:27,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627299000] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:46:27,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2001933950] [2023-11-19 04:46:27,694 INFO L159 IcfgInterpreter]: Started Sifa with 92 locations of interest [2023-11-19 04:46:27,694 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:46:27,699 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:46:27,704 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:46:27,705 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:46:45,700 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_handler_precall with input of size 552 for LOIs [2023-11-19 04:46:47,287 INFO L197 IcfgInterpreter]: Interpreting procedure kzalloc with input of size 547 for LOIs [2023-11-19 04:46:52,419 INFO L197 IcfgInterpreter]: Interpreting procedure kmalloc with input of size 551 for LOIs [2023-11-19 04:46:57,476 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 553 for LOIs [2023-11-19 04:46:58,868 INFO L180 IcfgInterpreter]: Interpretation finished