./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 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_506b4ca7-b3b4-4e31-b8ec-743a711b31d5/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506b4ca7-b3b4-4e31-b8ec-743a711b31d5/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_506b4ca7-b3b4-4e31-b8ec-743a711b31d5/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506b4ca7-b3b4-4e31-b8ec-743a711b31d5/bin/utaipan-verify-nQ1chXbOIh/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_506b4ca7-b3b4-4e31-b8ec-743a711b31d5/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_506b4ca7-b3b4-4e31-b8ec-743a711b31d5/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 e4e522f7269f01a0f0108ec2341cf17a6d715eaf63b892b25236d9e51e23a874 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:28:37,415 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:28:37,484 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506b4ca7-b3b4-4e31-b8ec-743a711b31d5/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 15:28:37,488 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:28:37,489 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:28:37,513 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:28:37,514 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:28:37,515 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:28:37,515 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:28:37,516 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:28:37,517 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:28:37,517 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:28:37,518 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:28:37,518 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:28:37,519 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:28:37,519 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:28:37,519 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:28:37,520 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:28:37,520 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:28:37,521 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:28:37,521 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:28:37,522 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:28:37,523 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:28:37,523 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:28:37,524 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:28:37,524 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:28:37,524 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:28:37,525 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:28:37,525 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:28:37,526 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:28:37,526 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:28:37,527 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:28:37,527 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:28:37,528 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:28:37,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:28:37,528 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:28:37,529 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:28:37,529 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:28:37,530 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:28:37,530 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:28:37,530 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:28:37,531 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:28:37,531 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:28:37,531 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:28:37,531 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_506b4ca7-b3b4-4e31-b8ec-743a711b31d5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506b4ca7-b3b4-4e31-b8ec-743a711b31d5/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4e522f7269f01a0f0108ec2341cf17a6d715eaf63b892b25236d9e51e23a874 [2023-12-02 15:28:37,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:28:37,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:28:37,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:28:37,765 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:28:37,765 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:28:37,766 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506b4ca7-b3b4-4e31-b8ec-743a711b31d5/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.i [2023-12-02 15:28:40,460 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:28:40,786 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:28:40,787 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506b4ca7-b3b4-4e31-b8ec-743a711b31d5/sv-benchmarks/c/ldv-commit-tester/m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.i [2023-12-02 15:28:40,810 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506b4ca7-b3b4-4e31-b8ec-743a711b31d5/bin/utaipan-verify-nQ1chXbOIh/data/855b7e623/2f0605de5ebe40639fe48cdfb70063e3/FLAGa3503c261 [2023-12-02 15:28:40,825 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506b4ca7-b3b4-4e31-b8ec-743a711b31d5/bin/utaipan-verify-nQ1chXbOIh/data/855b7e623/2f0605de5ebe40639fe48cdfb70063e3 [2023-12-02 15:28:40,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:28:40,829 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:28:40,831 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:28:40,831 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:28:40,836 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:28:40,837 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:28:40" (1/1) ... [2023-12-02 15:28:40,838 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538b4e46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:40, skipping insertion in model container [2023-12-02 15:28:40,838 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:28:40" (1/1) ... [2023-12-02 15:28:40,909 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:28:41,423 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_506b4ca7-b3b4-4e31-b8ec-743a711b31d5/sv-benchmarks/c/ldv-commit-tester/m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.i[71148,71161] [2023-12-02 15:28:41,442 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:28:41,461 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:28:41,619 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_506b4ca7-b3b4-4e31-b8ec-743a711b31d5/sv-benchmarks/c/ldv-commit-tester/m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.i[71148,71161] [2023-12-02 15:28:41,627 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:28:41,650 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:28:41,650 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:28:41,656 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:28:41,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:41 WrapperNode [2023-12-02 15:28:41,656 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:28:41,657 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:28:41,657 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:28:41,658 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:28:41,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:41" (1/1) ... [2023-12-02 15:28:41,695 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:41" (1/1) ... [2023-12-02 15:28:41,753 INFO L138 Inliner]: procedures = 102, calls = 434, calls flagged for inlining = 49, calls inlined = 44, statements flattened = 1164 [2023-12-02 15:28:41,753 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:28:41,754 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:28:41,754 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:28:41,754 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:28:41,763 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:41" (1/1) ... [2023-12-02 15:28:41,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:41" (1/1) ... [2023-12-02 15:28:41,775 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:41" (1/1) ... [2023-12-02 15:28:41,775 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:41" (1/1) ... [2023-12-02 15:28:41,812 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:41" (1/1) ... [2023-12-02 15:28:41,819 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:41" (1/1) ... [2023-12-02 15:28:41,825 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:41" (1/1) ... [2023-12-02 15:28:41,833 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:41" (1/1) ... [2023-12-02 15:28:41,843 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:28:41,844 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:28:41,844 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:28:41,844 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:28:41,845 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:41" (1/1) ... [2023-12-02 15:28:41,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:28:41,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506b4ca7-b3b4-4e31-b8ec-743a711b31d5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:28:41,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506b4ca7-b3b4-4e31-b8ec-743a711b31d5/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:28:41,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506b4ca7-b3b4-4e31-b8ec-743a711b31d5/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:28:41,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 15:28:41,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 15:28:41,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 15:28:41,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 15:28:41,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 15:28:41,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 15:28:41,903 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 15:28:41,904 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 15:28:41,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 15:28:41,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-12-02 15:28:41,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-12-02 15:28:41,904 INFO L130 BoogieDeclarations]: Found specification of procedure extract_value [2023-12-02 15:28:41,904 INFO L138 BoogieDeclarations]: Found implementation of procedure extract_value [2023-12-02 15:28:41,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 15:28:41,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:28:41,905 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_destroy_user [2023-12-02 15:28:41,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_destroy_user [2023-12-02 15:28:41,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 15:28:41,905 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2023-12-02 15:28:41,905 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2023-12-02 15:28:41,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 15:28:41,905 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-12-02 15:28:41,905 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 15:28:41,906 INFO L130 BoogieDeclarations]: Found specification of procedure ibmpex_bmc_delete [2023-12-02 15:28:41,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ibmpex_bmc_delete [2023-12-02 15:28:41,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 15:28:41,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-12-02 15:28:41,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-12-02 15:28:41,906 INFO L130 BoogieDeclarations]: Found specification of procedure ibmpex_send_message [2023-12-02 15:28:41,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ibmpex_send_message [2023-12-02 15:28:41,906 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-12-02 15:28:41,906 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-12-02 15:28:41,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 15:28:41,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 15:28:41,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_device_create_file_dev_attr_of_sensor_device_attribute [2023-12-02 15:28:41,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_device_create_file_dev_attr_of_sensor_device_attribute [2023-12-02 15:28:41,907 INFO L130 BoogieDeclarations]: Found specification of procedure hwmon_device_unregister [2023-12-02 15:28:41,907 INFO L138 BoogieDeclarations]: Found implementation of procedure hwmon_device_unregister [2023-12-02 15:28:41,907 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-12-02 15:28:41,907 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-12-02 15:28:41,907 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-12-02 15:28:41,907 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-12-02 15:28:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-12-02 15:28:41,908 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-12-02 15:28:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:28:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2023-12-02 15:28:41,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2023-12-02 15:28:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_recv_msg [2023-12-02 15:28:41,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_recv_msg [2023-12-02 15:28:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 15:28:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2023-12-02 15:28:41,908 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2023-12-02 15:28:41,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:28:41,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:28:42,164 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:28:42,166 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:28:43,017 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:28:43,263 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:28:43,263 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 15:28:43,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:28:43 BoogieIcfgContainer [2023-12-02 15:28:43,265 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:28:43,267 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:28:43,267 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:28:43,270 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:28:43,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:28:40" (1/3) ... [2023-12-02 15:28:43,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597a8246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:28:43, skipping insertion in model container [2023-12-02 15:28:43,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:41" (2/3) ... [2023-12-02 15:28:43,272 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597a8246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:28:43, skipping insertion in model container [2023-12-02 15:28:43,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:28:43" (3/3) ... [2023-12-02 15:28:43,273 INFO L112 eAbstractionObserver]: Analyzing ICFG m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.i [2023-12-02 15:28:43,291 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:28:43,291 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:28:43,345 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:28:43,352 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;@f21745, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:28:43,353 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:28:43,357 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) [2023-12-02 15:28:43,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-02 15:28:43,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:28:43,374 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] [2023-12-02 15:28:43,374 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:28:43,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:28:43,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1485415927, now seen corresponding path program 1 times [2023-12-02 15:28:43,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:28:43,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559753570] [2023-12-02 15:28:43,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:28:43,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:28:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:28:43,982 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-02 15:28:43,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:28:43,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559753570] [2023-12-02 15:28:43,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559753570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:28:43,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:28:43,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:28:43,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710803555] [2023-12-02 15:28:43,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:28:43,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:28:43,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:28:44,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:28:44,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:28:44,018 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) [2023-12-02 15:28:45,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:28:45,057 INFO L93 Difference]: Finished difference Result 474 states and 668 transitions. [2023-12-02 15:28:45,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:28:45,060 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 [2023-12-02 15:28:45,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:28:45,071 INFO L225 Difference]: With dead ends: 474 [2023-12-02 15:28:45,071 INFO L226 Difference]: Without dead ends: 251 [2023-12-02 15:28:45,076 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 [2023-12-02 15:28:45,079 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 54 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:28:45,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 825 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 15:28:45,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-12-02 15:28:45,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 207. [2023-12-02 15:28:45,133 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) [2023-12-02 15:28:45,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 283 transitions. [2023-12-02 15:28:45,139 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 283 transitions. Word has length 93 [2023-12-02 15:28:45,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:28:45,140 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 283 transitions. [2023-12-02 15:28:45,140 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) [2023-12-02 15:28:45,141 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 283 transitions. [2023-12-02 15:28:45,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-02 15:28:45,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:28:45,147 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] [2023-12-02 15:28:45,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:28:45,148 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:28:45,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:28:45,148 INFO L85 PathProgramCache]: Analyzing trace with hash 100077592, now seen corresponding path program 1 times [2023-12-02 15:28:45,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:28:45,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106457596] [2023-12-02 15:28:45,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:28:45,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:28:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:28:45,651 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-02 15:28:45,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:28:45,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106457596] [2023-12-02 15:28:45,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106457596] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:28:45,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:28:45,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:28:45,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619664935] [2023-12-02 15:28:45,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:28:45,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:28:45,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:28:45,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:28:45,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:28:45,656 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) [2023-12-02 15:28:46,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:28:46,859 INFO L93 Difference]: Finished difference Result 607 states and 836 transitions. [2023-12-02 15:28:46,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:28:46,860 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 [2023-12-02 15:28:46,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:28:46,867 INFO L225 Difference]: With dead ends: 607 [2023-12-02 15:28:46,868 INFO L226 Difference]: Without dead ends: 603 [2023-12-02 15:28:46,868 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 [2023-12-02 15:28:46,869 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 625 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:28:46,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 596 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 15:28:46,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2023-12-02 15:28:46,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2023-12-02 15:28:46,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 401 states have (on average 1.319201995012469) internal successors, (529), 408 states have internal predecessors, (529), 150 states have call successors, (150), 52 states have call predecessors, (150), 51 states have return successors, (152), 148 states have call predecessors, (152), 148 states have call successors, (152) [2023-12-02 15:28:46,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 831 transitions. [2023-12-02 15:28:46,933 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 831 transitions. Word has length 97 [2023-12-02 15:28:46,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:28:46,934 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 831 transitions. [2023-12-02 15:28:46,934 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) [2023-12-02 15:28:46,935 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 831 transitions. [2023-12-02 15:28:46,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-02 15:28:46,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:28:46,938 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] [2023-12-02 15:28:46,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 15:28:46,938 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:28:46,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:28:46,939 INFO L85 PathProgramCache]: Analyzing trace with hash 417104701, now seen corresponding path program 1 times [2023-12-02 15:28:46,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:28:46,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602533195] [2023-12-02 15:28:46,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:28:46,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:28:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:28:47,235 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-02 15:28:47,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:28:47,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602533195] [2023-12-02 15:28:47,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602533195] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:28:47,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:28:47,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:28:47,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074839668] [2023-12-02 15:28:47,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:28:47,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:28:47,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:28:47,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:28:47,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:28:47,239 INFO L87 Difference]: Start difference. First operand 603 states and 831 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) [2023-12-02 15:28:47,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:28:47,876 INFO L93 Difference]: Finished difference Result 1204 states and 1661 transitions. [2023-12-02 15:28:47,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:28:47,877 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 [2023-12-02 15:28:47,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:28:47,885 INFO L225 Difference]: With dead ends: 1204 [2023-12-02 15:28:47,885 INFO L226 Difference]: Without dead ends: 1001 [2023-12-02 15:28:47,887 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 [2023-12-02 15:28:47,888 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 269 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:28:47,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 654 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 15:28:47,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2023-12-02 15:28:47,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 801. [2023-12-02 15:28:47,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 533 states have (on average 1.3170731707317074) internal successors, (702), 542 states have internal predecessors, (702), 199 states have call successors, (199), 69 states have call predecessors, (199), 68 states have return successors, (201), 197 states have call predecessors, (201), 197 states have call successors, (201) [2023-12-02 15:28:47,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1102 transitions. [2023-12-02 15:28:47,951 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1102 transitions. Word has length 105 [2023-12-02 15:28:47,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:28:47,952 INFO L495 AbstractCegarLoop]: Abstraction has 801 states and 1102 transitions. [2023-12-02 15:28:47,952 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) [2023-12-02 15:28:47,953 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1102 transitions. [2023-12-02 15:28:47,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-02 15:28:47,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:28:47,956 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] [2023-12-02 15:28:47,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 15:28:47,957 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:28:47,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:28:47,957 INFO L85 PathProgramCache]: Analyzing trace with hash 415529238, now seen corresponding path program 1 times [2023-12-02 15:28:47,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:28:47,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155697049] [2023-12-02 15:28:47,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:28:47,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:28:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:28:48,335 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-02 15:28:48,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:28:48,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155697049] [2023-12-02 15:28:48,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155697049] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:28:48,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774940065] [2023-12-02 15:28:48,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:28:48,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:28:48,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506b4ca7-b3b4-4e31-b8ec-743a711b31d5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:28:48,339 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506b4ca7-b3b4-4e31-b8ec-743a711b31d5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:28:48,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506b4ca7-b3b4-4e31-b8ec-743a711b31d5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:28:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:28:48,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 1572 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:28:48,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:28:48,989 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-02 15:28:48,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:28:49,086 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-02 15:28:49,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774940065] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:28:49,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [576888510] [2023-12-02 15:28:49,108 INFO L159 IcfgInterpreter]: Started Sifa with 92 locations of interest [2023-12-02 15:28:49,109 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:28:49,113 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:28:49,118 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:28:49,119 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:29:04,608 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_handler_precall with input of size 552 for LOIs [2023-12-02 15:29:06,083 INFO L197 IcfgInterpreter]: Interpreting procedure kzalloc with input of size 547 for LOIs [2023-12-02 15:29:11,314 INFO L197 IcfgInterpreter]: Interpreting procedure kmalloc with input of size 551 for LOIs [2023-12-02 15:29:16,647 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 553 for LOIs [2023-12-02 15:29:17,999 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:29:37,563 WARN L293 SmtUtils]: Spent 14.56s on a formula simplification. DAG size of input: 552 DAG size of output: 546 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:29:55,995 WARN L293 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 542 DAG size of output: 540 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:30:24,723 WARN L293 SmtUtils]: Spent 9.10s on a formula simplification. DAG size of input: 547 DAG size of output: 543 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:30:34,450 WARN L293 SmtUtils]: Spent 8.45s on a formula simplification. DAG size of input: 558 DAG size of output: 554 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:30:43,811 WARN L293 SmtUtils]: Spent 6.89s on a formula simplification. DAG size of input: 551 DAG size of output: 547 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:30:53,582 WARN L293 SmtUtils]: Spent 7.32s on a formula simplification. DAG size of input: 563 DAG size of output: 559 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:31:05,170 WARN L293 SmtUtils]: Spent 9.26s on a formula simplification. DAG size of input: 553 DAG size of output: 549 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:31:16,706 WARN L293 SmtUtils]: Spent 8.91s on a formula simplification. DAG size of input: 559 DAG size of output: 555 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:31:27,359 WARN L293 SmtUtils]: Spent 7.93s on a formula simplification. DAG size of input: 559 DAG size of output: 555 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:31:38,499 WARN L293 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 563 DAG size of output: 559 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:31:46,656 WARN L293 SmtUtils]: Spent 7.36s on a formula simplification. DAG size of input: 558 DAG size of output: 554 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:31:54,162 WARN L293 SmtUtils]: Spent 6.64s on a formula simplification. DAG size of input: 564 DAG size of output: 560 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:32:01,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [576888510] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:32:01,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:32:01,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [4, 4, 4] total 27 [2023-12-02 15:32:01,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117141970] [2023-12-02 15:32:01,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:32:01,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-02 15:32:01,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:32:01,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-02 15:32:01,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=606, Unknown=14, NotChecked=0, Total=702 [2023-12-02 15:32:01,744 INFO L87 Difference]: Start difference. First operand 801 states and 1102 transitions. Second operand has 23 states, 18 states have (on average 3.611111111111111) internal successors, (65), 16 states have internal predecessors, (65), 6 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2023-12-02 15:32:12,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:32:14,023 WARN L539 Checker$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 15:32:16,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:32:18,871 WARN L539 Checker$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 15:32:20,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:32:22,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:32:28,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:32:31,517 WARN L539 Checker$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 15:32:35,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:32:39,522 WARN L539 Checker$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 15:32:42,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:32:45,748 WARN L539 Checker$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 15:32:49,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:32:54,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:33:29,707 WARN L293 SmtUtils]: Spent 29.88s on a formula simplification. DAG size of input: 564 DAG size of output: 565 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:33:32,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:34:04,199 WARN L293 SmtUtils]: Spent 29.95s on a formula simplification. DAG size of input: 564 DAG size of output: 565 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:34:06,729 WARN L539 Checker$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 15:34:18,726 WARN L293 SmtUtils]: Spent 9.90s on a formula simplification that was a NOOP. DAG size: 558 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:34:20,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:34:54,024 WARN L293 SmtUtils]: Spent 31.22s on a formula simplification. DAG size of input: 565 DAG size of output: 566 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:34:56,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:34:58,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:35:01,327 WARN L539 Checker$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 15:35:03,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:35:05,993 WARN L539 Checker$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 15:35:08,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:35:34,221 WARN L293 SmtUtils]: Spent 11.42s on a formula simplification that was a NOOP. DAG size: 571 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:35:36,441 WARN L539 Checker$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 15:35:38,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:35:40,524 WARN L539 Checker$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 15:35:42,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:35:44,628 WARN L539 Checker$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 15:35:46,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:35:48,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:36:14,808 WARN L293 SmtUtils]: Spent 11.87s on a formula simplification that was a NOOP. DAG size: 575 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:36:16,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:36:18,881 WARN L539 Checker$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 15:36:20,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:36:22,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:36:25,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:36:27,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:36:29,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:36:31,569 WARN L539 Checker$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 15:36:33,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:36:35,916 WARN L539 Checker$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 15:36:37,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:36:40,007 WARN L539 Checker$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 15:36:42,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:36:43,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:36:45,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:36:47,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:36:50,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:36:52,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:37:28,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:37:28,603 INFO L93 Difference]: Finished difference Result 1675 states and 2299 transitions. [2023-12-02 15:37:28,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 15:37:28,604 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 18 states have (on average 3.611111111111111) internal successors, (65), 16 states have internal predecessors, (65), 6 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 134 [2023-12-02 15:37:28,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:37:28,609 INFO L225 Difference]: With dead ends: 1675 [2023-12-02 15:37:28,609 INFO L226 Difference]: Without dead ends: 878 [2023-12-02 15:37:28,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 377 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 323.3s TimeCoverageRelationStatistics Valid=108, Invalid=916, Unknown=32, NotChecked=0, Total=1056 [2023-12-02 15:37:28,612 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 61 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 14 mSolverCounterUnsat, 52 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 165.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 2590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 52 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 167.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:37:28,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1630 Invalid, 2590 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 2524 Invalid, 52 Unknown, 0 Unchecked, 167.0s Time] [2023-12-02 15:37:28,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2023-12-02 15:37:28,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 871. [2023-12-02 15:37:28,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 577 states have (on average 1.3119584055459272) internal successors, (757), 588 states have internal predecessors, (757), 215 states have call successors, (215), 80 states have call predecessors, (215), 78 states have return successors, (220), 210 states have call predecessors, (220), 213 states have call successors, (220) [2023-12-02 15:37:28,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1192 transitions. [2023-12-02 15:37:28,757 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1192 transitions. Word has length 134 [2023-12-02 15:37:28,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:37:28,757 INFO L495 AbstractCegarLoop]: Abstraction has 871 states and 1192 transitions. [2023-12-02 15:37:28,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 18 states have (on average 3.611111111111111) internal successors, (65), 16 states have internal predecessors, (65), 6 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2023-12-02 15:37:28,758 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1192 transitions. [2023-12-02 15:37:28,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-02 15:37:28,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:37:28,762 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-02 15:37:28,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506b4ca7-b3b4-4e31-b8ec-743a711b31d5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:37:28,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506b4ca7-b3b4-4e31-b8ec-743a711b31d5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:37:28,963 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:37:28,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:37:28,963 INFO L85 PathProgramCache]: Analyzing trace with hash 421818929, now seen corresponding path program 1 times [2023-12-02 15:37:28,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:37:28,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881630533] [2023-12-02 15:37:28,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:37:28,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:37:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:37:29,340 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 15:37:29,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:37:29,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881630533] [2023-12-02 15:37:29,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881630533] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:37:29,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145705582] [2023-12-02 15:37:29,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:37:29,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:37:29,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506b4ca7-b3b4-4e31-b8ec-743a711b31d5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:37:29,342 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506b4ca7-b3b4-4e31-b8ec-743a711b31d5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:37:29,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506b4ca7-b3b4-4e31-b8ec-743a711b31d5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 15:37:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:37:29,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 1600 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:37:29,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:37:29,968 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 15:37:29,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:37:30,071 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 15:37:30,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145705582] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:37:30,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1673766245] [2023-12-02 15:37:30,075 INFO L159 IcfgInterpreter]: Started Sifa with 94 locations of interest [2023-12-02 15:37:30,075 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:37:30,076 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:37:30,076 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:37:30,076 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs