./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--regulator--isl6271a-regulator.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--regulator--isl6271a-regulator.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b7b42d40a01333bd7cf600d1931e5c326b61c631d3a1040aaad3e0a3658ee3cf --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:13:14,245 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:13:14,367 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-12 00:13:14,376 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:13:14,377 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:13:14,416 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:13:14,417 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:13:14,417 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:13:14,418 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:13:14,423 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:13:14,424 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:13:14,425 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:13:14,426 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:13:14,426 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:13:14,427 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:13:14,427 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:13:14,427 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:13:14,428 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:13:14,428 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:13:14,429 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:13:14,429 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:13:14,438 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:13:14,439 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:13:14,440 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:13:14,440 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:13:14,440 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:13:14,441 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:13:14,441 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:13:14,442 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:13:14,442 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:13:14,443 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:13:14,444 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:13:14,444 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:13:14,444 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:13:14,444 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:13:14,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:13:14,445 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:13:14,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:13:14,445 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:13:14,446 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:13:14,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:13:14,446 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:13:14,446 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:13:14,447 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:13:14,447 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_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7b42d40a01333bd7cf600d1931e5c326b61c631d3a1040aaad3e0a3658ee3cf [2023-11-12 00:13:14,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:13:14,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:13:14,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:13:14,826 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:13:14,827 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:13:14,828 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--regulator--isl6271a-regulator.ko-main.cil.out.i [2023-11-12 00:13:18,026 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:13:18,609 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:13:18,610 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--regulator--isl6271a-regulator.ko-main.cil.out.i [2023-11-12 00:13:18,658 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/data/ee19f2dc7/5bd60064cdfc44d5bc14891f260b0925/FLAG9aee89dcd [2023-11-12 00:13:18,680 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/data/ee19f2dc7/5bd60064cdfc44d5bc14891f260b0925 [2023-11-12 00:13:18,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:13:18,690 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:13:18,694 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:13:18,695 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:13:18,701 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:13:18,702 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:18" (1/1) ... [2023-11-12 00:13:18,703 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c91d81d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:18, skipping insertion in model container [2023-11-12 00:13:18,704 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:18" (1/1) ... [2023-11-12 00:13:18,797 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:13:19,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:13:19,783 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:13:20,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:13:20,177 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:13:20,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:20 WrapperNode [2023-11-12 00:13:20,178 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:13:20,179 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:13:20,180 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:13:20,180 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:13:20,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:20" (1/1) ... [2023-11-12 00:13:20,247 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:20" (1/1) ... [2023-11-12 00:13:20,329 INFO L138 Inliner]: procedures = 99, calls = 349, calls flagged for inlining = 41, calls inlined = 33, statements flattened = 779 [2023-11-12 00:13:20,330 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:13:20,331 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:13:20,332 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:13:20,332 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:13:20,342 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:20" (1/1) ... [2023-11-12 00:13:20,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:20" (1/1) ... [2023-11-12 00:13:20,364 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:20" (1/1) ... [2023-11-12 00:13:20,370 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:20" (1/1) ... [2023-11-12 00:13:20,422 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:20" (1/1) ... [2023-11-12 00:13:20,428 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:20" (1/1) ... [2023-11-12 00:13:20,434 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:20" (1/1) ... [2023-11-12 00:13:20,447 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:20" (1/1) ... [2023-11-12 00:13:20,456 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:13:20,457 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:13:20,458 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:13:20,458 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:13:20,459 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:20" (1/1) ... [2023-11-12 00:13:20,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:13:20,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:20,516 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:13:20,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:13:20,558 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_list_voltage_linear [2023-11-12 00:13:20,558 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_list_voltage_linear [2023-11-12 00:13:20,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 00:13:20,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 00:13:20,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:13:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-12 00:13:20,559 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-12 00:13:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-12 00:13:20,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-12 00:13:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_unregister [2023-11-12 00:13:20,561 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_unregister [2023-11-12 00:13:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:13:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-12 00:13:20,562 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-12 00:13:20,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:13:20,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:13:20,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:13:20,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:13:20,563 INFO L130 BoogieDeclarations]: Found specification of procedure rdev_get_drvdata [2023-11-12 00:13:20,564 INFO L138 BoogieDeclarations]: Found implementation of procedure rdev_get_drvdata [2023-11-12 00:13:20,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:13:20,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mtx_of_isl_pmic [2023-11-12 00:13:20,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mtx_of_isl_pmic [2023-11-12 00:13:20,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:13:20,566 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-12 00:13:20,566 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-12 00:13:20,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:13:20,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mtx_of_isl_pmic [2023-11-12 00:13:20,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mtx_of_isl_pmic [2023-11-12 00:13:20,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:13:20,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:13:20,569 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-12 00:13:20,569 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-12 00:13:20,835 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:13:20,839 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:13:22,064 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:13:22,471 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:13:22,471 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:13:22,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:22 BoogieIcfgContainer [2023-11-12 00:13:22,475 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:13:22,479 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:13:22,479 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:13:22,483 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:13:22,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:13:18" (1/3) ... [2023-11-12 00:13:22,484 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121de616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:13:22, skipping insertion in model container [2023-11-12 00:13:22,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:20" (2/3) ... [2023-11-12 00:13:22,487 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121de616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:13:22, skipping insertion in model container [2023-11-12 00:13:22,487 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:22" (3/3) ... [2023-11-12 00:13:22,489 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--regulator--isl6271a-regulator.ko-main.cil.out.i [2023-11-12 00:13:22,508 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:13:22,508 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-12 00:13:22,575 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:13:22,584 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;@67d79967, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:13:22,584 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-12 00:13:22,592 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 92 states have (on average 1.565217391304348) internal successors, (144), 108 states have internal predecessors, (144), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-12 00:13:22,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 00:13:22,606 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:22,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:22,608 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-12 00:13:22,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:22,616 INFO L85 PathProgramCache]: Analyzing trace with hash 367632602, now seen corresponding path program 1 times [2023-11-12 00:13:22,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:22,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323038171] [2023-11-12 00:13:22,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:22,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:23,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:23,255 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:23,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323038171] [2023-11-12 00:13:23,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323038171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:23,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:23,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:13:23,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459858327] [2023-11-12 00:13:23,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:23,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:23,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:23,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:23,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:23,327 INFO L87 Difference]: Start difference. First operand has 143 states, 92 states have (on average 1.565217391304348) internal successors, (144), 108 states have internal predecessors, (144), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:23,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:23,782 INFO L93 Difference]: Finished difference Result 376 states and 545 transitions. [2023-11-12 00:13:23,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:23,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-12 00:13:23,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:23,799 INFO L225 Difference]: With dead ends: 376 [2023-11-12 00:13:23,799 INFO L226 Difference]: Without dead ends: 206 [2023-11-12 00:13:23,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:23,811 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 123 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:23,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 311 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:13:23,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-11-12 00:13:23,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2023-11-12 00:13:23,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 138 states have (on average 1.4782608695652173) internal successors, (204), 147 states have internal predecessors, (204), 39 states have call successors, (39), 19 states have call predecessors, (39), 19 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-12 00:13:23,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 282 transitions. [2023-11-12 00:13:23,899 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 282 transitions. Word has length 10 [2023-11-12 00:13:23,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:23,899 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 282 transitions. [2023-11-12 00:13:23,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:23,900 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 282 transitions. [2023-11-12 00:13:23,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-12 00:13:23,903 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:23,904 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:23,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:13:23,905 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-12 00:13:23,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:23,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1329924295, now seen corresponding path program 1 times [2023-11-12 00:13:23,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:23,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480179647] [2023-11-12 00:13:23,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:23,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:24,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:13:24,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:24,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480179647] [2023-11-12 00:13:24,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480179647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:24,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:24,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:13:24,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500344222] [2023-11-12 00:13:24,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:24,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:24,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:24,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:24,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:24,256 INFO L87 Difference]: Start difference. First operand 206 states and 282 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:24,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:24,683 INFO L93 Difference]: Finished difference Result 411 states and 563 transitions. [2023-11-12 00:13:24,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:24,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-12 00:13:24,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:24,690 INFO L225 Difference]: With dead ends: 411 [2023-11-12 00:13:24,690 INFO L226 Difference]: Without dead ends: 407 [2023-11-12 00:13:24,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:24,693 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 153 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:24,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 268 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:13:24,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2023-11-12 00:13:24,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 401. [2023-11-12 00:13:24,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 275 states have (on average 1.4654545454545456) internal successors, (403), 284 states have internal predecessors, (403), 78 states have call successors, (78), 38 states have call predecessors, (78), 38 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-11-12 00:13:24,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 559 transitions. [2023-11-12 00:13:24,757 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 559 transitions. Word has length 18 [2023-11-12 00:13:24,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:24,758 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 559 transitions. [2023-11-12 00:13:24,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:24,759 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 559 transitions. [2023-11-12 00:13:24,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:13:24,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:24,762 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 00:13:24,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:13:24,763 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-12 00:13:24,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:24,764 INFO L85 PathProgramCache]: Analyzing trace with hash -43535082, now seen corresponding path program 1 times [2023-11-12 00:13:24,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:24,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182708357] [2023-11-12 00:13:24,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:24,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:25,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:25,032 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:25,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182708357] [2023-11-12 00:13:25,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182708357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:25,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:25,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:13:25,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613111145] [2023-11-12 00:13:25,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:25,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:13:25,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:25,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:13:25,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:13:25,036 INFO L87 Difference]: Start difference. First operand 401 states and 559 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 00:13:25,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:25,465 INFO L93 Difference]: Finished difference Result 878 states and 1222 transitions. [2023-11-12 00:13:25,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:13:25,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2023-11-12 00:13:25,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:25,473 INFO L225 Difference]: With dead ends: 878 [2023-11-12 00:13:25,474 INFO L226 Difference]: Without dead ends: 478 [2023-11-12 00:13:25,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:13:25,478 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 252 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:25,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 329 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:13:25,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2023-11-12 00:13:25,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 476. [2023-11-12 00:13:25,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 326 states have (on average 1.4478527607361964) internal successors, (472), 335 states have internal predecessors, (472), 92 states have call successors, (92), 48 states have call predecessors, (92), 48 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-12 00:13:25,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 656 transitions. [2023-11-12 00:13:25,552 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 656 transitions. Word has length 27 [2023-11-12 00:13:25,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:25,552 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 656 transitions. [2023-11-12 00:13:25,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 00:13:25,553 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 656 transitions. [2023-11-12 00:13:25,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-12 00:13:25,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:25,564 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:25,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:13:25,564 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-12 00:13:25,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:25,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1588363498, now seen corresponding path program 1 times [2023-11-12 00:13:25,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:25,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507559516] [2023-11-12 00:13:25,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:25,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:25,902 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 00:13:25,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:25,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507559516] [2023-11-12 00:13:25,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507559516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:25,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:25,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:13:25,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115153445] [2023-11-12 00:13:25,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:25,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:13:25,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:25,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:13:25,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:13:25,908 INFO L87 Difference]: Start difference. First operand 476 states and 656 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:26,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:26,769 INFO L93 Difference]: Finished difference Result 987 states and 1359 transitions. [2023-11-12 00:13:26,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:13:26,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-11-12 00:13:26,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:26,778 INFO L225 Difference]: With dead ends: 987 [2023-11-12 00:13:26,778 INFO L226 Difference]: Without dead ends: 696 [2023-11-12 00:13:26,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:13:26,793 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 200 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:26,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 569 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 00:13:26,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-11-12 00:13:26,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 480. [2023-11-12 00:13:26,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 330 states have (on average 1.4424242424242424) internal successors, (476), 339 states have internal predecessors, (476), 92 states have call successors, (92), 48 states have call predecessors, (92), 48 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-12 00:13:26,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 660 transitions. [2023-11-12 00:13:26,862 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 660 transitions. Word has length 28 [2023-11-12 00:13:26,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:26,863 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 660 transitions. [2023-11-12 00:13:26,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:26,863 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 660 transitions. [2023-11-12 00:13:26,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-12 00:13:26,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:26,866 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 00:13:26,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:13:26,866 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-12 00:13:26,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:26,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1779035419, now seen corresponding path program 1 times [2023-11-12 00:13:26,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:26,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983607719] [2023-11-12 00:13:26,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:26,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:27,116 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 00:13:27,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:27,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983607719] [2023-11-12 00:13:27,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983607719] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:27,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:27,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:13:27,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547958272] [2023-11-12 00:13:27,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:27,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:27,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:27,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:27,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:27,120 INFO L87 Difference]: Start difference. First operand 480 states and 660 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 00:13:27,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:27,430 INFO L93 Difference]: Finished difference Result 905 states and 1254 transitions. [2023-11-12 00:13:27,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:27,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2023-11-12 00:13:27,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:27,437 INFO L225 Difference]: With dead ends: 905 [2023-11-12 00:13:27,438 INFO L226 Difference]: Without dead ends: 504 [2023-11-12 00:13:27,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:27,442 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 4 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:27,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 269 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:13:27,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2023-11-12 00:13:27,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2023-11-12 00:13:27,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 348 states have (on average 1.4252873563218391) internal successors, (496), 357 states have internal predecessors, (496), 98 states have call successors, (98), 48 states have call predecessors, (98), 48 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-11-12 00:13:27,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 692 transitions. [2023-11-12 00:13:27,488 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 692 transitions. Word has length 35 [2023-11-12 00:13:27,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:27,489 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 692 transitions. [2023-11-12 00:13:27,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 00:13:27,490 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 692 transitions. [2023-11-12 00:13:27,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-12 00:13:27,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:27,496 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 00:13:27,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:13:27,500 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-12 00:13:27,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:27,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1883946853, now seen corresponding path program 1 times [2023-11-12 00:13:27,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:27,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818203416] [2023-11-12 00:13:27,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:27,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:27,877 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 00:13:27,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:27,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818203416] [2023-11-12 00:13:27,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818203416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:27,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:27,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:13:27,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230570535] [2023-11-12 00:13:27,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:27,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:13:27,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:27,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:13:27,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:13:27,885 INFO L87 Difference]: Start difference. First operand 504 states and 692 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-12 00:13:28,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:28,319 INFO L93 Difference]: Finished difference Result 933 states and 1282 transitions. [2023-11-12 00:13:28,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:13:28,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 46 [2023-11-12 00:13:28,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:28,324 INFO L225 Difference]: With dead ends: 933 [2023-11-12 00:13:28,325 INFO L226 Difference]: Without dead ends: 508 [2023-11-12 00:13:28,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:13:28,327 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 3 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:28,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 399 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:13:28,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2023-11-12 00:13:28,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 506. [2023-11-12 00:13:28,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 350 states have (on average 1.4228571428571428) internal successors, (498), 359 states have internal predecessors, (498), 98 states have call successors, (98), 48 states have call predecessors, (98), 48 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-11-12 00:13:28,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 694 transitions. [2023-11-12 00:13:28,372 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 694 transitions. Word has length 46 [2023-11-12 00:13:28,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:28,374 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 694 transitions. [2023-11-12 00:13:28,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-12 00:13:28,375 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 694 transitions. [2023-11-12 00:13:28,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-12 00:13:28,376 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:28,377 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-11-12 00:13:28,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 00:13:28,377 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-12 00:13:28,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:28,378 INFO L85 PathProgramCache]: Analyzing trace with hash -2056205549, now seen corresponding path program 1 times [2023-11-12 00:13:28,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:28,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752488068] [2023-11-12 00:13:28,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:28,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:28,651 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-12 00:13:28,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:28,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752488068] [2023-11-12 00:13:28,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752488068] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:13:28,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42921874] [2023-11-12 00:13:28,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:28,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:13:28,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:28,660 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:13:28,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:13:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:29,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:13:29,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:29,184 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-12 00:13:29,185 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:13:29,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42921874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:29,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:13:29,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-12 00:13:29,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742709849] [2023-11-12 00:13:29,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:29,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:13:29,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:29,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:13:29,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:13:29,187 INFO L87 Difference]: Start difference. First operand 506 states and 694 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-12 00:13:29,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:29,727 INFO L93 Difference]: Finished difference Result 939 states and 1294 transitions. [2023-11-12 00:13:29,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:13:29,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 49 [2023-11-12 00:13:29,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:29,732 INFO L225 Difference]: With dead ends: 939 [2023-11-12 00:13:29,732 INFO L226 Difference]: Without dead ends: 512 [2023-11-12 00:13:29,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:13:29,734 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 12 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:29,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 401 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 00:13:29,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2023-11-12 00:13:29,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 510. [2023-11-12 00:13:29,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 356 states have (on average 1.4101123595505618) internal successors, (502), 363 states have internal predecessors, (502), 98 states have call successors, (98), 48 states have call predecessors, (98), 48 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-11-12 00:13:29,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 698 transitions. [2023-11-12 00:13:29,769 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 698 transitions. Word has length 49 [2023-11-12 00:13:29,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:29,770 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 698 transitions. [2023-11-12 00:13:29,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-12 00:13:29,770 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 698 transitions. [2023-11-12 00:13:29,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-12 00:13:29,772 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:29,772 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-11-12 00:13:29,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:29,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:13:29,981 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-12 00:13:29,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:29,982 INFO L85 PathProgramCache]: Analyzing trace with hash 682137585, now seen corresponding path program 1 times [2023-11-12 00:13:29,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:29,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799842456] [2023-11-12 00:13:29,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:29,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:30,184 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-12 00:13:30,184 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:30,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799842456] [2023-11-12 00:13:30,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799842456] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:30,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:30,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:13:30,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853543429] [2023-11-12 00:13:30,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:30,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:30,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:30,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:30,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:30,188 INFO L87 Difference]: Start difference. First operand 510 states and 698 transitions. Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 00:13:30,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:30,463 INFO L93 Difference]: Finished difference Result 512 states and 700 transitions. [2023-11-12 00:13:30,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:30,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2023-11-12 00:13:30,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:30,467 INFO L225 Difference]: With dead ends: 512 [2023-11-12 00:13:30,468 INFO L226 Difference]: Without dead ends: 510 [2023-11-12 00:13:30,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:30,469 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 6 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:30,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 258 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:13:30,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2023-11-12 00:13:30,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 504. [2023-11-12 00:13:30,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 352 states have (on average 1.3977272727272727) internal successors, (492), 357 states have internal predecessors, (492), 98 states have call successors, (98), 48 states have call predecessors, (98), 48 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-11-12 00:13:30,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 688 transitions. [2023-11-12 00:13:30,535 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 688 transitions. Word has length 50 [2023-11-12 00:13:30,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:30,536 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 688 transitions. [2023-11-12 00:13:30,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 00:13:30,536 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 688 transitions. [2023-11-12 00:13:30,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-12 00:13:30,538 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:30,538 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:30,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 00:13:30,539 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-12 00:13:30,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:30,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1222690303, now seen corresponding path program 1 times [2023-11-12 00:13:30,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:30,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213834143] [2023-11-12 00:13:30,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:30,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:30,817 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-12 00:13:30,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:30,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213834143] [2023-11-12 00:13:30,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213834143] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:13:30,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415173625] [2023-11-12 00:13:30,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:30,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:13:30,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:30,822 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:13:30,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:13:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:31,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 00:13:31,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:31,255 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-12 00:13:31,255 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:13:31,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415173625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:31,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:13:31,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-12 00:13:31,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376133614] [2023-11-12 00:13:31,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:31,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:31,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:31,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:31,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:13:31,258 INFO L87 Difference]: Start difference. First operand 504 states and 688 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-12 00:13:31,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:31,528 INFO L93 Difference]: Finished difference Result 810 states and 1108 transitions. [2023-11-12 00:13:31,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:31,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 55 [2023-11-12 00:13:31,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:31,533 INFO L225 Difference]: With dead ends: 810 [2023-11-12 00:13:31,533 INFO L226 Difference]: Without dead ends: 509 [2023-11-12 00:13:31,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:13:31,535 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 4 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:31,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 266 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:13:31,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2023-11-12 00:13:31,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2023-11-12 00:13:31,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 356 states have (on average 1.396067415730337) internal successors, (497), 361 states have internal predecessors, (497), 99 states have call successors, (99), 48 states have call predecessors, (99), 48 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-12 00:13:31,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 695 transitions. [2023-11-12 00:13:31,572 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 695 transitions. Word has length 55 [2023-11-12 00:13:31,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:31,572 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 695 transitions. [2023-11-12 00:13:31,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-12 00:13:31,573 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 695 transitions. [2023-11-12 00:13:31,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-12 00:13:31,575 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:31,575 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:31,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:31,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:13:31,785 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-12 00:13:31,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:31,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1867357074, now seen corresponding path program 1 times [2023-11-12 00:13:31,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:31,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485280760] [2023-11-12 00:13:31,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:31,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:32,074 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-12 00:13:32,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:32,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485280760] [2023-11-12 00:13:32,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485280760] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:13:32,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835498239] [2023-11-12 00:13:32,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:32,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:13:32,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:32,077 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:13:32,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:13:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:32,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 00:13:32,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:32,522 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-12 00:13:32,522 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:13:32,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835498239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:32,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:13:32,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-12 00:13:32,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195038089] [2023-11-12 00:13:32,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:32,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:32,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:32,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:32,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:13:32,525 INFO L87 Difference]: Start difference. First operand 509 states and 695 transitions. Second operand has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 00:13:32,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:32,756 INFO L93 Difference]: Finished difference Result 509 states and 695 transitions. [2023-11-12 00:13:32,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:32,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2023-11-12 00:13:32,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:32,761 INFO L225 Difference]: With dead ends: 509 [2023-11-12 00:13:32,761 INFO L226 Difference]: Without dead ends: 508 [2023-11-12 00:13:32,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:13:32,763 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 2 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:32,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 263 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:13:32,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2023-11-12 00:13:32,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2023-11-12 00:13:32,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 356 states have (on average 1.3904494382022472) internal successors, (495), 360 states have internal predecessors, (495), 99 states have call successors, (99), 48 states have call predecessors, (99), 48 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-12 00:13:32,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 693 transitions. [2023-11-12 00:13:32,797 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 693 transitions. Word has length 59 [2023-11-12 00:13:32,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:32,798 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 693 transitions. [2023-11-12 00:13:32,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 00:13:32,799 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 693 transitions. [2023-11-12 00:13:32,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-12 00:13:32,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:32,801 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:32,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:33,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-12 00:13:33,010 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-12 00:13:33,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:33,011 INFO L85 PathProgramCache]: Analyzing trace with hash 2018413521, now seen corresponding path program 1 times [2023-11-12 00:13:33,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:33,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321607017] [2023-11-12 00:13:33,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:33,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:33,264 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-12 00:13:33,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:33,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321607017] [2023-11-12 00:13:33,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321607017] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:13:33,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768447603] [2023-11-12 00:13:33,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:33,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:13:33,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:33,267 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:13:33,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda389cf-feba-499e-a0e9-4c3a938abc4e/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 00:13:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:33,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 1183 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:13:33,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:33,771 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-12 00:13:33,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:13:33,834 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-12 00:13:33,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768447603] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:13:33,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2074596179] [2023-11-12 00:13:33,859 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-11-12 00:13:33,859 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:13:33,865 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:13:33,871 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:13:33,872 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:14:01,808 INFO L197 IcfgInterpreter]: Interpreting procedure regulator_unregister with input of size 81 for LOIs [2023-11-12 00:14:01,822 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 329 for LOIs [2023-11-12 00:14:03,708 INFO L180 IcfgInterpreter]: Interpretation finished