./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh --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 32bit --witnessprinter.graph.data.programhash cac2372de612a50e6cea0e2672ab51101a6ffa3bb2603a06b5c5aa59090db116 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:19:37,901 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:19:37,963 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 19:19:37,968 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:19:37,968 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:19:37,993 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:19:37,994 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:19:37,994 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:19:37,995 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:19:37,995 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:19:37,996 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:19:37,996 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:19:37,997 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:19:37,997 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:19:37,998 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:19:37,998 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:19:37,999 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:19:37,999 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:19:38,000 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:19:38,000 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:19:38,001 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:19:38,001 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:19:38,002 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:19:38,003 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:19:38,003 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:19:38,003 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:19:38,004 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:19:38,004 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:19:38,005 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:19:38,005 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:19:38,005 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:19:38,006 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 19:19:38,006 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 19:19:38,007 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:19:38,007 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:19:38,007 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:19:38,008 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:19:38,008 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:19:38,009 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:19:38,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:19:38,009 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:19:38,010 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:19:38,010 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:19:38,010 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:19:38,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:19:38,011 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:19:38,011 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:19:38,011 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:19:38,011 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:19:38,011 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_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cac2372de612a50e6cea0e2672ab51101a6ffa3bb2603a06b5c5aa59090db116 [2023-12-02 19:19:38,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:19:38,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:19:38,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:19:38,272 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:19:38,273 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:19:38,274 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-1.i [2023-12-02 19:19:40,998 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:19:41,240 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:19:41,241 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-1.i [2023-12-02 19:19:41,257 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/data/04768dde9/27e43b0987524ef8965c9db417d5236f/FLAG0af17c5c3 [2023-12-02 19:19:41,271 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/data/04768dde9/27e43b0987524ef8965c9db417d5236f [2023-12-02 19:19:41,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:19:41,274 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:19:41,275 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:19:41,275 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:19:41,280 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:19:41,280 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:19:41" (1/1) ... [2023-12-02 19:19:41,282 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@624353df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:41, skipping insertion in model container [2023-12-02 19:19:41,282 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:19:41" (1/1) ... [2023-12-02 19:19:41,331 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:19:41,649 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:19:41,665 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:19:41,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:19:41,748 WARN L675 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:19:41,754 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:19:41,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:41 WrapperNode [2023-12-02 19:19:41,755 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:19:41,756 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:19:41,756 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:19:41,756 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:19:41,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:41" (1/1) ... [2023-12-02 19:19:41,779 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:41" (1/1) ... [2023-12-02 19:19:41,804 INFO L138 Inliner]: procedures = 166, calls = 73, calls flagged for inlining = 25, calls inlined = 19, statements flattened = 127 [2023-12-02 19:19:41,805 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:19:41,805 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:19:41,805 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:19:41,805 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:19:41,812 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:41" (1/1) ... [2023-12-02 19:19:41,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:41" (1/1) ... [2023-12-02 19:19:41,817 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:41" (1/1) ... [2023-12-02 19:19:41,818 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:41" (1/1) ... [2023-12-02 19:19:41,828 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:41" (1/1) ... [2023-12-02 19:19:41,831 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:41" (1/1) ... [2023-12-02 19:19:41,834 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:41" (1/1) ... [2023-12-02 19:19:41,836 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:41" (1/1) ... [2023-12-02 19:19:41,840 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:19:41,841 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:19:41,841 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:19:41,841 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:19:41,842 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:41" (1/1) ... [2023-12-02 19:19:41,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:19:41,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:19:41,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:19:41,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:19:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 19:19:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2023-12-02 19:19:41,908 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2023-12-02 19:19:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 19:19:41,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 19:19:41,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2023-12-02 19:19:41,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2023-12-02 19:19:41,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 19:19:41,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 19:19:41,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:19:41,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 19:19:41,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 19:19:41,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 19:19:41,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 19:19:41,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:19:41,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:19:42,039 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:19:42,042 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:19:42,249 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:19:42,338 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:19:42,338 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 19:19:42,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:19:42 BoogieIcfgContainer [2023-12-02 19:19:42,340 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:19:42,343 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:19:42,343 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:19:42,346 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:19:42,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:19:41" (1/3) ... [2023-12-02 19:19:42,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac508e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:19:42, skipping insertion in model container [2023-12-02 19:19:42,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:41" (2/3) ... [2023-12-02 19:19:42,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac508e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:19:42, skipping insertion in model container [2023-12-02 19:19:42,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:19:42" (3/3) ... [2023-12-02 19:19:42,349 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test22_3-1.i [2023-12-02 19:19:42,369 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:19:42,369 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-12-02 19:19:42,415 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:19:42,420 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;@751bcc68, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:19:42,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-12-02 19:19:42,424 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 27 states have internal predecessors, (32), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 19:19:42,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 19:19:42,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:19:42,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:19:42,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_kobject_putErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-12-02 19:19:42,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:19:42,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1568878959, now seen corresponding path program 1 times [2023-12-02 19:19:42,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:19:42,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820574377] [2023-12-02 19:19:42,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:19:42,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:19:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:19:42,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:19:42,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:19:42,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820574377] [2023-12-02 19:19:42,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820574377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:19:42,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:19:42,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:19:42,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731860334] [2023-12-02 19:19:42,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:19:42,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:19:42,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:19:42,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:19:42,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:19:42,851 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 27 states have internal predecessors, (32), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:19:42,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:19:42,932 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2023-12-02 19:19:42,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:19:42,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-12-02 19:19:42,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:19:42,942 INFO L225 Difference]: With dead ends: 61 [2023-12-02 19:19:42,942 INFO L226 Difference]: Without dead ends: 39 [2023-12-02 19:19:42,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:19:42,952 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:19:42,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 85 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:19:42,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-02 19:19:42,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2023-12-02 19:19:42,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.434782608695652) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:19:42,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2023-12-02 19:19:42,990 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 9 [2023-12-02 19:19:42,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:19:42,991 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2023-12-02 19:19:42,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:19:42,991 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2023-12-02 19:19:42,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 19:19:42,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:19:42,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:19:42,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:19:42,993 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_kobject_putErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_kobject_putErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-12-02 19:19:42,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:19:42,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1307419796, now seen corresponding path program 1 times [2023-12-02 19:19:42,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:19:42,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616157725] [2023-12-02 19:19:42,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:19:42,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:19:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:19:43,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:19:43,196 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:19:43,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616157725] [2023-12-02 19:19:43,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616157725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:19:43,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:19:43,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 19:19:43,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348858809] [2023-12-02 19:19:43,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:19:43,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:19:43,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:19:43,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:19:43,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:19:43,200 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:19:43,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:19:43,327 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2023-12-02 19:19:43,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:19:43,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-12-02 19:19:43,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:19:43,330 INFO L225 Difference]: With dead ends: 54 [2023-12-02 19:19:43,330 INFO L226 Difference]: Without dead ends: 34 [2023-12-02 19:19:43,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:19:43,333 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 12 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:19:43,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 154 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:19:43,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-02 19:19:43,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2023-12-02 19:19:43,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 26 states have internal predecessors, (30), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:19:43,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2023-12-02 19:19:43,339 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 13 [2023-12-02 19:19:43,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:19:43,340 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2023-12-02 19:19:43,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:19:43,340 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2023-12-02 19:19:43,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 19:19:43,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:19:43,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:19:43,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 19:19:43,341 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_kobject_putErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-12-02 19:19:43,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:19:43,342 INFO L85 PathProgramCache]: Analyzing trace with hash 304830820, now seen corresponding path program 1 times [2023-12-02 19:19:43,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:19:43,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694836078] [2023-12-02 19:19:43,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:19:43,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:19:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:19:43,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:19:43,496 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:19:43,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694836078] [2023-12-02 19:19:43,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694836078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:19:43,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:19:43,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:19:43,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789692998] [2023-12-02 19:19:43,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:19:43,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:19:43,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:19:43,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:19:43,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:19:43,499 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:19:43,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:19:43,603 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2023-12-02 19:19:43,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:19:43,604 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-12-02 19:19:43,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:19:43,605 INFO L225 Difference]: With dead ends: 56 [2023-12-02 19:19:43,605 INFO L226 Difference]: Without dead ends: 40 [2023-12-02 19:19:43,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:19:43,607 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 11 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:19:43,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 112 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:19:43,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-02 19:19:43,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2023-12-02 19:19:43,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.375) internal successors, (33), 29 states have internal predecessors, (33), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:19:43,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2023-12-02 19:19:43,614 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 12 [2023-12-02 19:19:43,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:19:43,614 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2023-12-02 19:19:43,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:19:43,615 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2023-12-02 19:19:43,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 19:19:43,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:19:43,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:19:43,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 19:19:43,616 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_kobject_putErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-12-02 19:19:43,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:19:43,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1926378483, now seen corresponding path program 1 times [2023-12-02 19:19:43,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:19:43,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707502739] [2023-12-02 19:19:43,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:19:43,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:19:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:19:43,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:19:43,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:19:43,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707502739] [2023-12-02 19:19:43,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707502739] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:19:43,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:19:43,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:19:43,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612017000] [2023-12-02 19:19:43,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:19:43,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:19:43,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:19:43,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:19:43,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:19:43,718 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:19:43,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:19:43,789 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2023-12-02 19:19:43,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:19:43,790 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-12-02 19:19:43,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:19:43,791 INFO L225 Difference]: With dead ends: 55 [2023-12-02 19:19:43,791 INFO L226 Difference]: Without dead ends: 32 [2023-12-02 19:19:43,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:19:43,793 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 10 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:19:43,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 90 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:19:43,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-02 19:19:43,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-02 19:19:43,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 25 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:19:43,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2023-12-02 19:19:43,799 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 14 [2023-12-02 19:19:43,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:19:43,799 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2023-12-02 19:19:43,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:19:43,800 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2023-12-02 19:19:43,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 19:19:43,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:19:43,801 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:19:43,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 19:19:43,801 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_kobject_putErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-12-02 19:19:43,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:19:43,802 INFO L85 PathProgramCache]: Analyzing trace with hash -102190501, now seen corresponding path program 1 times [2023-12-02 19:19:43,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:19:43,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326458345] [2023-12-02 19:19:43,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:19:43,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:19:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:19:43,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:19:43,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:19:43,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326458345] [2023-12-02 19:19:43,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326458345] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:19:43,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:19:43,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:19:43,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753029246] [2023-12-02 19:19:43,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:19:43,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:19:43,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:19:43,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:19:43,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:19:43,908 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:19:43,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:19:43,938 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2023-12-02 19:19:43,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:19:43,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2023-12-02 19:19:43,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:19:43,939 INFO L225 Difference]: With dead ends: 58 [2023-12-02 19:19:43,939 INFO L226 Difference]: Without dead ends: 33 [2023-12-02 19:19:43,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:19:43,941 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:19:43,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:19:43,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-02 19:19:43,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-12-02 19:19:43,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 26 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:19:43,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2023-12-02 19:19:43,947 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 17 [2023-12-02 19:19:43,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:19:43,947 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2023-12-02 19:19:43,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:19:43,948 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2023-12-02 19:19:43,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 19:19:43,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:19:43,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:19:43,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 19:19:43,949 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_kobject_putErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-12-02 19:19:43,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:19:43,949 INFO L85 PathProgramCache]: Analyzing trace with hash 661288070, now seen corresponding path program 1 times [2023-12-02 19:19:43,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:19:43,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905361549] [2023-12-02 19:19:43,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:19:43,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:19:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:19:44,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:19:44,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:19:44,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905361549] [2023-12-02 19:19:44,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905361549] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:19:44,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534920236] [2023-12-02 19:19:44,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:19:44,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:19:44,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:19:44,099 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:19:44,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 19:19:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:19:44,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 83 conjunts are in the unsatisfiable core [2023-12-02 19:19:44,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:19:44,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-12-02 19:19:44,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 19:19:44,472 WARN L876 $PredicateComparison]: unable to prove that (exists ((LDV_INIT_LIST_HEAD_~list.offset Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (let ((.cse0 (select |c_#memory_int| |c_LDV_INIT_LIST_HEAD_#in~list.base|)) (.cse1 (+ LDV_INIT_LIST_HEAD_~list.offset 4))) (store (store (select |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) LDV_INIT_LIST_HEAD_~list.offset (select .cse0 LDV_INIT_LIST_HEAD_~list.offset)) .cse1 (select .cse0 .cse1))))) (<= LDV_INIT_LIST_HEAD_~list.offset |c_LDV_INIT_LIST_HEAD_#in~list.offset|))) is different from true [2023-12-02 19:19:44,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:19:44,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:19:44,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 11 [2023-12-02 19:19:44,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 19:19:44,598 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:19:44,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534920236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:19:44,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:19:44,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4] total 16 [2023-12-02 19:19:44,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162794926] [2023-12-02 19:19:44,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:19:44,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 19:19:44,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:19:44,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 19:19:44,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=177, Unknown=1, NotChecked=26, Total=240 [2023-12-02 19:19:44,601 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:19:44,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:19:44,918 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2023-12-02 19:19:44,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 19:19:44,919 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-12-02 19:19:44,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:19:44,920 INFO L225 Difference]: With dead ends: 39 [2023-12-02 19:19:44,920 INFO L226 Difference]: Without dead ends: 38 [2023-12-02 19:19:44,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=355, Unknown=1, NotChecked=38, Total=462 [2023-12-02 19:19:44,921 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 24 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:19:44,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 126 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 227 Invalid, 0 Unknown, 51 Unchecked, 0.2s Time] [2023-12-02 19:19:44,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-02 19:19:44,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2023-12-02 19:19:44,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 25 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:19:44,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2023-12-02 19:19:44,928 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 18 [2023-12-02 19:19:44,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:19:44,928 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2023-12-02 19:19:44,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:19:44,929 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2023-12-02 19:19:44,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 19:19:44,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:19:44,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:19:44,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 19:19:45,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 19:19:45,131 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_kobject_putErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-12-02 19:19:45,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:19:45,131 INFO L85 PathProgramCache]: Analyzing trace with hash -974906230, now seen corresponding path program 1 times [2023-12-02 19:19:45,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:19:45,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911673688] [2023-12-02 19:19:45,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:19:45,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:19:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:19:45,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:19:45,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:19:45,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911673688] [2023-12-02 19:19:45,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911673688] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:19:45,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552662393] [2023-12-02 19:19:45,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:19:45,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:19:45,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:19:45,297 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:19:45,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 19:19:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:19:45,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 81 conjunts are in the unsatisfiable core [2023-12-02 19:19:45,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:19:45,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 19:19:45,567 WARN L876 $PredicateComparison]: unable to prove that (exists ((LDV_INIT_LIST_HEAD_~list.offset Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (let ((.cse0 (select |c_#memory_int| |c_LDV_INIT_LIST_HEAD_#in~list.base|)) (.cse1 (+ LDV_INIT_LIST_HEAD_~list.offset 4))) (store (store (select |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) LDV_INIT_LIST_HEAD_~list.offset (select .cse0 LDV_INIT_LIST_HEAD_~list.offset)) .cse1 (select .cse0 .cse1))))) (<= LDV_INIT_LIST_HEAD_~list.offset |c_LDV_INIT_LIST_HEAD_#in~list.offset|))) is different from true [2023-12-02 19:19:45,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:19:45,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:19:45,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 11 [2023-12-02 19:19:45,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 19:19:45,688 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:19:45,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552662393] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:19:45,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:19:45,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4] total 16 [2023-12-02 19:19:45,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291184823] [2023-12-02 19:19:45,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:19:45,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 19:19:45,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:19:45,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 19:19:45,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=177, Unknown=1, NotChecked=26, Total=240 [2023-12-02 19:19:45,690 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 14 states, 10 states have (on average 1.5) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:19:45,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:19:45,915 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2023-12-02 19:19:45,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 19:19:45,918 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 1.5) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2023-12-02 19:19:45,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:19:45,919 INFO L225 Difference]: With dead ends: 38 [2023-12-02 19:19:45,919 INFO L226 Difference]: Without dead ends: 37 [2023-12-02 19:19:45,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=355, Unknown=1, NotChecked=38, Total=462 [2023-12-02 19:19:45,921 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 21 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:19:45,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 99 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 167 Invalid, 0 Unknown, 50 Unchecked, 0.1s Time] [2023-12-02 19:19:45,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-02 19:19:45,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2023-12-02 19:19:45,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 24 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:19:45,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2023-12-02 19:19:45,927 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 19 [2023-12-02 19:19:45,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:19:45,927 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2023-12-02 19:19:45,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 1.5) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:19:45,928 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2023-12-02 19:19:45,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 19:19:45,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:19:45,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:19:45,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 19:19:46,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 19:19:46,129 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_kobject_putErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_kobject_putErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-12-02 19:19:46,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:19:46,130 INFO L85 PathProgramCache]: Analyzing trace with hash -505136381, now seen corresponding path program 1 times [2023-12-02 19:19:46,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:19:46,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734856677] [2023-12-02 19:19:46,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:19:46,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:19:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:19:46,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 19:19:46,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:19:46,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734856677] [2023-12-02 19:19:46,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734856677] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:19:46,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:19:46,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:19:46,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398713133] [2023-12-02 19:19:46,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:19:46,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:19:46,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:19:46,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:19:46,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:19:46,288 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:19:46,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:19:46,350 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2023-12-02 19:19:46,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:19:46,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2023-12-02 19:19:46,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:19:46,352 INFO L225 Difference]: With dead ends: 43 [2023-12-02 19:19:46,352 INFO L226 Difference]: Without dead ends: 31 [2023-12-02 19:19:46,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:19:46,353 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 10 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:19:46,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 74 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:19:46,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-02 19:19:46,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-12-02 19:19:46,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:19:46,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2023-12-02 19:19:46,359 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 22 [2023-12-02 19:19:46,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:19:46,359 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2023-12-02 19:19:46,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:19:46,360 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2023-12-02 19:19:46,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 19:19:46,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:19:46,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:19:46,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 19:19:46,361 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_kobject_putErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_kobject_putErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-12-02 19:19:46,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:19:46,362 INFO L85 PathProgramCache]: Analyzing trace with hash 2136294147, now seen corresponding path program 1 times [2023-12-02 19:19:46,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:19:46,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489183971] [2023-12-02 19:19:46,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:19:46,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:19:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:19:46,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:19:46,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:19:46,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489183971] [2023-12-02 19:19:46,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489183971] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:19:46,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095559883] [2023-12-02 19:19:46,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:19:46,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:19:46,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:19:46,505 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:19:46,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 19:19:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:19:46,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 138 conjunts are in the unsatisfiable core [2023-12-02 19:19:46,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:19:46,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-12-02 19:19:46,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 19:19:46,824 WARN L876 $PredicateComparison]: unable to prove that (exists ((LDV_INIT_LIST_HEAD_~list.offset Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (let ((.cse0 (select |c_#memory_int| |c_LDV_INIT_LIST_HEAD_#in~list.base|)) (.cse1 (+ LDV_INIT_LIST_HEAD_~list.offset 4))) (store (store (select |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) LDV_INIT_LIST_HEAD_~list.offset (select .cse0 LDV_INIT_LIST_HEAD_~list.offset)) .cse1 (select .cse0 .cse1))))) (<= LDV_INIT_LIST_HEAD_~list.offset |c_LDV_INIT_LIST_HEAD_#in~list.offset|))) is different from true [2023-12-02 19:19:46,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:19:46,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:19:46,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 11 [2023-12-02 19:19:46,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2023-12-02 19:19:47,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-02 19:19:47,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:19:47,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:19:47,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095559883] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:19:47,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2053743054] [2023-12-02 19:19:47,626 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-12-02 19:19:47,626 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:19:47,629 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:19:47,635 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:19:47,635 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:19:48,302 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_kobject_put with input of size 60 for LOIs [2023-12-02 19:19:48,388 INFO L197 IcfgInterpreter]: Interpreting procedure LDV_INIT_LIST_HEAD with input of size 58 for LOIs [2023-12-02 19:19:48,395 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 38 for LOIs [2023-12-02 19:19:48,411 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:19:51,985 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1217#(and (exists ((|v_#memory_int_77| (Array Int (Array Int Int)))) (and (= |old(#memory_int)| (store |v_#memory_int_77| |ldv_kobject_put_#in~kobj#1.base| (store (select |v_#memory_int_77| |ldv_kobject_put_#in~kobj#1.base|) (+ |ldv_kobject_put_#in~kobj#1.offset| 12) (+ (select (select |v_#memory_int_77| |ldv_kobject_put_#in~kobj#1.base|) (+ |ldv_kobject_put_#in~kobj#1.offset| 12)) 1)))) (<= 0 (+ 2147483649 (select (select |v_#memory_int_77| |ldv_kobject_put_#in~kobj#1.base|) (+ |ldv_kobject_put_#in~kobj#1.offset| 12)))))) (<= 1 |#StackHeapBarrier|) (= |ldv_kobject_put_ldv_kref_sub_#in~kref#1.base| |ldv_kobject_put_ldv_kref_put_~kref#1.base|) (or (not (= |ldv_kobject_put_~kobj#1.offset| 0)) (not (= |ldv_kobject_put_~kobj#1.base| 0))) (= (+ 12 |ldv_kobject_put_~kobj#1.offset|) |ldv_kobject_put_ldv_kref_put_#in~kref#1.offset|) (<= (+ |ldv_kobject_put_ldv_atomic_sub_return_~temp~1#1| 2147483648) 0) (= |ldv_kobject_put_~kobj#1.base| |ldv_kobject_put_#in~kobj#1.base|) (= |ldv_kobject_put_ldv_kref_put_#in~release#1.offset| |ldv_kobject_put_ldv_kref_put_~release#1.offset|) (exists ((|v_#memory_$Pointer$.offset_59| (Array Int (Array Int Int)))) (= |old(#memory_$Pointer$.offset)| (store |v_#memory_$Pointer$.offset_59| |ldv_kobject_put_#in~kobj#1.base| (store (select |v_#memory_$Pointer$.offset_59| |ldv_kobject_put_#in~kobj#1.base|) (+ |ldv_kobject_put_#in~kobj#1.offset| 12) (select (select |old(#memory_$Pointer$.offset)| |ldv_kobject_put_#in~kobj#1.base|) (+ |ldv_kobject_put_#in~kobj#1.offset| 12)))))) (= |~#ldv_global_msg_list~0.offset| 0) (= |#memory_int| |old(#memory_int)|) (= |ldv_kobject_put_ldv_kref_put_#in~release#1.base| |ldv_kobject_put_ldv_kref_put_~release#1.base|) (= |ldv_kobject_put_#in~kobj#1.offset| |ldv_kobject_put_~kobj#1.offset|) (= |ldv_kobject_put_ldv_atomic_sub_return_~v#1.base| |ldv_kobject_put_ldv_atomic_sub_return_#in~v#1.base|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |ldv_kobject_put_ldv_kref_put_~release#1.offset| |ldv_kobject_put_ldv_kref_sub_#in~release#1.offset|) (= |ldv_kobject_put_ldv_kref_sub_#in~kref#1.base| |ldv_kobject_put_ldv_kref_sub_~kref#1.base|) (= |ldv_kobject_put_ldv_kref_sub_#in~count#1| 1) (= |ldv_kobject_put_ldv_kref_put_~kref#1.offset| |ldv_kobject_put_ldv_kref_sub_#in~kref#1.offset|) (= |ldv_kobject_put_ldv_kref_sub_~release#1.base| |ldv_kobject_put_ldv_kref_sub_#in~release#1.base|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= (select (select |#memory_int| |ldv_kobject_put_ldv_atomic_sub_return_~v#1.base|) |ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset|) |ldv_kobject_put_ldv_atomic_sub_return_~temp~1#1|) (= |ldv_kobject_put_ldv_kref_sub_#in~release#1.base| |ldv_kobject_put_ldv_kref_put_~release#1.base|) (= |ldv_kobject_put_ldv_kref_put_~kref#1.offset| |ldv_kobject_put_ldv_kref_put_#in~kref#1.offset|) (= |ldv_kobject_put_ldv_kref_sub_~release#1.offset| |ldv_kobject_put_ldv_kref_sub_#in~release#1.offset|) (= |ldv_kobject_put_ldv_kref_put_#in~release#1.base| |#funAddr~ldv_kobject_release.base|) (= |ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset| |ldv_kobject_put_ldv_atomic_sub_return_#in~v#1.offset|) (= |ldv_kobject_put_ldv_kref_sub_#in~kref#1.offset| |ldv_kobject_put_ldv_kref_sub_~kref#1.offset|) (= |ldv_kobject_put_ldv_atomic_sub_return_#in~i#1| 1) (= |ldv_kobject_put_ldv_atomic_sub_return_#in~v#1.offset| |ldv_kobject_put_ldv_kref_sub_~kref#1.offset|) (= |~#ldv_global_msg_list~0.base| 1) (= |ldv_kobject_put_ldv_kref_sub_~count#1| 1) (= |ldv_kobject_put_ldv_kref_put_#in~release#1.offset| |#funAddr~ldv_kobject_release.offset|) (= |ldv_kobject_put_ldv_kref_put_#in~kref#1.base| |ldv_kobject_put_ldv_kref_put_~kref#1.base|) (exists ((|v_#memory_$Pointer$.base_59| (Array Int (Array Int Int)))) (= (store |v_#memory_$Pointer$.base_59| |ldv_kobject_put_#in~kobj#1.base| (store (select |v_#memory_$Pointer$.base_59| |ldv_kobject_put_#in~kobj#1.base|) (+ |ldv_kobject_put_#in~kobj#1.offset| 12) (select (select |old(#memory_$Pointer$.base)| |ldv_kobject_put_#in~kobj#1.base|) (+ |ldv_kobject_put_#in~kobj#1.offset| 12)))) |old(#memory_$Pointer$.base)|)) (= |ldv_kobject_put_~kobj#1.base| |ldv_kobject_put_ldv_kref_put_#in~kref#1.base|) (= |old(#valid)| |#valid|) (= |ldv_kobject_put_ldv_atomic_sub_return_~i#1| 1) (= |ldv_kobject_put_ldv_atomic_sub_return_#in~v#1.base| |ldv_kobject_put_ldv_kref_sub_~kref#1.base|))' at error location [2023-12-02 19:19:51,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:19:51,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:19:51,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 19] total 22 [2023-12-02 19:19:51,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580465026] [2023-12-02 19:19:51,986 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:19:51,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 19:19:51,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:19:51,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 19:19:51,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=2579, Unknown=2, NotChecked=102, Total=2862 [2023-12-02 19:19:51,989 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 22 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 19 states have internal predecessors, (37), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 19:19:52,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:19:52,655 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2023-12-02 19:19:52,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-02 19:19:52,656 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 19 states have internal predecessors, (37), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 24 [2023-12-02 19:19:52,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:19:52,656 INFO L225 Difference]: With dead ends: 66 [2023-12-02 19:19:52,656 INFO L226 Difference]: Without dead ends: 41 [2023-12-02 19:19:52,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1019 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=264, Invalid=3898, Unknown=2, NotChecked=126, Total=4290 [2023-12-02 19:19:52,660 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 39 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:19:52,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 118 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 399 Invalid, 0 Unknown, 62 Unchecked, 0.3s Time] [2023-12-02 19:19:52,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-02 19:19:52,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2023-12-02 19:19:52,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 30 states have internal predecessors, (32), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 19:19:52,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2023-12-02 19:19:52,664 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 24 [2023-12-02 19:19:52,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:19:52,664 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2023-12-02 19:19:52,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 19 states have internal predecessors, (37), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 19:19:52,665 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2023-12-02 19:19:52,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 19:19:52,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:19:52,666 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] [2023-12-02 19:19:52,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 19:19:52,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:19:52,866 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_kobject_putErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_kobject_putErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-12-02 19:19:52,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:19:52,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1265730807, now seen corresponding path program 1 times [2023-12-02 19:19:52,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:19:52,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546714016] [2023-12-02 19:19:52,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:19:52,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:19:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:19:53,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:19:53,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:19:53,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546714016] [2023-12-02 19:19:53,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546714016] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:19:53,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123234207] [2023-12-02 19:19:53,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:19:53,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:19:53,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:19:53,060 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:19:53,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 19:19:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:19:53,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 104 conjunts are in the unsatisfiable core [2023-12-02 19:19:53,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:19:53,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 19:19:53,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-12-02 19:19:53,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:19:53,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:19:53,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2023-12-02 19:19:53,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 19:19:53,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123234207] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 19:19:53,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:19:53,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5, 10] total 18 [2023-12-02 19:19:53,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999685071] [2023-12-02 19:19:53,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:19:53,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 19:19:53,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:19:53,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 19:19:53,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-12-02 19:19:53,507 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:19:53,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:19:53,679 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2023-12-02 19:19:53,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 19:19:53,679 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2023-12-02 19:19:53,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:19:53,680 INFO L225 Difference]: With dead ends: 48 [2023-12-02 19:19:53,680 INFO L226 Difference]: Without dead ends: 43 [2023-12-02 19:19:53,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2023-12-02 19:19:53,682 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 13 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:19:53,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 130 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:19:53,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-02 19:19:53,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-12-02 19:19:53,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 32 states have (on average 1.09375) internal successors, (35), 33 states have internal predecessors, (35), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 19:19:53,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2023-12-02 19:19:53,688 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 26 [2023-12-02 19:19:53,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:19:53,688 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2023-12-02 19:19:53,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:19:53,688 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2023-12-02 19:19:53,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 19:19:53,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:19:53,690 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 19:19:53,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 19:19:53,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 19:19:53,895 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_kobject_putErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_kobject_putErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-12-02 19:19:53,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:19:53,896 INFO L85 PathProgramCache]: Analyzing trace with hash -830429747, now seen corresponding path program 1 times [2023-12-02 19:19:53,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:19:53,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641669304] [2023-12-02 19:19:53,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:19:53,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:19:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:19:54,097 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 19:19:54,097 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:19:54,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641669304] [2023-12-02 19:19:54,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641669304] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:19:54,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:19:54,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 19:19:54,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543546208] [2023-12-02 19:19:54,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:19:54,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 19:19:54,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:19:54,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 19:19:54,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:19:54,099 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:19:54,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:19:54,209 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2023-12-02 19:19:54,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:19:54,209 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2023-12-02 19:19:54,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:19:54,210 INFO L225 Difference]: With dead ends: 45 [2023-12-02 19:19:54,210 INFO L226 Difference]: Without dead ends: 36 [2023-12-02 19:19:54,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-02 19:19:54,211 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 17 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:19:54,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 110 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:19:54,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-02 19:19:54,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-12-02 19:19:54,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:19:54,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2023-12-02 19:19:54,218 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 32 [2023-12-02 19:19:54,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:19:54,218 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2023-12-02 19:19:54,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:19:54,219 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2023-12-02 19:19:54,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 19:19:54,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:19:54,220 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 19:19:54,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 19:19:54,220 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_kobject_putErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_kobject_putErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-12-02 19:19:54,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:19:54,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1425262874, now seen corresponding path program 1 times [2023-12-02 19:19:54,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:19:54,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593211909] [2023-12-02 19:19:54,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:19:54,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:19:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:19:54,439 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:19:54,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:19:54,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593211909] [2023-12-02 19:19:54,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593211909] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:19:54,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281308688] [2023-12-02 19:19:54,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:19:54,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:19:54,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:19:54,441 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:19:54,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 19:19:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:19:54,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 193 conjunts are in the unsatisfiable core [2023-12-02 19:19:54,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:19:54,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-12-02 19:19:54,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 19:19:54,775 WARN L876 $PredicateComparison]: unable to prove that (exists ((LDV_INIT_LIST_HEAD_~list.offset Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (let ((.cse0 (select |c_#memory_int| |c_LDV_INIT_LIST_HEAD_#in~list.base|)) (.cse1 (+ LDV_INIT_LIST_HEAD_~list.offset 4))) (store (store (select |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) LDV_INIT_LIST_HEAD_~list.offset (select .cse0 LDV_INIT_LIST_HEAD_~list.offset)) .cse1 (select .cse0 .cse1))))) (<= LDV_INIT_LIST_HEAD_~list.offset |c_LDV_INIT_LIST_HEAD_#in~list.offset|))) is different from true [2023-12-02 19:19:54,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:19:54,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:19:54,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 11 [2023-12-02 19:19:54,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2023-12-02 19:19:55,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-12-02 19:19:55,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-02 19:19:55,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:19:55,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:19:55,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281308688] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:19:55,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1987613359] [2023-12-02 19:19:55,745 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 19:19:55,746 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:19:55,746 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:19:55,746 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:19:55,746 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:19:56,600 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_kobject_put with input of size 9 for LOIs [2023-12-02 19:19:56,770 INFO L197 IcfgInterpreter]: Interpreting procedure LDV_INIT_LIST_HEAD with input of size 58 for LOIs [2023-12-02 19:19:56,778 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 38 for LOIs [2023-12-02 19:19:56,800 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:20:00,277 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1961#(and (<= 1 |#StackHeapBarrier|) (= |ldv_kobject_put_ldv_kref_sub_#in~kref#1.base| |ldv_kobject_put_ldv_kref_put_~kref#1.base|) (or (not (= |ldv_kobject_put_~kobj#1.offset| 0)) (not (= |ldv_kobject_put_~kobj#1.base| 0))) (= (+ 12 |ldv_kobject_put_~kobj#1.offset|) |ldv_kobject_put_ldv_kref_put_#in~kref#1.offset|) (<= (+ |ldv_kobject_put_ldv_atomic_sub_return_~temp~1#1| 2147483648) 0) (= |ldv_kobject_put_~kobj#1.base| |ldv_kobject_put_#in~kobj#1.base|) (= |ldv_kobject_put_ldv_kref_put_#in~release#1.offset| |ldv_kobject_put_ldv_kref_put_~release#1.offset|) (= |~#ldv_global_msg_list~0.offset| 0) (= |ldv_kobject_put_ldv_kref_put_#in~release#1.base| |ldv_kobject_put_ldv_kref_put_~release#1.base|) (= |ldv_kobject_put_#in~kobj#1.offset| |ldv_kobject_put_~kobj#1.offset|) (= |ldv_kobject_put_ldv_atomic_sub_return_~v#1.base| |ldv_kobject_put_ldv_atomic_sub_return_#in~v#1.base|) (= |ldv_kobject_put_ldv_kref_put_~release#1.offset| |ldv_kobject_put_ldv_kref_sub_#in~release#1.offset|) (= |ldv_kobject_put_ldv_kref_sub_#in~kref#1.base| |ldv_kobject_put_ldv_kref_sub_~kref#1.base|) (= |ldv_kobject_put_ldv_kref_sub_#in~count#1| 1) (= |ldv_kobject_put_ldv_kref_put_~kref#1.offset| |ldv_kobject_put_ldv_kref_sub_#in~kref#1.offset|) (= |ldv_kobject_put_ldv_kref_sub_~release#1.base| |ldv_kobject_put_ldv_kref_sub_#in~release#1.base|) (= (select (select |#memory_int| |ldv_kobject_put_ldv_atomic_sub_return_~v#1.base|) |ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset|) |ldv_kobject_put_ldv_atomic_sub_return_~temp~1#1|) (= |ldv_kobject_put_ldv_kref_sub_#in~release#1.base| |ldv_kobject_put_ldv_kref_put_~release#1.base|) (= |ldv_kobject_put_ldv_kref_put_~kref#1.offset| |ldv_kobject_put_ldv_kref_put_#in~kref#1.offset|) (= |ldv_kobject_put_ldv_kref_sub_~release#1.offset| |ldv_kobject_put_ldv_kref_sub_#in~release#1.offset|) (= |ldv_kobject_put_ldv_kref_put_#in~release#1.base| |#funAddr~ldv_kobject_release.base|) (= |ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset| |ldv_kobject_put_ldv_atomic_sub_return_#in~v#1.offset|) (= |ldv_kobject_put_ldv_kref_sub_#in~kref#1.offset| |ldv_kobject_put_ldv_kref_sub_~kref#1.offset|) (= |ldv_kobject_put_ldv_atomic_sub_return_#in~i#1| 1) (= |ldv_kobject_put_ldv_atomic_sub_return_#in~v#1.offset| |ldv_kobject_put_ldv_kref_sub_~kref#1.offset|) (= |~#ldv_global_msg_list~0.base| 1) (= |ldv_kobject_put_ldv_kref_sub_~count#1| 1) (= |ldv_kobject_put_ldv_kref_put_#in~release#1.offset| |#funAddr~ldv_kobject_release.offset|) (= |ldv_kobject_put_ldv_kref_put_#in~kref#1.base| |ldv_kobject_put_ldv_kref_put_~kref#1.base|) (= |ldv_kobject_put_~kobj#1.base| |ldv_kobject_put_ldv_kref_put_#in~kref#1.base|) (= |ldv_kobject_put_ldv_atomic_sub_return_~i#1| 1) (= |ldv_kobject_put_ldv_atomic_sub_return_#in~v#1.base| |ldv_kobject_put_ldv_kref_sub_~kref#1.base|))' at error location [2023-12-02 19:20:00,278 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:20:00,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:20:00,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 25] total 29 [2023-12-02 19:20:00,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40419814] [2023-12-02 19:20:00,278 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:20:00,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-02 19:20:00,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:20:00,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-02 19:20:00,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2995, Unknown=3, NotChecked=110, Total=3306 [2023-12-02 19:20:00,281 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 29 states, 25 states have (on average 2.04) internal successors, (51), 26 states have internal predecessors, (51), 5 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-02 19:20:00,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:00,923 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2023-12-02 19:20:00,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 19:20:00,924 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 2.04) internal successors, (51), 26 states have internal predecessors, (51), 5 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 33 [2023-12-02 19:20:00,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:00,924 INFO L225 Difference]: With dead ends: 63 [2023-12-02 19:20:00,924 INFO L226 Difference]: Without dead ends: 36 [2023-12-02 19:20:00,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=273, Invalid=4150, Unknown=3, NotChecked=130, Total=4556 [2023-12-02 19:20:00,932 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 29 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:00,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 94 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 394 Invalid, 0 Unknown, 57 Unchecked, 0.2s Time] [2023-12-02 19:20:00,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-02 19:20:00,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-12-02 19:20:00,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:20:00,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2023-12-02 19:20:00,938 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 33 [2023-12-02 19:20:00,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:00,938 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2023-12-02 19:20:00,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 2.04) internal successors, (51), 26 states have internal predecessors, (51), 5 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-02 19:20:00,939 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2023-12-02 19:20:00,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 19:20:00,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:00,940 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-02 19:20:00,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 19:20:01,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 19:20:01,141 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_kobject_putErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_kobject_putErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-12-02 19:20:01,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:01,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1393156226, now seen corresponding path program 1 times [2023-12-02 19:20:01,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:20:01,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079121347] [2023-12-02 19:20:01,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:01,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:20:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:01,347 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:20:01,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:20:01,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079121347] [2023-12-02 19:20:01,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079121347] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:20:01,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257237917] [2023-12-02 19:20:01,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:01,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:20:01,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:20:01,349 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:20:01,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 19:20:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:01,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 113 conjunts are in the unsatisfiable core [2023-12-02 19:20:01,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:01,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 19:20:01,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-12-02 19:20:01,682 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 19:20:01,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:20:01,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2023-12-02 19:20:01,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2023-12-02 19:20:01,920 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 19:20:01,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257237917] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:20:01,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [337675308] [2023-12-02 19:20:01,923 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 19:20:01,923 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:20:01,924 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:20:01,924 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:20:01,924 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:20:02,563 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_kobject_put with input of size 9 for LOIs [2023-12-02 19:20:02,724 INFO L197 IcfgInterpreter]: Interpreting procedure LDV_INIT_LIST_HEAD with input of size 58 for LOIs [2023-12-02 19:20:02,730 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 38 for LOIs [2023-12-02 19:20:02,745 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:20:05,919 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2358#(and (<= 1 |#StackHeapBarrier|) (= |ldv_kobject_put_ldv_kref_sub_#in~kref#1.base| |ldv_kobject_put_ldv_kref_put_~kref#1.base|) (or (not (= |ldv_kobject_put_~kobj#1.offset| 0)) (not (= |ldv_kobject_put_~kobj#1.base| 0))) (= (+ 12 |ldv_kobject_put_~kobj#1.offset|) |ldv_kobject_put_ldv_kref_put_#in~kref#1.offset|) (= |ldv_kobject_put_~kobj#1.base| |ldv_kobject_put_#in~kobj#1.base|) (= |ldv_kobject_put_ldv_kref_put_#in~release#1.offset| |ldv_kobject_put_ldv_kref_put_~release#1.offset|) (<= 2147483649 |ldv_kobject_put_ldv_atomic_sub_return_~temp~1#1|) (= |~#ldv_global_msg_list~0.offset| 0) (= |ldv_kobject_put_ldv_kref_put_#in~release#1.base| |ldv_kobject_put_ldv_kref_put_~release#1.base|) (= |ldv_kobject_put_#in~kobj#1.offset| |ldv_kobject_put_~kobj#1.offset|) (= |ldv_kobject_put_ldv_atomic_sub_return_~v#1.base| |ldv_kobject_put_ldv_atomic_sub_return_#in~v#1.base|) (= |ldv_kobject_put_ldv_kref_put_~release#1.offset| |ldv_kobject_put_ldv_kref_sub_#in~release#1.offset|) (= |ldv_kobject_put_ldv_kref_sub_#in~kref#1.base| |ldv_kobject_put_ldv_kref_sub_~kref#1.base|) (= |ldv_kobject_put_ldv_kref_sub_#in~count#1| 1) (= |ldv_kobject_put_ldv_kref_put_~kref#1.offset| |ldv_kobject_put_ldv_kref_sub_#in~kref#1.offset|) (= |ldv_kobject_put_ldv_kref_sub_~release#1.base| |ldv_kobject_put_ldv_kref_sub_#in~release#1.base|) (= (select (select |#memory_int| |ldv_kobject_put_ldv_atomic_sub_return_~v#1.base|) |ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset|) |ldv_kobject_put_ldv_atomic_sub_return_~temp~1#1|) (= |ldv_kobject_put_ldv_kref_sub_#in~release#1.base| |ldv_kobject_put_ldv_kref_put_~release#1.base|) (= |ldv_kobject_put_ldv_kref_put_~kref#1.offset| |ldv_kobject_put_ldv_kref_put_#in~kref#1.offset|) (= |ldv_kobject_put_ldv_kref_sub_~release#1.offset| |ldv_kobject_put_ldv_kref_sub_#in~release#1.offset|) (= |ldv_kobject_put_ldv_kref_put_#in~release#1.base| |#funAddr~ldv_kobject_release.base|) (= |ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset| |ldv_kobject_put_ldv_atomic_sub_return_#in~v#1.offset|) (= |ldv_kobject_put_ldv_kref_sub_#in~kref#1.offset| |ldv_kobject_put_ldv_kref_sub_~kref#1.offset|) (= |ldv_kobject_put_ldv_atomic_sub_return_#in~i#1| 1) (= |ldv_kobject_put_ldv_atomic_sub_return_#in~v#1.offset| |ldv_kobject_put_ldv_kref_sub_~kref#1.offset|) (= |~#ldv_global_msg_list~0.base| 1) (= |ldv_kobject_put_ldv_kref_sub_~count#1| 1) (= |ldv_kobject_put_ldv_kref_put_#in~release#1.offset| |#funAddr~ldv_kobject_release.offset|) (= |ldv_kobject_put_ldv_kref_put_#in~kref#1.base| |ldv_kobject_put_ldv_kref_put_~kref#1.base|) (= |ldv_kobject_put_~kobj#1.base| |ldv_kobject_put_ldv_kref_put_#in~kref#1.base|) (= |ldv_kobject_put_ldv_atomic_sub_return_~i#1| 1) (= |ldv_kobject_put_ldv_atomic_sub_return_#in~v#1.base| |ldv_kobject_put_ldv_kref_sub_~kref#1.base|))' at error location [2023-12-02 19:20:05,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:20:05,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:20:05,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 8] total 19 [2023-12-02 19:20:05,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203937152] [2023-12-02 19:20:05,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:20:05,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-02 19:20:05,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:20:05,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-02 19:20:05,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1652, Unknown=1, NotChecked=0, Total=1806 [2023-12-02 19:20:05,922 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 19 states, 18 states have (on average 3.388888888888889) internal successors, (61), 19 states have internal predecessors, (61), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 19:20:06,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:06,275 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2023-12-02 19:20:06,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 19:20:06,275 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.388888888888889) internal successors, (61), 19 states have internal predecessors, (61), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 35 [2023-12-02 19:20:06,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:06,276 INFO L225 Difference]: With dead ends: 62 [2023-12-02 19:20:06,276 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 19:20:06,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=186, Invalid=1975, Unknown=1, NotChecked=0, Total=2162 [2023-12-02 19:20:06,277 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 19 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:06,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 223 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:20:06,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 19:20:06,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 19:20:06,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2023-12-02 19:20:06,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 19:20:06,279 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2023-12-02 19:20:06,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:06,279 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 19:20:06,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.388888888888889) internal successors, (61), 19 states have internal predecessors, (61), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 19:20:06,279 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 19:20:06,280 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 19:20:06,282 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-12-02 19:20:06,282 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-12-02 19:20:06,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2023-12-02 19:20:06,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2023-12-02 19:20:06,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 19:20:06,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 19:20:06,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 19:20:06,659 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 525 531) the Hoare annotation is: true [2023-12-02 19:20:06,659 INFO L899 garLoopResultBuilder]: For program point ldv_mallocEXIT(lines 525 531) no Hoare annotation was computed. [2023-12-02 19:20:06,659 INFO L899 garLoopResultBuilder]: For program point L659(line 659) no Hoare annotation was computed. [2023-12-02 19:20:06,659 INFO L899 garLoopResultBuilder]: For program point ldv_kobject_create_returnLabel#1(lines 738 747) no Hoare annotation was computed. [2023-12-02 19:20:06,659 INFO L899 garLoopResultBuilder]: For program point L659-1(line 659) no Hoare annotation was computed. [2023-12-02 19:20:06,660 INFO L899 garLoopResultBuilder]: For program point L717(lines 717 718) no Hoare annotation was computed. [2023-12-02 19:20:06,660 INFO L899 garLoopResultBuilder]: For program point L717-2(lines 717 718) no Hoare annotation was computed. [2023-12-02 19:20:06,660 INFO L899 garLoopResultBuilder]: For program point ldv_kobject_init_returnLabel#1(lines 728 737) no Hoare annotation was computed. [2023-12-02 19:20:06,660 INFO L899 garLoopResultBuilder]: For program point L742(lines 742 743) no Hoare annotation was computed. [2023-12-02 19:20:06,660 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 659) no Hoare annotation was computed. [2023-12-02 19:20:06,660 INFO L895 garLoopResultBuilder]: At program point L-1-2(line -1) the Hoare annotation is: (and (= 0 |ULTIMATE.start_ldv_kobject_create_~kobj~1#1.offset|) (not (= |ULTIMATE.start_ldv_kobject_create_~kobj~1#1.base| 0))) [2023-12-02 19:20:06,660 INFO L899 garLoopResultBuilder]: For program point L730(lines 730 732) no Hoare annotation was computed. [2023-12-02 19:20:06,660 INFO L895 garLoopResultBuilder]: At program point L726(line 726) the Hoare annotation is: (and (= 0 |ULTIMATE.start_ldv_kobject_create_~kobj~1#1.offset|) (= |ULTIMATE.start_ldv_kobject_init_~kobj#1.base| |ULTIMATE.start_ldv_kobject_create_~kobj~1#1.base|) (= |ULTIMATE.start_ldv_kobject_create_~kobj~1#1.base| |ULTIMATE.start_ldv_kobject_init_internal_~kobj#1.base|) (= |ULTIMATE.start_ldv_kobject_init_~kobj#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_ldv_kobject_init_internal_~kobj#1.base|) 12) 1) (= |ULTIMATE.start_ldv_kobject_init_internal_~kobj#1.offset| 0) (not (= |ULTIMATE.start_ldv_kobject_init_~kobj#1.base| 0))) [2023-12-02 19:20:06,661 INFO L899 garLoopResultBuilder]: For program point L726-1(lines 721 727) no Hoare annotation was computed. [2023-12-02 19:20:06,661 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 659) no Hoare annotation was computed. [2023-12-02 19:20:06,661 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 19:20:06,661 INFO L895 garLoopResultBuilder]: At program point L768(line 768) the Hoare annotation is: (let ((.cse0 (= 0 |ULTIMATE.start_ldv_kobject_create_#res#1.offset|)) (.cse3 (= |ULTIMATE.start_ldv_kobject_create_#res#1.base| 0)) (.cse2 (= |ULTIMATE.start_entry_point_~kobj~2#1.offset| 0)) (.cse1 (= |ULTIMATE.start_entry_point_~kobj~2#1.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3) (let ((.cse4 (select (select |#memory_int| |ULTIMATE.start_entry_point_~kobj~2#1.base|) 12))) (and (<= 1 .cse4) (or (not .cse0) (not .cse3)) .cse2 (not .cse1) (<= .cse4 2147483647))))) [2023-12-02 19:20:06,661 INFO L899 garLoopResultBuilder]: For program point L768-1(lines 763 769) no Hoare annotation was computed. [2023-12-02 19:20:06,661 INFO L899 garLoopResultBuilder]: For program point L723(lines 723 724) no Hoare annotation was computed. [2023-12-02 19:20:06,661 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 19:20:06,661 INFO L895 garLoopResultBuilder]: At program point L761(line 761) the Hoare annotation is: (let ((.cse0 (= 0 |ULTIMATE.start_ldv_kobject_create_#res#1.offset|)) (.cse5 (= |ULTIMATE.start_entry_point_~kobj~2#1.base| 0)) (.cse2 (= |ULTIMATE.start_entry_point_~kobj~2#1.offset| 0)) (.cse3 (= |ULTIMATE.start_f_22_put_~kobj#1.offset| 0)) (.cse1 (= |ULTIMATE.start_ldv_kobject_create_#res#1.base| 0))) (or (let ((.cse4 (select (select |#memory_int| |ULTIMATE.start_entry_point_~kobj~2#1.base|) 12))) (and (or (not .cse0) (not .cse1)) .cse2 .cse3 (<= .cse4 2147483648) (= |ULTIMATE.start_entry_point_~kobj~2#1.base| |ULTIMATE.start_f_22_put_~kobj#1.base|) (<= 2 .cse4) (not .cse5))) (and (= |ULTIMATE.start_f_22_put_~kobj#1.base| 0) .cse0 .cse5 .cse2 .cse3 .cse1))) [2023-12-02 19:20:06,661 INFO L899 garLoopResultBuilder]: For program point L761-1(lines 760 762) no Hoare annotation was computed. [2023-12-02 19:20:06,662 INFO L902 garLoopResultBuilder]: At program point L741(line 741) the Hoare annotation is: true [2023-12-02 19:20:06,662 INFO L899 garLoopResultBuilder]: For program point L741-1(line 741) no Hoare annotation was computed. [2023-12-02 19:20:06,662 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 538 542) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2023-12-02 19:20:06,662 INFO L899 garLoopResultBuilder]: For program point LDV_INIT_LIST_HEADEXIT(lines 538 542) no Hoare annotation was computed. [2023-12-02 19:20:06,662 INFO L899 garLoopResultBuilder]: For program point L667(line 667) no Hoare annotation was computed. [2023-12-02 19:20:06,662 INFO L899 garLoopResultBuilder]: For program point L667-1(line 667) no Hoare annotation was computed. [2023-12-02 19:20:06,662 INFO L899 garLoopResultBuilder]: For program point ldv_kobject_putErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 667) no Hoare annotation was computed. [2023-12-02 19:20:06,662 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 709 714) the Hoare annotation is: (let ((.cse4 (select |old(#memory_int)| |ldv_kobject_put_#in~kobj#1.base|))) (let ((.cse0 (not (= |ldv_kobject_put_#in~kobj#1.offset| 0))) (.cse3 (select .cse4 (+ |ldv_kobject_put_#in~kobj#1.offset| 12))) (.cse2 (= |#memory_int| |old(#memory_int)|)) (.cse1 (select .cse4 12))) (and (or .cse0 (< .cse1 2) .cse2 (<= 2147483649 .cse3)) (or .cse0 (< 2147483647 .cse3) .cse2 (< .cse1 1))))) [2023-12-02 19:20:06,663 INFO L899 garLoopResultBuilder]: For program point L711(lines 711 713) no Hoare annotation was computed. [2023-12-02 19:20:06,663 INFO L899 garLoopResultBuilder]: For program point L711-2(lines 709 714) no Hoare annotation was computed. [2023-12-02 19:20:06,663 INFO L899 garLoopResultBuilder]: For program point ldv_kobject_putEXIT(lines 709 714) no Hoare annotation was computed. [2023-12-02 19:20:06,663 INFO L899 garLoopResultBuilder]: For program point ldv_kobject_putErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 667) no Hoare annotation was computed. [2023-12-02 19:20:06,666 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:20:06,667 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 19:20:06,676 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~kobj~1 [2023-12-02 19:20:06,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:20:06 BoogieIcfgContainer [2023-12-02 19:20:06,678 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 19:20:06,678 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 19:20:06,679 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 19:20:06,679 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 19:20:06,679 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:19:42" (3/4) ... [2023-12-02 19:20:06,681 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 19:20:06,684 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2023-12-02 19:20:06,685 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure LDV_INIT_LIST_HEAD [2023-12-02 19:20:06,685 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kobject_put [2023-12-02 19:20:06,693 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2023-12-02 19:20:06,694 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-12-02 19:20:06,694 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-12-02 19:20:06,695 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 19:20:06,792 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 19:20:06,793 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 19:20:06,793 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 19:20:06,794 INFO L158 Benchmark]: Toolchain (without parser) took 25520.18ms. Allocated memory was 161.5MB in the beginning and 283.1MB in the end (delta: 121.6MB). Free memory was 115.5MB in the beginning and 138.0MB in the end (delta: -22.5MB). Peak memory consumption was 100.9MB. Max. memory is 16.1GB. [2023-12-02 19:20:06,794 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 77.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:20:06,795 INFO L158 Benchmark]: CACSL2BoogieTranslator took 479.96ms. Allocated memory is still 161.5MB. Free memory was 115.5MB in the beginning and 93.2MB in the end (delta: 22.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 19:20:06,795 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.95ms. Allocated memory is still 161.5MB. Free memory was 93.2MB in the beginning and 90.4MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 19:20:06,795 INFO L158 Benchmark]: Boogie Preprocessor took 34.95ms. Allocated memory is still 161.5MB. Free memory was 90.4MB in the beginning and 88.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 19:20:06,796 INFO L158 Benchmark]: RCFGBuilder took 499.33ms. Allocated memory is still 161.5MB. Free memory was 88.3MB in the beginning and 58.9MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-12-02 19:20:06,796 INFO L158 Benchmark]: TraceAbstraction took 24335.02ms. Allocated memory was 161.5MB in the beginning and 283.1MB in the end (delta: 121.6MB). Free memory was 58.2MB in the beginning and 144.3MB in the end (delta: -86.1MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. [2023-12-02 19:20:06,796 INFO L158 Benchmark]: Witness Printer took 114.96ms. Allocated memory is still 283.1MB. Free memory was 144.3MB in the beginning and 138.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 19:20:06,798 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 77.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 479.96ms. Allocated memory is still 161.5MB. Free memory was 115.5MB in the beginning and 93.2MB in the end (delta: 22.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.95ms. Allocated memory is still 161.5MB. Free memory was 93.2MB in the beginning and 90.4MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.95ms. Allocated memory is still 161.5MB. Free memory was 90.4MB in the beginning and 88.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 499.33ms. Allocated memory is still 161.5MB. Free memory was 88.3MB in the beginning and 58.9MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 24335.02ms. Allocated memory was 161.5MB in the beginning and 283.1MB in the end (delta: 121.6MB). Free memory was 58.2MB in the beginning and 144.3MB in the end (delta: -86.1MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. * Witness Printer took 114.96ms. Allocated memory is still 283.1MB. Free memory was 144.3MB in the beginning and 138.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~kobj~1 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 659]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 659]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 667]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 667]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 34 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 24.3s, OverallIterations: 13, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 217 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 211 mSDsluCounter, 1466 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 220 IncrementalHoareTripleChecker+Unchecked, 1216 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1883 IncrementalHoareTripleChecker+Invalid, 2148 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 250 mSDtfsCounter, 1883 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 443 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 2727 ImplicationChecksByTransitivity, 13.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=10, InterpolantAutomatonStates: 144, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 26 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 33 PreInvPairs, 42 NumberOfFragments, 191 HoareAnnotationTreeSize, 33 FomulaSimplifications, 106 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 146 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 429 NumberOfCodeBlocks, 429 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 469 ConstructedInterpolants, 4 QuantifiedInterpolants, 2184 SizeOfPredicates, 305 NumberOfNonLiveVariables, 1783 ConjunctsInSsa, 712 ConjunctsInUnsatCore, 21 InterpolantComputations, 10 PerfectInterpolantSequences, 29/63 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2023-12-02 19:20:06,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56018c43-0400-4dcd-b188-3611b01c4198/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE