./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test12-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test12-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7f08d75c904d21d6573220c7737d451cd978e8a22a153e855f8d685d88a1eb60 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 01:03:26,402 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 01:03:26,511 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-12 01:03:26,520 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 01:03:26,521 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 01:03:26,565 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 01:03:26,566 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 01:03:26,567 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 01:03:26,568 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 01:03:26,573 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 01:03:26,573 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 01:03:26,574 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 01:03:26,574 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 01:03:26,576 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 01:03:26,576 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 01:03:26,577 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 01:03:26,577 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 01:03:26,578 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 01:03:26,578 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 01:03:26,579 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 01:03:26,579 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 01:03:26,580 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 01:03:26,581 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 01:03:26,582 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 01:03:26,582 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 01:03:26,582 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 01:03:26,583 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 01:03:26,583 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 01:03:26,584 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 01:03:26,584 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 01:03:26,585 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 01:03:26,586 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 01:03:26,586 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 01:03:26,586 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 01:03:26,586 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 01:03:26,587 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 01:03:26,587 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 01:03:26,587 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 01:03:26,587 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:03:26,588 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 01:03:26,588 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 01:03:26,589 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 01:03:26,589 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 01:03:26,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 01:03:26,590 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 01:03:26,590 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 01:03:26,590 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 01:03:26,590 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_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f08d75c904d21d6573220c7737d451cd978e8a22a153e855f8d685d88a1eb60 [2023-11-12 01:03:26,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 01:03:26,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 01:03:26,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 01:03:26,948 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 01:03:26,949 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 01:03:26,951 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/ldv-memsafety/memleaks_test12-2.i [2023-11-12 01:03:30,144 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 01:03:30,500 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 01:03:30,501 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/sv-benchmarks/c/ldv-memsafety/memleaks_test12-2.i [2023-11-12 01:03:30,524 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/data/ce8264941/545c716eddef4d048ba413faa3aedab3/FLAG88f62747c [2023-11-12 01:03:30,540 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/data/ce8264941/545c716eddef4d048ba413faa3aedab3 [2023-11-12 01:03:30,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 01:03:30,544 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 01:03:30,546 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 01:03:30,546 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 01:03:30,552 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 01:03:30,553 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:30" (1/1) ... [2023-11-12 01:03:30,554 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38ed5127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:30, skipping insertion in model container [2023-11-12 01:03:30,554 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:30" (1/1) ... [2023-11-12 01:03:30,630 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:03:31,244 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:03:31,267 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 01:03:31,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:03:31,384 WARN L672 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:03:31,392 INFO L206 MainTranslator]: Completed translation [2023-11-12 01:03:31,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:31 WrapperNode [2023-11-12 01:03:31,393 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:03:31,394 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 01:03:31,394 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 01:03:31,394 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 01:03:31,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:31" (1/1) ... [2023-11-12 01:03:31,431 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:31" (1/1) ... [2023-11-12 01:03:31,484 INFO L138 Inliner]: procedures = 174, calls = 145, calls flagged for inlining = 33, calls inlined = 20, statements flattened = 329 [2023-11-12 01:03:31,484 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 01:03:31,485 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 01:03:31,485 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 01:03:31,485 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 01:03:31,495 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:31" (1/1) ... [2023-11-12 01:03:31,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:31" (1/1) ... [2023-11-12 01:03:31,504 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:31" (1/1) ... [2023-11-12 01:03:31,504 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:31" (1/1) ... [2023-11-12 01:03:31,525 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:31" (1/1) ... [2023-11-12 01:03:31,538 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:31" (1/1) ... [2023-11-12 01:03:31,542 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:31" (1/1) ... [2023-11-12 01:03:31,546 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:31" (1/1) ... [2023-11-12 01:03:31,553 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 01:03:31,555 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 01:03:31,555 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 01:03:31,555 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 01:03:31,556 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:31" (1/1) ... [2023-11-12 01:03:31,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:03:31,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:31,618 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 01:03:31,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 01:03:31,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 01:03:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-12 01:03:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 01:03:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 01:03:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-12 01:03:31,663 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-12 01:03:31,665 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2023-11-12 01:03:31,666 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2023-11-12 01:03:31,666 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-11-12 01:03:31,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-11-12 01:03:31,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 01:03:31,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 01:03:31,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 01:03:31,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 01:03:31,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 01:03:31,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2023-11-12 01:03:31,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2023-11-12 01:03:31,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 01:03:31,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 01:03:31,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 01:03:31,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 01:03:31,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 01:03:31,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 01:03:31,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-12 01:03:31,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 01:03:31,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 01:03:31,946 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 01:03:31,954 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 01:03:32,717 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 01:03:32,930 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 01:03:32,930 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 01:03:32,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:03:32 BoogieIcfgContainer [2023-11-12 01:03:32,934 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 01:03:32,938 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 01:03:32,938 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 01:03:32,943 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 01:03:32,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:03:30" (1/3) ... [2023-11-12 01:03:32,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7450d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:03:32, skipping insertion in model container [2023-11-12 01:03:32,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:31" (2/3) ... [2023-11-12 01:03:32,947 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7450d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:03:32, skipping insertion in model container [2023-11-12 01:03:32,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:03:32" (3/3) ... [2023-11-12 01:03:32,949 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test12-2.i [2023-11-12 01:03:32,975 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 01:03:32,975 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 01:03:33,035 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 01:03:33,041 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;@2b0894b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 01:03:33,042 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 01:03:33,046 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 55 states have (on average 1.4) internal successors, (77), 59 states have internal predecessors, (77), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-12 01:03:33,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-12 01:03:33,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:33,059 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:33,060 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-12 01:03:33,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:33,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1818682611, now seen corresponding path program 1 times [2023-11-12 01:03:33,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:33,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951637137] [2023-11-12 01:03:33,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:33,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:34,170 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-12 01:03:34,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:34,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951637137] [2023-11-12 01:03:34,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951637137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:34,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:34,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 01:03:34,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127519501] [2023-11-12 01:03:34,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:34,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:03:34,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:34,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:03:34,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:34,240 INFO L87 Difference]: Start difference. First operand has 78 states, 55 states have (on average 1.4) internal successors, (77), 59 states have internal predecessors, (77), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-12 01:03:34,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:34,426 INFO L93 Difference]: Finished difference Result 139 states and 185 transitions. [2023-11-12 01:03:34,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:03:34,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 56 [2023-11-12 01:03:34,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:34,438 INFO L225 Difference]: With dead ends: 139 [2023-11-12 01:03:34,439 INFO L226 Difference]: Without dead ends: 54 [2023-11-12 01:03:34,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:34,447 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 2 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:34,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 263 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:34,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-12 01:03:34,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-11-12 01:03:34,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 37 states have internal predecessors, (42), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-12 01:03:34,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2023-11-12 01:03:34,498 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 56 [2023-11-12 01:03:34,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:34,500 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2023-11-12 01:03:34,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-12 01:03:34,501 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2023-11-12 01:03:34,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-12 01:03:34,505 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:34,505 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:34,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 01:03:34,506 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-12 01:03:34,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:34,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1552498467, now seen corresponding path program 1 times [2023-11-12 01:03:34,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:34,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916642881] [2023-11-12 01:03:34,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:34,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:34,812 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-12 01:03:34,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:34,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916642881] [2023-11-12 01:03:34,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916642881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:34,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:34,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 01:03:34,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122202533] [2023-11-12 01:03:34,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:34,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:03:34,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:34,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:03:34,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:34,820 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-12 01:03:34,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:34,950 INFO L93 Difference]: Finished difference Result 103 states and 125 transitions. [2023-11-12 01:03:34,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 01:03:34,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 59 [2023-11-12 01:03:34,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:34,957 INFO L225 Difference]: With dead ends: 103 [2023-11-12 01:03:34,957 INFO L226 Difference]: Without dead ends: 67 [2023-11-12 01:03:34,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:03:34,961 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 11 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:34,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 167 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:34,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-12 01:03:34,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 54. [2023-11-12 01:03:34,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 37 states have internal predecessors, (41), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-12 01:03:34,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2023-11-12 01:03:34,986 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 59 [2023-11-12 01:03:34,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:34,986 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2023-11-12 01:03:34,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-12 01:03:34,988 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2023-11-12 01:03:34,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-12 01:03:34,993 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:34,994 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:34,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 01:03:34,995 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-12 01:03:34,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:34,996 INFO L85 PathProgramCache]: Analyzing trace with hash 419361263, now seen corresponding path program 1 times [2023-11-12 01:03:34,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:35,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895060003] [2023-11-12 01:03:35,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:35,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:35,348 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-12 01:03:35,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:35,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895060003] [2023-11-12 01:03:35,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895060003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:35,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:35,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 01:03:35,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906717570] [2023-11-12 01:03:35,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:35,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:03:35,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:35,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:03:35,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:35,363 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-12 01:03:35,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:35,470 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2023-11-12 01:03:35,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:03:35,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 65 [2023-11-12 01:03:35,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:35,473 INFO L225 Difference]: With dead ends: 89 [2023-11-12 01:03:35,473 INFO L226 Difference]: Without dead ends: 54 [2023-11-12 01:03:35,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:03:35,475 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 1 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:35,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 165 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:35,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-12 01:03:35,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-11-12 01:03:35,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-12 01:03:35,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2023-11-12 01:03:35,489 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 65 [2023-11-12 01:03:35,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:35,490 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2023-11-12 01:03:35,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-12 01:03:35,490 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2023-11-12 01:03:35,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-12 01:03:35,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:35,496 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:35,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 01:03:35,497 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-12 01:03:35,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:35,499 INFO L85 PathProgramCache]: Analyzing trace with hash 2050083858, now seen corresponding path program 1 times [2023-11-12 01:03:35,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:35,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840914760] [2023-11-12 01:03:35,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:35,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:35,849 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-12 01:03:35,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:35,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840914760] [2023-11-12 01:03:35,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840914760] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:35,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:35,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:03:35,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633471959] [2023-11-12 01:03:35,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:35,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:03:35,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:35,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:03:35,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:35,856 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-12 01:03:35,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:35,965 INFO L93 Difference]: Finished difference Result 77 states and 92 transitions. [2023-11-12 01:03:35,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:03:35,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 69 [2023-11-12 01:03:35,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:35,969 INFO L225 Difference]: With dead ends: 77 [2023-11-12 01:03:35,971 INFO L226 Difference]: Without dead ends: 75 [2023-11-12 01:03:35,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:03:35,975 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 3 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:35,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 153 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:35,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-12 01:03:35,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-11-12 01:03:35,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 53 states have internal predecessors, (56), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-12 01:03:35,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2023-11-12 01:03:35,994 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 69 [2023-11-12 01:03:35,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:35,997 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2023-11-12 01:03:35,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-12 01:03:35,997 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2023-11-12 01:03:36,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-12 01:03:36,005 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:36,005 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:36,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 01:03:36,006 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-12 01:03:36,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:36,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1494646105, now seen corresponding path program 1 times [2023-11-12 01:03:36,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:36,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133691212] [2023-11-12 01:03:36,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:36,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:36,570 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-12 01:03:36,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:36,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133691212] [2023-11-12 01:03:36,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133691212] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:03:36,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040369318] [2023-11-12 01:03:36,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:36,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:36,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:36,580 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:03:36,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 01:03:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:37,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 01:03:37,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:37,270 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-12 01:03:37,270 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:37,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040369318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:37,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 01:03:37,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-12 01:03:37,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000079891] [2023-11-12 01:03:37,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:37,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 01:03:37,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:37,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 01:03:37,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-12 01:03:37,276 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-12 01:03:37,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:37,427 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2023-11-12 01:03:37,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 01:03:37,428 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 102 [2023-11-12 01:03:37,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:37,433 INFO L225 Difference]: With dead ends: 75 [2023-11-12 01:03:37,434 INFO L226 Difference]: Without dead ends: 74 [2023-11-12 01:03:37,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-12 01:03:37,437 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 8 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:37,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 254 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:37,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-12 01:03:37,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-11-12 01:03:37,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 states have internal predecessors, (55), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-12 01:03:37,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 89 transitions. [2023-11-12 01:03:37,468 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 89 transitions. Word has length 102 [2023-11-12 01:03:37,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:37,470 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 89 transitions. [2023-11-12 01:03:37,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-12 01:03:37,470 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 89 transitions. [2023-11-12 01:03:37,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-12 01:03:37,475 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:37,476 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:37,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 01:03:37,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:37,698 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-12 01:03:37,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:37,698 INFO L85 PathProgramCache]: Analyzing trace with hash 910611171, now seen corresponding path program 1 times [2023-11-12 01:03:37,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:37,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292570922] [2023-11-12 01:03:37,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:37,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:38,125 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-12 01:03:38,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:38,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292570922] [2023-11-12 01:03:38,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292570922] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:03:38,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057160970] [2023-11-12 01:03:38,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:38,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:38,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:38,128 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:03:38,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 01:03:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:38,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 1049 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 01:03:38,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:38,769 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-12 01:03:38,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:03:38,974 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-12 01:03:38,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057160970] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 01:03:38,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [913088050] [2023-11-12 01:03:38,999 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2023-11-12 01:03:38,999 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 01:03:39,004 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 01:03:39,010 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 01:03:39,011 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 01:03:41,127 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memcpy with input of size 28 for LOIs [2023-11-12 01:03:41,133 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 45 for LOIs [2023-11-12 01:03:41,164 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 01:03:42,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [913088050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:42,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-12 01:03:42,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [5, 5, 5] total 27 [2023-11-12 01:03:42,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661838177] [2023-11-12 01:03:42,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:42,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-12 01:03:42,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:42,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-12 01:03:42,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2023-11-12 01:03:42,907 INFO L87 Difference]: Start difference. First operand 74 states and 89 transitions. Second operand has 17 states, 9 states have (on average 4.111111111111111) internal successors, (37), 13 states have internal predecessors, (37), 8 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 8 states have call successors, (12) [2023-11-12 01:03:45,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:45,876 INFO L93 Difference]: Finished difference Result 134 states and 157 transitions. [2023-11-12 01:03:45,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-12 01:03:45,888 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 9 states have (on average 4.111111111111111) internal successors, (37), 13 states have internal predecessors, (37), 8 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 8 states have call successors, (12) Word has length 103 [2023-11-12 01:03:45,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:45,890 INFO L225 Difference]: With dead ends: 134 [2023-11-12 01:03:45,890 INFO L226 Difference]: Without dead ends: 80 [2023-11-12 01:03:45,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=115, Invalid=876, Unknown=1, NotChecked=0, Total=992 [2023-11-12 01:03:45,894 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 34 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:45,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 225 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 513 Invalid, 2 Unknown, 0 Unchecked, 1.9s Time] [2023-11-12 01:03:45,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-12 01:03:45,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-11-12 01:03:45,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 55 states have internal predecessors, (59), 17 states have call successors, (17), 7 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-12 01:03:45,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 93 transitions. [2023-11-12 01:03:45,930 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 93 transitions. Word has length 103 [2023-11-12 01:03:45,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:45,931 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 93 transitions. [2023-11-12 01:03:45,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 9 states have (on average 4.111111111111111) internal successors, (37), 13 states have internal predecessors, (37), 8 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 8 states have call successors, (12) [2023-11-12 01:03:45,932 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 93 transitions. [2023-11-12 01:03:45,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-12 01:03:45,933 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:45,933 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:45,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-12 01:03:46,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-12 01:03:46,145 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-12 01:03:46,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:46,145 INFO L85 PathProgramCache]: Analyzing trace with hash 632440325, now seen corresponding path program 1 times [2023-11-12 01:03:46,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:46,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415131070] [2023-11-12 01:03:46,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:46,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:46,599 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-11-12 01:03:46,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:46,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415131070] [2023-11-12 01:03:46,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415131070] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:03:46,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652331422] [2023-11-12 01:03:46,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:46,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:46,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:46,602 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:03:46,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 01:03:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:47,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 01:03:47,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:47,121 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-11-12 01:03:47,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:03:47,322 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-11-12 01:03:47,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652331422] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 01:03:47,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [174863883] [2023-11-12 01:03:47,328 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2023-11-12 01:03:47,329 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 01:03:47,329 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 01:03:47,330 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 01:03:47,330 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 01:03:48,710 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memcpy with input of size 28 for LOIs [2023-11-12 01:03:48,789 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 45 for LOIs [2023-11-12 01:03:48,829 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 01:03:50,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [174863883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:50,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-12 01:03:50,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [5, 5, 5] total 28 [2023-11-12 01:03:50,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623736040] [2023-11-12 01:03:50,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:50,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-12 01:03:50,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:50,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-12 01:03:50,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=663, Unknown=1, NotChecked=0, Total=756 [2023-11-12 01:03:50,554 INFO L87 Difference]: Start difference. First operand 80 states and 93 transitions. Second operand has 18 states, 10 states have (on average 3.8) internal successors, (38), 14 states have internal predecessors, (38), 8 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 8 states have call successors, (12) [2023-11-12 01:03:53,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:53,770 INFO L93 Difference]: Finished difference Result 138 states and 162 transitions. [2023-11-12 01:03:53,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-12 01:03:53,776 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 10 states have (on average 3.8) internal successors, (38), 14 states have internal predecessors, (38), 8 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 8 states have call successors, (12) Word has length 104 [2023-11-12 01:03:53,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:53,781 INFO L225 Difference]: With dead ends: 138 [2023-11-12 01:03:53,782 INFO L226 Difference]: Without dead ends: 84 [2023-11-12 01:03:53,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=123, Invalid=997, Unknown=2, NotChecked=0, Total=1122 [2023-11-12 01:03:53,787 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 81 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 16 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:53,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 245 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 584 Invalid, 5 Unknown, 0 Unchecked, 2.1s Time] [2023-11-12 01:03:53,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-11-12 01:03:53,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-11-12 01:03:53,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 59 states have internal predecessors, (64), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-12 01:03:53,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 98 transitions. [2023-11-12 01:03:53,811 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 98 transitions. Word has length 104 [2023-11-12 01:03:53,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:53,811 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 98 transitions. [2023-11-12 01:03:53,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 10 states have (on average 3.8) internal successors, (38), 14 states have internal predecessors, (38), 8 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 8 states have call successors, (12) [2023-11-12 01:03:53,812 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 98 transitions. [2023-11-12 01:03:53,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-12 01:03:53,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:53,814 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:53,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 01:03:54,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:54,025 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-12 01:03:54,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:54,025 INFO L85 PathProgramCache]: Analyzing trace with hash -846323679, now seen corresponding path program 1 times [2023-11-12 01:03:54,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:54,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795704903] [2023-11-12 01:03:54,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:54,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:54,422 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 01:03:54,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:54,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795704903] [2023-11-12 01:03:54,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795704903] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:03:54,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334698841] [2023-11-12 01:03:54,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:54,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:54,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:54,424 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:03:54,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d83bdbb4-1ff6-4400-9419-b8dc6eb2e056/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 01:03:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:54,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 01:03:54,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:54,974 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 01:03:54,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:03:55,122 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 01:03:55,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334698841] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 01:03:55,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [685721474] [2023-11-12 01:03:55,126 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2023-11-12 01:03:55,126 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 01:03:55,127 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 01:03:55,127 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 01:03:55,128 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 01:04:08,457 INFO L197 IcfgInterpreter]: Interpreting procedure __ldv_list_add with input of size 65 for LOIs [2023-11-12 01:04:08,475 INFO L197 IcfgInterpreter]: Interpreting procedure LDV_INIT_LIST_HEAD with input of size 48 for LOIs [2023-11-12 01:04:08,482 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memcpy with input of size 9 for LOIs [2023-11-12 01:04:08,675 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 43 for LOIs [2023-11-12 01:04:08,697 INFO L180 IcfgInterpreter]: Interpretation finished