./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ --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 a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:57:34,632 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:57:34,711 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 04:57:34,717 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:57:34,718 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:57:34,745 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:57:34,745 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:57:34,746 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:57:34,749 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:57:34,753 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:57:34,754 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:57:34,755 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:57:34,756 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:57:34,757 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:57:34,758 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:57:34,758 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:57:34,758 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:57:34,759 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:57:34,759 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:57:34,760 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:57:34,761 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:57:34,762 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:57:34,763 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:57:34,764 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:57:34,764 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:57:34,765 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:57:34,765 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:57:34,765 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:57:34,766 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:57:34,766 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:57:34,767 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:57:34,768 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:57:34,768 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:57:34,768 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:57:34,769 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:57:34,769 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:57:34,769 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:57:34,769 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:57:34,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:57:34,770 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:57:34,770 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:57:34,771 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:57:34,771 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:57:34,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:57:34,772 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:57:34,772 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:57:34,772 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:57:34,773 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_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 [2023-11-19 04:57:35,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:57:35,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:57:35,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:57:35,074 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:57:35,075 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:57:35,076 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2023-11-19 04:57:38,286 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:57:38,656 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:57:38,657 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51492133-8e81-444a-8d4b-1403a6abf6d1/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2023-11-19 04:57:38,685 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ/data/5937bcf66/6de406259d7a43ebaf8784d76d327dea/FLAG793cfca0e [2023-11-19 04:57:38,704 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ/data/5937bcf66/6de406259d7a43ebaf8784d76d327dea [2023-11-19 04:57:38,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:57:38,712 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:57:38,717 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:57:38,718 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:57:38,723 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:57:38,724 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:57:38" (1/1) ... [2023-11-19 04:57:38,725 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9ac21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:38, skipping insertion in model container [2023-11-19 04:57:38,725 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:57:38" (1/1) ... [2023-11-19 04:57:38,816 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:57:39,389 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:57:39,410 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:57:39,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:57:39,570 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:57:39,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:39 WrapperNode [2023-11-19 04:57:39,571 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:57:39,572 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:57:39,572 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:57:39,572 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:57:39,580 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:39" (1/1) ... [2023-11-19 04:57:39,625 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:39" (1/1) ... [2023-11-19 04:57:39,696 INFO L138 Inliner]: procedures = 177, calls = 187, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 802 [2023-11-19 04:57:39,697 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:57:39,697 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:57:39,698 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:57:39,698 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:57:39,708 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:39" (1/1) ... [2023-11-19 04:57:39,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:39" (1/1) ... [2023-11-19 04:57:39,720 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:39" (1/1) ... [2023-11-19 04:57:39,720 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:39" (1/1) ... [2023-11-19 04:57:39,760 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:39" (1/1) ... [2023-11-19 04:57:39,771 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:39" (1/1) ... [2023-11-19 04:57:39,776 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:39" (1/1) ... [2023-11-19 04:57:39,781 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:39" (1/1) ... [2023-11-19 04:57:39,790 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:57:39,796 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:57:39,796 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:57:39,796 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:57:39,797 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:39" (1/1) ... [2023-11-19 04:57:39,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:57:39,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:57:39,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:57:39,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:57:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:57:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 04:57:39,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 04:57:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:57:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 04:57:39,877 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 04:57:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:57:39,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:57:39,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:57:39,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:57:39,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:57:39,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:57:39,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:57:39,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:57:39,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:57:40,113 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:57:40,115 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:57:41,390 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:57:42,283 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:57:42,284 INFO L302 CfgBuilder]: Removed 31 assume(true) statements. [2023-11-19 04:57:42,291 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:57:42 BoogieIcfgContainer [2023-11-19 04:57:42,292 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:57:42,295 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:57:42,296 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:57:42,300 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:57:42,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:57:38" (1/3) ... [2023-11-19 04:57:42,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60dba0d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:57:42, skipping insertion in model container [2023-11-19 04:57:42,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:39" (2/3) ... [2023-11-19 04:57:42,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60dba0d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:57:42, skipping insertion in model container [2023-11-19 04:57:42,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:57:42" (3/3) ... [2023-11-19 04:57:42,305 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test1-1.i [2023-11-19 04:57:42,325 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:57:42,325 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 04:57:42,397 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:57:42,405 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;@3bb8bde3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:57:42,405 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-19 04:57:42,411 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 71 states have (on average 1.7605633802816902) internal successors, (125), 87 states have internal predecessors, (125), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 04:57:42,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:57:42,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:57:42,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 04:57:42,418 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 04:57:42,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:57:42,426 INFO L85 PathProgramCache]: Analyzing trace with hash 892175, now seen corresponding path program 1 times [2023-11-19 04:57:42,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:57:42,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914309729] [2023-11-19 04:57:42,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:57:42,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:57:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:57:42,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:57:42,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:57:42,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914309729] [2023-11-19 04:57:42,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914309729] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:57:42,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:57:42,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:57:42,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74695213] [2023-11-19 04:57:42,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:57:42,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:57:42,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:57:42,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:57:42,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:57:42,720 INFO L87 Difference]: Start difference. First operand has 93 states, 71 states have (on average 1.7605633802816902) internal successors, (125), 87 states have internal predecessors, (125), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:57:44,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:57:46,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:57:47,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:57:47,136 INFO L93 Difference]: Finished difference Result 184 states and 301 transitions. [2023-11-19 04:57:47,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:57:47,142 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 04:57:47,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:57:47,151 INFO L225 Difference]: With dead ends: 184 [2023-11-19 04:57:47,152 INFO L226 Difference]: Without dead ends: 91 [2023-11-19 04:57:47,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:57:47,159 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:57:47,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2023-11-19 04:57:47,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-19 04:57:47,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-11-19 04:57:47,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 71 states have (on average 1.3098591549295775) internal successors, (93), 85 states have internal predecessors, (93), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 04:57:47,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 119 transitions. [2023-11-19 04:57:47,207 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 119 transitions. Word has length 3 [2023-11-19 04:57:47,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:57:47,207 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 119 transitions. [2023-11-19 04:57:47,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:57:47,208 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 119 transitions. [2023-11-19 04:57:47,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 04:57:47,208 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:57:47,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 04:57:47,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:57:47,209 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 04:57:47,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:57:47,210 INFO L85 PathProgramCache]: Analyzing trace with hash 27869841, now seen corresponding path program 1 times [2023-11-19 04:57:47,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:57:47,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434595028] [2023-11-19 04:57:47,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:57:47,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:57:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:57:47,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:57:47,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:57:47,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434595028] [2023-11-19 04:57:47,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434595028] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:57:47,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:57:47,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:57:47,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471264551] [2023-11-19 04:57:47,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:57:47,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:57:47,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:57:47,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:57:47,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:57:47,302 INFO L87 Difference]: Start difference. First operand 91 states and 119 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:57:49,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:57:51,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:57:53,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:57:55,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:57:57,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:57:59,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:58:00,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:00,210 INFO L93 Difference]: Finished difference Result 237 states and 303 transitions. [2023-11-19 04:58:00,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:58:00,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 04:58:00,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:00,218 INFO L225 Difference]: With dead ends: 237 [2023-11-19 04:58:00,218 INFO L226 Difference]: Without dead ends: 146 [2023-11-19 04:58:00,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:00,221 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 56 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:00,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 198 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 5 Unknown, 0 Unchecked, 12.9s Time] [2023-11-19 04:58:00,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-11-19 04:58:00,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 98. [2023-11-19 04:58:00,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 78 states have (on average 1.2820512820512822) internal successors, (100), 92 states have internal predecessors, (100), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 04:58:00,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 126 transitions. [2023-11-19 04:58:00,244 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 126 transitions. Word has length 4 [2023-11-19 04:58:00,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:00,245 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 126 transitions. [2023-11-19 04:58:00,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:00,245 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 126 transitions. [2023-11-19 04:58:00,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 04:58:00,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:00,247 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:58:00,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:58:00,248 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 04:58:00,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:00,252 INFO L85 PathProgramCache]: Analyzing trace with hash -264025952, now seen corresponding path program 1 times [2023-11-19 04:58:00,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:58:00,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179924361] [2023-11-19 04:58:00,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:00,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:58:00,349 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:58:00,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [570268568] [2023-11-19 04:58:00,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:00,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:58:00,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:58:00,354 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:58:00,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:58:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:00,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:58:00,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:00,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:00,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:58:00,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:58:00,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179924361] [2023-11-19 04:58:00,858 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:58:00,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570268568] [2023-11-19 04:58:00,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570268568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:58:00,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:58:00,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:58:00,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824469548] [2023-11-19 04:58:00,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:58:00,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:58:00,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:58:00,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:58:00,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:58:00,863 INFO L87 Difference]: Start difference. First operand 98 states and 126 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:02,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:58:04,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:58:07,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:58:09,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:58:10,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:10,204 INFO L93 Difference]: Finished difference Result 98 states and 126 transitions. [2023-11-19 04:58:10,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:58:10,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-11-19 04:58:10,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:10,210 INFO L225 Difference]: With dead ends: 98 [2023-11-19 04:58:10,210 INFO L226 Difference]: Without dead ends: 97 [2023-11-19 04:58:10,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:58:10,212 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 60 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:10,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 205 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 4 Unknown, 0 Unchecked, 9.3s Time] [2023-11-19 04:58:10,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-11-19 04:58:10,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-11-19 04:58:10,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 78 states have (on average 1.2692307692307692) internal successors, (99), 91 states have internal predecessors, (99), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 04:58:10,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 125 transitions. [2023-11-19 04:58:10,234 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 125 transitions. Word has length 31 [2023-11-19 04:58:10,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:10,234 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 125 transitions. [2023-11-19 04:58:10,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:10,235 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 125 transitions. [2023-11-19 04:58:10,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 04:58:10,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:10,237 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:58:10,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:58:10,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:58:10,453 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 04:58:10,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:10,454 INFO L85 PathProgramCache]: Analyzing trace with hash 405130845, now seen corresponding path program 1 times [2023-11-19 04:58:10,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:58:10,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507912722] [2023-11-19 04:58:10,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:10,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:58:10,531 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:58:10,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2050482705] [2023-11-19 04:58:10,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:10,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:58:10,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:58:10,533 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:58:10,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:58:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:10,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:58:10,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:10,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:10,919 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:58:10,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:58:10,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507912722] [2023-11-19 04:58:10,920 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:58:10,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050482705] [2023-11-19 04:58:10,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050482705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:58:10,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:58:10,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:58:10,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142623039] [2023-11-19 04:58:10,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:58:10,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:58:10,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:58:10,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:58:10,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:58:10,923 INFO L87 Difference]: Start difference. First operand 97 states and 125 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:12,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:58:14,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:58:17,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:58:19,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:58:20,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:58:21,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:21,227 INFO L93 Difference]: Finished difference Result 230 states and 294 transitions. [2023-11-19 04:58:21,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:58:21,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-11-19 04:58:21,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:21,233 INFO L225 Difference]: With dead ends: 230 [2023-11-19 04:58:21,233 INFO L226 Difference]: Without dead ends: 140 [2023-11-19 04:58:21,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:58:21,234 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 25 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:21,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 300 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 3 Unknown, 0 Unchecked, 10.3s Time] [2023-11-19 04:58:21,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-19 04:58:21,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2023-11-19 04:58:21,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 118 states have (on average 1.2033898305084745) internal successors, (142), 131 states have internal predecessors, (142), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 04:58:21,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 174 transitions. [2023-11-19 04:58:21,252 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 174 transitions. Word has length 32 [2023-11-19 04:58:21,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:21,253 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 174 transitions. [2023-11-19 04:58:21,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:21,253 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 174 transitions. [2023-11-19 04:58:21,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-19 04:58:21,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:21,255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:58:21,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:58:21,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:58:21,468 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 04:58:21,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:21,468 INFO L85 PathProgramCache]: Analyzing trace with hash 395989367, now seen corresponding path program 1 times [2023-11-19 04:58:21,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:58:21,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713972996] [2023-11-19 04:58:21,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:21,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:58:21,564 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:58:21,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597026505] [2023-11-19 04:58:21,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:21,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:58:21,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:58:21,566 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:58:21,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51492133-8e81-444a-8d4b-1403a6abf6d1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:58:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:21,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:58:21,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:21,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:21,949 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:58:22,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:22,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:58:22,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713972996] [2023-11-19 04:58:22,023 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:58:22,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597026505] [2023-11-19 04:58:22,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597026505] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:58:22,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [795529088] [2023-11-19 04:58:22,049 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2023-11-19 04:58:22,050 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:58:22,053 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:58:22,058 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:58:22,059 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:58:28,295 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:58:41,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [795529088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:58:41,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:58:41,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4] total 15 [2023-11-19 04:58:41,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140040163] [2023-11-19 04:58:41,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:58:41,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 04:58:41,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:58:41,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 04:58:41,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=149, Unknown=6, NotChecked=0, Total=240 [2023-11-19 04:58:41,890 INFO L87 Difference]: Start difference. First operand 140 states and 174 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:43,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]