./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-multidimensional/init-4-n-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/init-4-n-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91 --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 7e1c46a3eec085decec4254bf9381483b25ba7b6541d5728ae52d1793b9b8c91 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:02:05,550 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:02:05,653 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-25 00:02:05,658 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:02:05,659 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:02:05,684 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:02:05,685 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:02:05,686 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:02:05,686 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:02:05,687 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:02:05,687 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:02:05,688 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:02:05,689 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:02:05,689 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:02:05,690 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:02:05,690 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:02:05,691 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:02:05,691 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:02:05,692 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:02:05,692 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:02:05,693 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:02:05,693 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:02:05,694 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:02:05,695 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:02:05,695 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:02:05,695 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:02:05,696 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:02:05,696 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:02:05,697 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:02:05,697 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:02:05,697 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:02:05,698 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-25 00:02:05,705 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-25 00:02:05,705 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:02:05,705 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:02:05,705 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:02:05,706 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:02:05,706 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:02:05,706 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:02:05,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:02:05,707 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:02:05,708 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:02:05,708 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:02:05,709 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:02:05,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:02:05,709 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:02:05,709 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:02:05,709 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:02:05,709 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:02:05,710 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_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e1c46a3eec085decec4254bf9381483b25ba7b6541d5728ae52d1793b9b8c91 [2023-11-25 00:02:06,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:02:06,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:02:06,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:02:06,072 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:02:06,073 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:02:06,074 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/array-multidimensional/init-4-n-u.c [2023-11-25 00:02:09,225 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:02:09,457 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:02:09,457 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/sv-benchmarks/c/array-multidimensional/init-4-n-u.c [2023-11-25 00:02:09,466 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/data/2a4630641/45cf2eaa2133480893e6b587e87c60fa/FLAGc8f3c08ed [2023-11-25 00:02:09,491 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/data/2a4630641/45cf2eaa2133480893e6b587e87c60fa [2023-11-25 00:02:09,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:02:09,505 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:02:09,510 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:02:09,510 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:02:09,517 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:02:09,517 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:02:09" (1/1) ... [2023-11-25 00:02:09,519 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@407936dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:09, skipping insertion in model container [2023-11-25 00:02:09,519 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:02:09" (1/1) ... [2023-11-25 00:02:09,548 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:02:09,787 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:02:09,802 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:02:09,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:02:09,863 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:02:09,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:09 WrapperNode [2023-11-25 00:02:09,864 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:02:09,865 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:02:09,865 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:02:09,865 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:02:09,873 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:09" (1/1) ... [2023-11-25 00:02:09,890 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:09" (1/1) ... [2023-11-25 00:02:09,924 INFO L138 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 115 [2023-11-25 00:02:09,924 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:02:09,925 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:02:09,925 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:02:09,925 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:02:09,934 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:09" (1/1) ... [2023-11-25 00:02:09,935 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:09" (1/1) ... [2023-11-25 00:02:09,940 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:09" (1/1) ... [2023-11-25 00:02:09,940 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:09" (1/1) ... [2023-11-25 00:02:09,954 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:09" (1/1) ... [2023-11-25 00:02:09,958 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:09" (1/1) ... [2023-11-25 00:02:09,960 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:09" (1/1) ... [2023-11-25 00:02:09,961 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:09" (1/1) ... [2023-11-25 00:02:09,963 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:02:09,970 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:02:09,971 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:02:09,971 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:02:09,972 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:09" (1/1) ... [2023-11-25 00:02:09,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:02:09,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:10,044 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:02:10,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:02:10,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:02:10,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:02:10,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:02:10,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-25 00:02:10,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:02:10,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:02:10,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-25 00:02:10,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:02:10,198 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:02:10,201 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:02:10,561 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:02:10,621 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:02:10,621 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-25 00:02:10,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:02:10 BoogieIcfgContainer [2023-11-25 00:02:10,623 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:02:10,626 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:02:10,626 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:02:10,629 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:02:10,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:02:09" (1/3) ... [2023-11-25 00:02:10,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45bc22c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:02:10, skipping insertion in model container [2023-11-25 00:02:10,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:09" (2/3) ... [2023-11-25 00:02:10,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45bc22c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:02:10, skipping insertion in model container [2023-11-25 00:02:10,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:02:10" (3/3) ... [2023-11-25 00:02:10,633 INFO L112 eAbstractionObserver]: Analyzing ICFG init-4-n-u.c [2023-11-25 00:02:10,652 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:02:10,652 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-25 00:02:10,700 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:02:10,708 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;@3dca7772, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:02:10,708 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-25 00:02:10,712 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 25 states have (on average 1.96) internal successors, (49), 41 states have internal predecessors, (49), 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) [2023-11-25 00:02:10,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-25 00:02:10,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:10,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-25 00:02:10,720 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-25 00:02:10,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:10,725 INFO L85 PathProgramCache]: Analyzing trace with hash 5467313, now seen corresponding path program 1 times [2023-11-25 00:02:10,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:10,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094806553] [2023-11-25 00:02:10,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:10,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:10,819 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:02:10,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1991309645] [2023-11-25 00:02:10,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:10,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:10,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:10,831 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:02:10,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:02:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:10,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-25 00:02:10,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:02:10,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:02:10,992 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:02:10,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:10,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094806553] [2023-11-25 00:02:10,994 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:02:10,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991309645] [2023-11-25 00:02:10,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991309645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:02:10,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:02:10,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-25 00:02:10,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226281055] [2023-11-25 00:02:10,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:02:11,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:02:11,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:11,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:02:11,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:02:11,048 INFO L87 Difference]: Start difference. First operand has 42 states, 25 states have (on average 1.96) internal successors, (49), 41 states have internal predecessors, (49), 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) Second operand has 3 states, 2 states have (on average 2.0) 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) [2023-11-25 00:02:11,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:11,116 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2023-11-25 00:02:11,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:02:11,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) 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 [2023-11-25 00:02:11,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:11,127 INFO L225 Difference]: With dead ends: 42 [2023-11-25 00:02:11,128 INFO L226 Difference]: Without dead ends: 39 [2023-11-25 00:02:11,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:02:11,134 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:11,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 28 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-25 00:02:11,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-25 00:02:11,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-11-25 00:02:11,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.84) internal successors, (46), 38 states have internal predecessors, (46), 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) [2023-11-25 00:02:11,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2023-11-25 00:02:11,173 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 4 [2023-11-25 00:02:11,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:11,174 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2023-11-25 00:02:11,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) 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) [2023-11-25 00:02:11,174 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2023-11-25 00:02:11,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-25 00:02:11,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:11,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-25 00:02:11,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-25 00:02:11,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:11,382 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-25 00:02:11,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:11,383 INFO L85 PathProgramCache]: Analyzing trace with hash 169356370, now seen corresponding path program 1 times [2023-11-25 00:02:11,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:11,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516493034] [2023-11-25 00:02:11,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:11,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:11,393 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:02:11,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1654591118] [2023-11-25 00:02:11,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:11,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:11,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:11,396 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:02:11,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-25 00:02:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:11,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-25 00:02:11,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:02:11,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:02:11,473 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:02:11,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:11,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516493034] [2023-11-25 00:02:11,474 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:02:11,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654591118] [2023-11-25 00:02:11,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654591118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:02:11,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:02:11,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:02:11,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960855591] [2023-11-25 00:02:11,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:02:11,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:02:11,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:11,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:02:11,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:02:11,477 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-25 00:02:11,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:11,515 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2023-11-25 00:02:11,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:02:11,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-11-25 00:02:11,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:11,517 INFO L225 Difference]: With dead ends: 39 [2023-11-25 00:02:11,518 INFO L226 Difference]: Without dead ends: 37 [2023-11-25 00:02:11,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:02:11,520 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:11,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 26 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-25 00:02:11,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-25 00:02:11,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-11-25 00:02:11,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 25 states have (on average 1.76) internal successors, (44), 36 states have internal predecessors, (44), 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) [2023-11-25 00:02:11,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2023-11-25 00:02:11,528 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 5 [2023-11-25 00:02:11,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:11,529 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2023-11-25 00:02:11,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-25 00:02:11,529 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2023-11-25 00:02:11,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-25 00:02:11,530 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:11,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-25 00:02:11,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-25 00:02:11,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:11,736 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-25 00:02:11,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:11,737 INFO L85 PathProgramCache]: Analyzing trace with hash 169486796, now seen corresponding path program 1 times [2023-11-25 00:02:11,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:11,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159470016] [2023-11-25 00:02:11,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:11,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:11,750 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:02:11,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347920027] [2023-11-25 00:02:11,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:11,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:11,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:11,755 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:02:11,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-25 00:02:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:11,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-25 00:02:11,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:02:11,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:02:11,833 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:02:11,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:11,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159470016] [2023-11-25 00:02:11,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:02:11,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347920027] [2023-11-25 00:02:11,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347920027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:02:11,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:02:11,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-25 00:02:11,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968136515] [2023-11-25 00:02:11,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:02:11,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:02:11,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:11,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:02:11,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:02:11,838 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-25 00:02:11,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:11,913 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2023-11-25 00:02:11,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:02:11,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-25 00:02:11,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:11,915 INFO L225 Difference]: With dead ends: 73 [2023-11-25 00:02:11,916 INFO L226 Difference]: Without dead ends: 71 [2023-11-25 00:02:11,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:02:11,918 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 35 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:11,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 54 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:02:11,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-25 00:02:11,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2023-11-25 00:02:11,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 49 states have (on average 1.7346938775510203) internal successors, (85), 60 states have internal predecessors, (85), 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) [2023-11-25 00:02:11,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 85 transitions. [2023-11-25 00:02:11,931 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 85 transitions. Word has length 5 [2023-11-25 00:02:11,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:11,932 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 85 transitions. [2023-11-25 00:02:11,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-25 00:02:11,932 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 85 transitions. [2023-11-25 00:02:11,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-25 00:02:11,933 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:11,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-25 00:02:11,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-25 00:02:12,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:12,141 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-25 00:02:12,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:12,142 INFO L85 PathProgramCache]: Analyzing trace with hash 955080260, now seen corresponding path program 1 times [2023-11-25 00:02:12,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:12,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394764131] [2023-11-25 00:02:12,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:12,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:12,149 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:02:12,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1997144284] [2023-11-25 00:02:12,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:12,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:12,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:12,151 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:02:12,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-25 00:02:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:12,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-25 00:02:12,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:02:12,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:02:12,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:02:12,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:12,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394764131] [2023-11-25 00:02:12,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:02:12,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997144284] [2023-11-25 00:02:12,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997144284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:02:12,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:02:12,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:02:12,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562862866] [2023-11-25 00:02:12,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:02:12,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:02:12,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:12,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:02:12,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:02:12,253 INFO L87 Difference]: Start difference. First operand 61 states and 85 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-25 00:02:12,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:12,340 INFO L93 Difference]: Finished difference Result 119 states and 166 transitions. [2023-11-25 00:02:12,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:02:12,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2023-11-25 00:02:12,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:12,342 INFO L225 Difference]: With dead ends: 119 [2023-11-25 00:02:12,343 INFO L226 Difference]: Without dead ends: 117 [2023-11-25 00:02:12,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:02:12,345 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 33 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:12,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 52 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:02:12,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-25 00:02:12,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 97. [2023-11-25 00:02:12,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 85 states have (on average 1.7529411764705882) internal successors, (149), 96 states have internal predecessors, (149), 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) [2023-11-25 00:02:12,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 149 transitions. [2023-11-25 00:02:12,367 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 149 transitions. Word has length 6 [2023-11-25 00:02:12,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:12,367 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 149 transitions. [2023-11-25 00:02:12,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-25 00:02:12,368 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 149 transitions. [2023-11-25 00:02:12,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-25 00:02:12,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:12,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-25 00:02:12,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-25 00:02:12,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:12,577 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-25 00:02:12,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:12,578 INFO L85 PathProgramCache]: Analyzing trace with hash 954954918, now seen corresponding path program 1 times [2023-11-25 00:02:12,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:12,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220556567] [2023-11-25 00:02:12,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:12,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:12,588 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:02:12,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1992740827] [2023-11-25 00:02:12,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:12,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:12,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:12,590 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:02:12,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-25 00:02:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:12,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-25 00:02:12,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:02:12,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:02:12,664 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:02:12,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:12,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220556567] [2023-11-25 00:02:12,665 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:02:12,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992740827] [2023-11-25 00:02:12,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992740827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:02:12,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:02:12,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:02:12,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104616313] [2023-11-25 00:02:12,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:02:12,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:02:12,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:12,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:02:12,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:02:12,668 INFO L87 Difference]: Start difference. First operand 97 states and 149 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-25 00:02:12,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:12,718 INFO L93 Difference]: Finished difference Result 97 states and 149 transitions. [2023-11-25 00:02:12,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:02:12,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2023-11-25 00:02:12,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:12,722 INFO L225 Difference]: With dead ends: 97 [2023-11-25 00:02:12,722 INFO L226 Difference]: Without dead ends: 95 [2023-11-25 00:02:12,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:02:12,724 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:12,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 24 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-25 00:02:12,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-25 00:02:12,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-11-25 00:02:12,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 85 states have (on average 1.6588235294117648) internal successors, (141), 94 states have internal predecessors, (141), 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) [2023-11-25 00:02:12,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 141 transitions. [2023-11-25 00:02:12,745 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 141 transitions. Word has length 6 [2023-11-25 00:02:12,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:12,745 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 141 transitions. [2023-11-25 00:02:12,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-25 00:02:12,746 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 141 transitions. [2023-11-25 00:02:12,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-25 00:02:12,747 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:12,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-25 00:02:12,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-25 00:02:12,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:12,954 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-25 00:02:12,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:12,954 INFO L85 PathProgramCache]: Analyzing trace with hash 954950974, now seen corresponding path program 1 times [2023-11-25 00:02:12,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:12,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784650561] [2023-11-25 00:02:12,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:12,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:12,962 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:02:12,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1170535874] [2023-11-25 00:02:12,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:12,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:12,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:12,964 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:02:12,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-25 00:02:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:13,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-25 00:02:13,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:02:13,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:02:13,025 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:02:13,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:13,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784650561] [2023-11-25 00:02:13,026 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:02:13,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170535874] [2023-11-25 00:02:13,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170535874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:02:13,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:02:13,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:02:13,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345303938] [2023-11-25 00:02:13,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:02:13,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:02:13,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:13,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:02:13,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:02:13,029 INFO L87 Difference]: Start difference. First operand 95 states and 141 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-25 00:02:13,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:13,082 INFO L93 Difference]: Finished difference Result 95 states and 141 transitions. [2023-11-25 00:02:13,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:02:13,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2023-11-25 00:02:13,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:13,084 INFO L225 Difference]: With dead ends: 95 [2023-11-25 00:02:13,084 INFO L226 Difference]: Without dead ends: 93 [2023-11-25 00:02:13,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:02:13,086 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:13,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 24 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-25 00:02:13,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-25 00:02:13,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-11-25 00:02:13,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 85 states have (on average 1.5647058823529412) internal successors, (133), 92 states have internal predecessors, (133), 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) [2023-11-25 00:02:13,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 133 transitions. [2023-11-25 00:02:13,104 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 133 transitions. Word has length 6 [2023-11-25 00:02:13,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:13,104 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 133 transitions. [2023-11-25 00:02:13,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-25 00:02:13,104 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 133 transitions. [2023-11-25 00:02:13,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-25 00:02:13,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:13,105 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:02:13,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-25 00:02:13,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-25 00:02:13,312 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-25 00:02:13,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:13,312 INFO L85 PathProgramCache]: Analyzing trace with hash -461168535, now seen corresponding path program 1 times [2023-11-25 00:02:13,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:13,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381915083] [2023-11-25 00:02:13,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:13,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:13,322 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:02:13,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [178826047] [2023-11-25 00:02:13,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:13,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:13,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:13,330 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:02:13,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-25 00:02:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:13,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-25 00:02:13,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:02:13,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:02:13,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:02:13,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:13,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381915083] [2023-11-25 00:02:13,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:02:13,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178826047] [2023-11-25 00:02:13,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178826047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:02:13,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:02:13,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:02:13,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804018468] [2023-11-25 00:02:13,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:02:13,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:02:13,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:13,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:02:13,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:02:13,399 INFO L87 Difference]: Start difference. First operand 93 states and 133 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-25 00:02:13,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:13,481 INFO L93 Difference]: Finished difference Result 179 states and 254 transitions. [2023-11-25 00:02:13,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:02:13,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-11-25 00:02:13,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:13,484 INFO L225 Difference]: With dead ends: 179 [2023-11-25 00:02:13,484 INFO L226 Difference]: Without dead ends: 177 [2023-11-25 00:02:13,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:02:13,486 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 27 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:13,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 42 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:02:13,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-11-25 00:02:13,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 141. [2023-11-25 00:02:13,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 133 states have (on average 1.5413533834586466) internal successors, (205), 140 states have internal predecessors, (205), 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) [2023-11-25 00:02:13,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 205 transitions. [2023-11-25 00:02:13,509 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 205 transitions. Word has length 7 [2023-11-25 00:02:13,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:13,510 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 205 transitions. [2023-11-25 00:02:13,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-25 00:02:13,510 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 205 transitions. [2023-11-25 00:02:13,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-25 00:02:13,511 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:13,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:02:13,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-25 00:02:13,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:13,716 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-25 00:02:13,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:13,717 INFO L85 PathProgramCache]: Analyzing trace with hash -461290806, now seen corresponding path program 1 times [2023-11-25 00:02:13,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:13,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818657844] [2023-11-25 00:02:13,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:13,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:13,724 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:02:13,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846297082] [2023-11-25 00:02:13,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:13,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:13,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:13,726 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:02:13,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-25 00:02:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:13,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-25 00:02:13,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:02:13,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:02:13,806 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:02:13,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:13,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818657844] [2023-11-25 00:02:13,807 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:02:13,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846297082] [2023-11-25 00:02:13,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846297082] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:02:13,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:02:13,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:02:13,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729008017] [2023-11-25 00:02:13,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:02:13,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:02:13,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:13,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:02:13,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:02:13,809 INFO L87 Difference]: Start difference. First operand 141 states and 205 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-25 00:02:13,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:13,895 INFO L93 Difference]: Finished difference Result 267 states and 382 transitions. [2023-11-25 00:02:13,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:02:13,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-11-25 00:02:13,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:13,898 INFO L225 Difference]: With dead ends: 267 [2023-11-25 00:02:13,898 INFO L226 Difference]: Without dead ends: 265 [2023-11-25 00:02:13,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:02:13,899 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 26 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:13,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 44 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:02:13,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-11-25 00:02:13,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 189. [2023-11-25 00:02:13,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 181 states have (on average 1.4861878453038675) internal successors, (269), 188 states have internal predecessors, (269), 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) [2023-11-25 00:02:13,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 269 transitions. [2023-11-25 00:02:13,932 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 269 transitions. Word has length 7 [2023-11-25 00:02:13,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:13,932 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 269 transitions. [2023-11-25 00:02:13,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-25 00:02:13,932 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 269 transitions. [2023-11-25 00:02:13,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-25 00:02:13,933 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:13,934 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1] [2023-11-25 00:02:13,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-25 00:02:14,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:14,135 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-25 00:02:14,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:14,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1171400734, now seen corresponding path program 1 times [2023-11-25 00:02:14,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:14,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469914238] [2023-11-25 00:02:14,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:14,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:14,141 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:02:14,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [149001803] [2023-11-25 00:02:14,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:14,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:14,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:14,143 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:02:14,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-25 00:02:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:14,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:02:14,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:02:14,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:02:14,256 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:02:14,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:14,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469914238] [2023-11-25 00:02:14,256 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:02:14,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149001803] [2023-11-25 00:02:14,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149001803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:02:14,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:02:14,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:02:14,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519446218] [2023-11-25 00:02:14,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:02:14,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:02:14,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:14,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:02:14,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:02:14,260 INFO L87 Difference]: Start difference. First operand 189 states and 269 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-25 00:02:14,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:14,371 INFO L93 Difference]: Finished difference Result 338 states and 472 transitions. [2023-11-25 00:02:14,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:02:14,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 9 [2023-11-25 00:02:14,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:14,373 INFO L225 Difference]: With dead ends: 338 [2023-11-25 00:02:14,374 INFO L226 Difference]: Without dead ends: 193 [2023-11-25 00:02:14,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:02:14,384 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 62 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:14,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 44 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:02:14,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-25 00:02:14,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2023-11-25 00:02:14,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 181 states have (on average 1.4640883977900552) internal successors, (265), 188 states have internal predecessors, (265), 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) [2023-11-25 00:02:14,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 265 transitions. [2023-11-25 00:02:14,439 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 265 transitions. Word has length 9 [2023-11-25 00:02:14,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:14,442 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 265 transitions. [2023-11-25 00:02:14,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-25 00:02:14,443 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 265 transitions. [2023-11-25 00:02:14,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-25 00:02:14,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:14,448 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2023-11-25 00:02:14,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-25 00:02:14,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:14,654 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-25 00:02:14,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:14,655 INFO L85 PathProgramCache]: Analyzing trace with hash 719730133, now seen corresponding path program 1 times [2023-11-25 00:02:14,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:14,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749245654] [2023-11-25 00:02:14,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:14,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:14,677 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:02:14,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1086738642] [2023-11-25 00:02:14,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:14,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:14,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:14,690 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:02:14,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-25 00:02:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:14,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:02:14,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:02:14,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:02:14,797 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:02:14,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:14,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749245654] [2023-11-25 00:02:14,797 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:02:14,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086738642] [2023-11-25 00:02:14,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086738642] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:02:14,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:02:14,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:02:14,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699613327] [2023-11-25 00:02:14,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:02:14,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:02:14,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:14,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:02:14,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:02:14,801 INFO L87 Difference]: Start difference. First operand 189 states and 265 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-25 00:02:14,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:14,891 INFO L93 Difference]: Finished difference Result 359 states and 499 transitions. [2023-11-25 00:02:14,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:02:14,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-25 00:02:14,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:14,893 INFO L225 Difference]: With dead ends: 359 [2023-11-25 00:02:14,893 INFO L226 Difference]: Without dead ends: 191 [2023-11-25 00:02:14,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:02:14,899 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 50 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:14,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 42 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:02:14,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-11-25 00:02:14,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 189. [2023-11-25 00:02:14,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 181 states have (on average 1.419889502762431) internal successors, (257), 188 states have internal predecessors, (257), 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) [2023-11-25 00:02:14,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 257 transitions. [2023-11-25 00:02:14,927 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 257 transitions. Word has length 10 [2023-11-25 00:02:14,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:14,928 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 257 transitions. [2023-11-25 00:02:14,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-25 00:02:14,928 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 257 transitions. [2023-11-25 00:02:14,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-25 00:02:14,928 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:14,929 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-25 00:02:14,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-25 00:02:15,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-25 00:02:15,133 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-25 00:02:15,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:15,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1581013244, now seen corresponding path program 1 times [2023-11-25 00:02:15,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:15,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659975317] [2023-11-25 00:02:15,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:15,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:15,142 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:02:15,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638460720] [2023-11-25 00:02:15,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:15,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:15,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:15,144 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:02:15,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-25 00:02:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:15,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:02:15,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:02:15,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:02:15,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:02:15,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:02:15,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:15,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659975317] [2023-11-25 00:02:15,250 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:02:15,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638460720] [2023-11-25 00:02:15,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638460720] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:02:15,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1965460592] [2023-11-25 00:02:15,270 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-25 00:02:15,270 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:02:15,273 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:02:15,279 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:02:15,279 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:02:16,212 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:02:16,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1965460592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:02:16,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:02:16,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 8 [2023-11-25 00:02:16,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688926372] [2023-11-25 00:02:16,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:02:16,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:02:16,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:16,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:02:16,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-25 00:02:16,639 INFO L87 Difference]: Start difference. First operand 189 states and 257 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-11-25 00:02:16,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:16,940 INFO L93 Difference]: Finished difference Result 368 states and 500 transitions. [2023-11-25 00:02:16,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-25 00:02:16,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-25 00:02:16,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:16,943 INFO L225 Difference]: With dead ends: 368 [2023-11-25 00:02:16,943 INFO L226 Difference]: Without dead ends: 189 [2023-11-25 00:02:16,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-25 00:02:16,946 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:16,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 23 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:02:16,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-25 00:02:16,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 187. [2023-11-25 00:02:16,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 179 states have (on average 1.4078212290502794) internal successors, (252), 186 states have internal predecessors, (252), 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) [2023-11-25 00:02:16,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 252 transitions. [2023-11-25 00:02:16,967 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 252 transitions. Word has length 10 [2023-11-25 00:02:16,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:16,967 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 252 transitions. [2023-11-25 00:02:16,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-11-25 00:02:16,968 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 252 transitions. [2023-11-25 00:02:16,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-25 00:02:16,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:16,969 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:02:16,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-25 00:02:17,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:17,174 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-25 00:02:17,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:17,175 INFO L85 PathProgramCache]: Analyzing trace with hash 282667173, now seen corresponding path program 1 times [2023-11-25 00:02:17,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:17,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777881391] [2023-11-25 00:02:17,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:17,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:17,183 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:02:17,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [536412300] [2023-11-25 00:02:17,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:17,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:17,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:17,184 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:02:17,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-25 00:02:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:17,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:02:17,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:02:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:02:17,278 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:02:17,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:02:17,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:17,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777881391] [2023-11-25 00:02:17,307 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:02:17,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536412300] [2023-11-25 00:02:17,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536412300] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:02:17,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [407182235] [2023-11-25 00:02:17,310 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-25 00:02:17,310 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:02:17,310 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:02:17,310 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:02:17,311 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:02:17,970 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:02:18,511 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4660#(and (<= |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~l~0#1|) (<= 2147483647 |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~l~0#1|))' at error location [2023-11-25 00:02:18,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-25 00:02:18,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:02:18,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-25 00:02:18,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128990161] [2023-11-25 00:02:18,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-25 00:02:18,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-25 00:02:18,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:18,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-25 00:02:18,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-11-25 00:02:18,513 INFO L87 Difference]: Start difference. First operand 187 states and 252 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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) [2023-11-25 00:02:18,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:18,676 INFO L93 Difference]: Finished difference Result 482 states and 687 transitions. [2023-11-25 00:02:18,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-25 00:02:18,676 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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 14 [2023-11-25 00:02:18,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:18,678 INFO L225 Difference]: With dead ends: 482 [2023-11-25 00:02:18,679 INFO L226 Difference]: Without dead ends: 303 [2023-11-25 00:02:18,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-25 00:02:18,680 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 110 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:18,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 60 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:02:18,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-11-25 00:02:18,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 301. [2023-11-25 00:02:18,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 293 states have (on average 1.2491467576791808) internal successors, (366), 300 states have internal predecessors, (366), 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) [2023-11-25 00:02:18,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 366 transitions. [2023-11-25 00:02:18,713 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 366 transitions. Word has length 14 [2023-11-25 00:02:18,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:18,714 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 366 transitions. [2023-11-25 00:02:18,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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) [2023-11-25 00:02:18,714 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 366 transitions. [2023-11-25 00:02:18,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-25 00:02:18,715 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:18,715 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:02:18,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-25 00:02:18,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:18,921 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-25 00:02:18,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:18,921 INFO L85 PathProgramCache]: Analyzing trace with hash 965848724, now seen corresponding path program 1 times [2023-11-25 00:02:18,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:18,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935925306] [2023-11-25 00:02:18,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:18,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:18,932 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:02:18,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1492937888] [2023-11-25 00:02:18,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:18,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:18,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:18,934 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:02:18,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-25 00:02:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:19,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-25 00:02:19,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:02:19,110 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 40 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-25 00:02:19,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:02:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 40 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-25 00:02:19,191 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:19,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935925306] [2023-11-25 00:02:19,191 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:02:19,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492937888] [2023-11-25 00:02:19,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492937888] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:02:19,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1153771667] [2023-11-25 00:02:19,196 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-25 00:02:19,196 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:02:19,197 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:02:19,197 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:02:19,197 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:02:19,803 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:02:20,313 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5907#(and (exists ((|v_#memory_int_34| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_34| |ULTIMATE.start_main_~#A~0#1.base| (store (select |v_#memory_int_34| |ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~l~0#1| 4) (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| (* |ULTIMATE.start_main_~q~0#1| 4)))) (* |ULTIMATE.start_main_~k~0#1| (* |ULTIMATE.start_main_~q~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| (* |ULTIMATE.start_main_~q~0#1| 4)))) |ULTIMATE.start_main_~C~0#1|)))) (<= 2147483647 |ULTIMATE.start_main_~l~0#1|) (<= (+ |ULTIMATE.start_main_~l~0#1| 1) |ULTIMATE.start_main_~q~0#1|))' at error location [2023-11-25 00:02:20,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-25 00:02:20,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:02:20,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-25 00:02:20,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164175795] [2023-11-25 00:02:20,314 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-25 00:02:20,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-25 00:02:20,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:20,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-25 00:02:20,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2023-11-25 00:02:20,316 INFO L87 Difference]: Start difference. First operand 301 states and 366 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 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) [2023-11-25 00:02:20,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:20,669 INFO L93 Difference]: Finished difference Result 881 states and 1188 transitions. [2023-11-25 00:02:20,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-25 00:02:20,670 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 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 29 [2023-11-25 00:02:20,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:20,674 INFO L225 Difference]: With dead ends: 881 [2023-11-25 00:02:20,674 INFO L226 Difference]: Without dead ends: 597 [2023-11-25 00:02:20,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=196, Invalid=454, Unknown=0, NotChecked=0, Total=650 [2023-11-25 00:02:20,676 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 136 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:20,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 60 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-25 00:02:20,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2023-11-25 00:02:20,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 589. [2023-11-25 00:02:20,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 581 states have (on average 1.2030981067125646) internal successors, (699), 588 states have internal predecessors, (699), 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) [2023-11-25 00:02:20,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 699 transitions. [2023-11-25 00:02:20,730 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 699 transitions. Word has length 29 [2023-11-25 00:02:20,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:20,730 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 699 transitions. [2023-11-25 00:02:20,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 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) [2023-11-25 00:02:20,731 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 699 transitions. [2023-11-25 00:02:20,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-25 00:02:20,734 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:20,734 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:02:20,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-25 00:02:20,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:20,940 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-25 00:02:20,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:20,940 INFO L85 PathProgramCache]: Analyzing trace with hash 934925682, now seen corresponding path program 2 times [2023-11-25 00:02:20,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:20,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869360303] [2023-11-25 00:02:20,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:20,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:20,966 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:02:20,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511108283] [2023-11-25 00:02:20,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-25 00:02:20,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:20,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:20,969 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:02:20,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-25 00:02:21,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-25 00:02:21,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:02:21,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:02:21,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:02:21,141 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2023-11-25 00:02:21,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:02:21,249 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2023-11-25 00:02:21,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:21,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869360303] [2023-11-25 00:02:21,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:02:21,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511108283] [2023-11-25 00:02:21,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511108283] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:02:21,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2060832564] [2023-11-25 00:02:21,257 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-25 00:02:21,258 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:02:21,258 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:02:21,258 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:02:21,259 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:02:21,884 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:02:22,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2060832564] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:02:22,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:02:22,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [2, 2] total 11 [2023-11-25 00:02:22,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806196146] [2023-11-25 00:02:22,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:02:22,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-25 00:02:22,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:22,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-25 00:02:22,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-25 00:02:22,429 INFO L87 Difference]: Start difference. First operand 589 states and 699 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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) [2023-11-25 00:02:22,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:22,916 INFO L93 Difference]: Finished difference Result 591 states and 699 transitions. [2023-11-25 00:02:22,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-25 00:02:22,916 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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 56 [2023-11-25 00:02:22,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:22,922 INFO L225 Difference]: With dead ends: 591 [2023-11-25 00:02:22,923 INFO L226 Difference]: Without dead ends: 590 [2023-11-25 00:02:22,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2023-11-25 00:02:22,924 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:22,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 33 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 153 Invalid, 2 Unknown, 0 Unchecked, 0.3s Time] [2023-11-25 00:02:22,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2023-11-25 00:02:22,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 589. [2023-11-25 00:02:22,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 581 states have (on average 1.1944922547332186) internal successors, (694), 588 states have internal predecessors, (694), 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) [2023-11-25 00:02:22,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 694 transitions. [2023-11-25 00:02:22,990 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 694 transitions. Word has length 56 [2023-11-25 00:02:22,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:22,991 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 694 transitions. [2023-11-25 00:02:22,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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) [2023-11-25 00:02:22,991 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 694 transitions. [2023-11-25 00:02:22,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-25 00:02:22,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:22,992 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:02:22,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-25 00:02:23,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-25 00:02:23,198 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-25 00:02:23,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:23,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1716879363, now seen corresponding path program 1 times [2023-11-25 00:02:23,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:23,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031785946] [2023-11-25 00:02:23,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:23,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:23,220 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:02:23,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1164620646] [2023-11-25 00:02:23,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:23,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:23,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:23,222 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:02:23,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-25 00:02:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:23,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-25 00:02:23,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:02:23,589 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 189 proven. 145 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-25 00:02:23,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:02:23,949 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 189 proven. 145 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-25 00:02:23,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:23,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031785946] [2023-11-25 00:02:23,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:02:23,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164620646] [2023-11-25 00:02:23,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164620646] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:02:23,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1548131211] [2023-11-25 00:02:23,952 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-11-25 00:02:23,952 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:02:23,952 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:02:23,952 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:02:23,952 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:02:24,871 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:02:25,202 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10217#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (exists ((|v_#memory_int_78| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_78| |ULTIMATE.start_main_~#A~0#1.base| (store (select |v_#memory_int_78| |ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~l~0#1| 4) (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| (* |ULTIMATE.start_main_~q~0#1| 4)))) (* |ULTIMATE.start_main_~k~0#1| (* |ULTIMATE.start_main_~q~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| (* |ULTIMATE.start_main_~q~0#1| 4)))) |ULTIMATE.start_main_~C~0#1|)))) (<= 2147483647 |ULTIMATE.start_main_~l~0#1|) (<= (+ |ULTIMATE.start_main_~l~0#1| 1) |ULTIMATE.start_main_~q~0#1|))' at error location [2023-11-25 00:02:25,202 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-25 00:02:25,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:02:25,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-11-25 00:02:25,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400917482] [2023-11-25 00:02:25,203 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-25 00:02:25,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-25 00:02:25,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:25,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-25 00:02:25,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=890, Unknown=0, NotChecked=0, Total=1260 [2023-11-25 00:02:25,205 INFO L87 Difference]: Start difference. First operand 589 states and 694 transitions. Second operand has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 25 states have internal predecessors, (81), 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) [2023-11-25 00:02:25,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:25,935 INFO L93 Difference]: Finished difference Result 1739 states and 2288 transitions. [2023-11-25 00:02:25,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-25 00:02:25,936 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 25 states have internal predecessors, (81), 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 60 [2023-11-25 00:02:25,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:25,943 INFO L225 Difference]: With dead ends: 1739 [2023-11-25 00:02:25,943 INFO L226 Difference]: Without dead ends: 1185 [2023-11-25 00:02:25,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=668, Invalid=1494, Unknown=0, NotChecked=0, Total=2162 [2023-11-25 00:02:25,946 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 280 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:25,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 114 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-25 00:02:25,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2023-11-25 00:02:26,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1165. [2023-11-25 00:02:26,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 1157 states have (on average 1.1702679343128781) internal successors, (1354), 1164 states have internal predecessors, (1354), 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) [2023-11-25 00:02:26,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1354 transitions. [2023-11-25 00:02:26,056 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1354 transitions. Word has length 60 [2023-11-25 00:02:26,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:26,058 INFO L495 AbstractCegarLoop]: Abstraction has 1165 states and 1354 transitions. [2023-11-25 00:02:26,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 25 states have internal predecessors, (81), 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) [2023-11-25 00:02:26,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1354 transitions. [2023-11-25 00:02:26,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-25 00:02:26,061 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:26,061 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 33, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:02:26,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-25 00:02:26,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-25 00:02:26,267 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-25 00:02:26,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:26,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1814578051, now seen corresponding path program 2 times [2023-11-25 00:02:26,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:26,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640451446] [2023-11-25 00:02:26,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:26,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:26,300 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:02:26,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709006088] [2023-11-25 00:02:26,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-25 00:02:26,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:26,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:26,302 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:02:26,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-25 00:02:26,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-25 00:02:26,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:02:26,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:02:26,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:02:26,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1721 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 1655 trivial. 0 not checked. [2023-11-25 00:02:26,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:02:26,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1721 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 1655 trivial. 0 not checked. [2023-11-25 00:02:26,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:26,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640451446] [2023-11-25 00:02:26,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:02:26,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709006088] [2023-11-25 00:02:26,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709006088] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:02:26,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1789665540] [2023-11-25 00:02:26,784 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-11-25 00:02:26,784 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:02:26,785 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:02:26,785 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:02:26,785 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:02:27,589 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:02:27,903 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14819#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= 2147483647 |ULTIMATE.start_main_~l~0#1|) (<= (+ |ULTIMATE.start_main_~l~0#1| 1) |ULTIMATE.start_main_~q~0#1|) (exists ((|v_#memory_int_117| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_117| |ULTIMATE.start_main_~#A~0#1.base| (store (select |v_#memory_int_117| |ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~l~0#1| 4) (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| (* |ULTIMATE.start_main_~q~0#1| 4)))) (* |ULTIMATE.start_main_~k~0#1| (* |ULTIMATE.start_main_~q~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| (* |ULTIMATE.start_main_~q~0#1| 4)))) |ULTIMATE.start_main_~C~0#1|)))))' at error location [2023-11-25 00:02:27,903 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-25 00:02:27,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:02:27,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-25 00:02:27,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457054570] [2023-11-25 00:02:27,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-25 00:02:27,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-25 00:02:27,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:27,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-25 00:02:27,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-25 00:02:27,906 INFO L87 Difference]: Start difference. First operand 1165 states and 1354 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 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) [2023-11-25 00:02:28,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:28,077 INFO L93 Difference]: Finished difference Result 1165 states and 1354 transitions. [2023-11-25 00:02:28,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:02:28,078 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 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 114 [2023-11-25 00:02:28,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:28,086 INFO L225 Difference]: With dead ends: 1165 [2023-11-25 00:02:28,086 INFO L226 Difference]: Without dead ends: 1163 [2023-11-25 00:02:28,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-11-25 00:02:28,088 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 55 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:28,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 42 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-25 00:02:28,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2023-11-25 00:02:28,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1163. [2023-11-25 00:02:28,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1157 states have (on average 1.0371650821089022) internal successors, (1200), 1162 states have internal predecessors, (1200), 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) [2023-11-25 00:02:28,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1200 transitions. [2023-11-25 00:02:28,202 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1200 transitions. Word has length 114 [2023-11-25 00:02:28,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:28,204 INFO L495 AbstractCegarLoop]: Abstraction has 1163 states and 1200 transitions. [2023-11-25 00:02:28,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 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) [2023-11-25 00:02:28,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1200 transitions. [2023-11-25 00:02:28,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-25 00:02:28,209 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:28,209 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-25 00:02:28,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-25 00:02:28,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-25 00:02:28,415 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-25 00:02:28,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:28,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1538159245, now seen corresponding path program 2 times [2023-11-25 00:02:28,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:28,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27081251] [2023-11-25 00:02:28,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:28,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:28,447 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:02:28,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1066296815] [2023-11-25 00:02:28,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-25 00:02:28,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:28,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:28,449 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:02:28,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-25 00:02:28,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-25 00:02:28,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:02:28,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:02:28,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:02:28,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2930 backedges. 0 proven. 1499 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2023-11-25 00:02:28,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:02:28,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2930 backedges. 0 proven. 1499 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2023-11-25 00:02:28,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:28,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27081251] [2023-11-25 00:02:28,939 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:02:28,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066296815] [2023-11-25 00:02:28,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066296815] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:02:28,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1870521237] [2023-11-25 00:02:28,941 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-25 00:02:28,941 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:02:28,942 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:02:28,942 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:02:28,942 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:02:29,308 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:02:29,867 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18810#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~i~0#1| 0) (<= 0 (+ |ULTIMATE.start_main_~C~0#1| 2147483648)) (= |ULTIMATE.start_main_~m~0#1| 1000) (<= 2 |ULTIMATE.start_main_~#A~0#1.base|) (<= |ULTIMATE.start_main_~C~0#1| 2147483647) (= |ULTIMATE.start_main_~p~0#1| 1800) (<= 2147483647 |ULTIMATE.start_main_~k~0#1|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= 2000 |ULTIMATE.start_main_~q~0#1|) (= |ULTIMATE.start_main_~j~0#1| 0) (<= 2000 |ULTIMATE.start_main_~l~0#1|) (= |ULTIMATE.start_main_~n~0#1| 1500))' at error location [2023-11-25 00:02:29,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-25 00:02:29,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:02:29,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-25 00:02:29,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186165571] [2023-11-25 00:02:29,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-25 00:02:29,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-25 00:02:29,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:29,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-25 00:02:29,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-25 00:02:29,869 INFO L87 Difference]: Start difference. First operand 1163 states and 1200 transitions. Second operand has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2023-11-25 00:02:30,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:30,019 INFO L93 Difference]: Finished difference Result 1163 states and 1200 transitions. [2023-11-25 00:02:30,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:02:30,020 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 143 [2023-11-25 00:02:30,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:30,026 INFO L225 Difference]: With dead ends: 1163 [2023-11-25 00:02:30,026 INFO L226 Difference]: Without dead ends: 1161 [2023-11-25 00:02:30,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-11-25 00:02:30,028 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 80 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:30,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 32 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-25 00:02:30,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2023-11-25 00:02:30,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 609. [2023-11-25 00:02:30,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 605 states have (on average 1.0446280991735537) internal successors, (632), 608 states have internal predecessors, (632), 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) [2023-11-25 00:02:30,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 632 transitions. [2023-11-25 00:02:30,105 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 632 transitions. Word has length 143 [2023-11-25 00:02:30,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:30,105 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 632 transitions. [2023-11-25 00:02:30,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2023-11-25 00:02:30,106 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 632 transitions. [2023-11-25 00:02:30,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-25 00:02:30,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:30,108 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-25 00:02:30,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-25 00:02:30,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-25 00:02:30,313 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-25 00:02:30,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:30,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1043387263, now seen corresponding path program 1 times [2023-11-25 00:02:30,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:30,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131123793] [2023-11-25 00:02:30,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:30,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:30,340 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:02:30,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079702681] [2023-11-25 00:02:30,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:30,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:30,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:30,342 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:02:30,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-25 00:02:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:30,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-25 00:02:30,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:02:31,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2938 backedges. 1501 proven. 715 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2023-11-25 00:02:31,094 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:02:31,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2938 backedges. 1501 proven. 715 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2023-11-25 00:02:31,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:31,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131123793] [2023-11-25 00:02:31,861 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:02:31,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079702681] [2023-11-25 00:02:31,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079702681] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:02:31,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [568629146] [2023-11-25 00:02:31,863 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-11-25 00:02:31,863 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:02:31,863 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:02:31,864 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:02:31,864 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:02:32,583 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:02:32,915 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22144#(and (or (and (<= 2147483648 |ULTIMATE.start_main_~n~0#1|) (= 2147483647 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~l~0#1| 0) (<= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0)) (and (<= |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~l~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~k~0#1|))) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 2147483647 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~l~0#1|))' at error location [2023-11-25 00:02:32,915 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-25 00:02:32,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:02:32,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2023-11-25 00:02:32,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189777879] [2023-11-25 00:02:32,916 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-25 00:02:32,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-25 00:02:32,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:32,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-25 00:02:32,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1263, Invalid=2159, Unknown=0, NotChecked=0, Total=3422 [2023-11-25 00:02:32,920 INFO L87 Difference]: Start difference. First operand 609 states and 632 transitions. Second operand has 50 states, 50 states have (on average 3.08) internal successors, (154), 49 states have internal predecessors, (154), 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) [2023-11-25 00:02:34,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:34,691 INFO L93 Difference]: Finished difference Result 1790 states and 2028 transitions. [2023-11-25 00:02:34,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-25 00:02:34,691 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.08) internal successors, (154), 49 states have internal predecessors, (154), 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 150 [2023-11-25 00:02:34,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:34,697 INFO L225 Difference]: With dead ends: 1790 [2023-11-25 00:02:34,698 INFO L226 Difference]: Without dead ends: 1185 [2023-11-25 00:02:34,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2062 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2436, Invalid=4206, Unknown=0, NotChecked=0, Total=6642 [2023-11-25 00:02:34,702 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 657 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:34,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 86 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-25 00:02:34,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2023-11-25 00:02:34,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1185. [2023-11-25 00:02:34,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 1181 states have (on average 1.0228619813717188) internal successors, (1208), 1184 states have internal predecessors, (1208), 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) [2023-11-25 00:02:34,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1208 transitions. [2023-11-25 00:02:34,838 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1208 transitions. Word has length 150 [2023-11-25 00:02:34,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:34,839 INFO L495 AbstractCegarLoop]: Abstraction has 1185 states and 1208 transitions. [2023-11-25 00:02:34,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.08) internal successors, (154), 49 states have internal predecessors, (154), 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) [2023-11-25 00:02:34,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1208 transitions. [2023-11-25 00:02:34,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-11-25 00:02:34,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:34,845 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-25 00:02:34,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-25 00:02:35,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:35,052 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-25 00:02:35,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:35,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1060371329, now seen corresponding path program 2 times [2023-11-25 00:02:35,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:35,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980933400] [2023-11-25 00:02:35,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:35,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:35,105 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:02:35,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1668063072] [2023-11-25 00:02:35,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-25 00:02:35,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:35,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:35,107 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:02:35,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-25 00:02:35,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-25 00:02:35,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:02:35,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:02:35,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:02:35,645 INFO L134 CoverageAnalysis]: Checked inductivity of 12754 backedges. 0 proven. 6449 refuted. 0 times theorem prover too weak. 6305 trivial. 0 not checked. [2023-11-25 00:02:35,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:02:36,003 INFO L134 CoverageAnalysis]: Checked inductivity of 12754 backedges. 0 proven. 6449 refuted. 0 times theorem prover too weak. 6305 trivial. 0 not checked. [2023-11-25 00:02:36,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:36,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980933400] [2023-11-25 00:02:36,004 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:02:36,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668063072] [2023-11-25 00:02:36,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668063072] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:02:36,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [782525652] [2023-11-25 00:02:36,006 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-11-25 00:02:36,006 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:02:36,006 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:02:36,006 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:02:36,006 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:02:36,610 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:02:36,903 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '27955#(and (or (and (<= 2147483648 |ULTIMATE.start_main_~n~0#1|) (= 2147483647 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~l~0#1| 0) (<= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0)) (and (<= |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~l~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~k~0#1|))) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 2147483647 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~l~0#1|))' at error location [2023-11-25 00:02:36,903 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-25 00:02:36,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:02:36,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-25 00:02:36,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353054129] [2023-11-25 00:02:36,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-25 00:02:36,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-25 00:02:36,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:36,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-25 00:02:36,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-11-25 00:02:36,906 INFO L87 Difference]: Start difference. First operand 1185 states and 1208 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2023-11-25 00:02:37,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:37,049 INFO L93 Difference]: Finished difference Result 1185 states and 1208 transitions. [2023-11-25 00:02:37,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:02:37,049 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 294 [2023-11-25 00:02:37,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:37,056 INFO L225 Difference]: With dead ends: 1185 [2023-11-25 00:02:37,056 INFO L226 Difference]: Without dead ends: 1183 [2023-11-25 00:02:37,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 867 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-11-25 00:02:37,058 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 52 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:37,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 24 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-25 00:02:37,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2023-11-25 00:02:37,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 603. [2023-11-25 00:02:37,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 601 states have (on average 1.0249584026622296) internal successors, (616), 602 states have internal predecessors, (616), 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) [2023-11-25 00:02:37,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 616 transitions. [2023-11-25 00:02:37,150 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 616 transitions. Word has length 294 [2023-11-25 00:02:37,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:37,151 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 616 transitions. [2023-11-25 00:02:37,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2023-11-25 00:02:37,151 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 616 transitions. [2023-11-25 00:02:37,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2023-11-25 00:02:37,155 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:37,156 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2023-11-25 00:02:37,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-25 00:02:37,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:37,361 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-25 00:02:37,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:37,362 INFO L85 PathProgramCache]: Analyzing trace with hash -113493548, now seen corresponding path program 1 times [2023-11-25 00:02:37,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:37,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227877458] [2023-11-25 00:02:37,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:37,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:37,435 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:02:37,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [357542186] [2023-11-25 00:02:37,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:37,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:37,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:37,438 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:02:37,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-25 00:02:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:37,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-25 00:02:37,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:02:39,502 INFO L134 CoverageAnalysis]: Checked inductivity of 12762 backedges. 6448 proven. 3151 refuted. 0 times theorem prover too weak. 3163 trivial. 0 not checked. [2023-11-25 00:02:39,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:02:42,141 INFO L134 CoverageAnalysis]: Checked inductivity of 12762 backedges. 6448 proven. 3151 refuted. 0 times theorem prover too weak. 3163 trivial. 0 not checked. [2023-11-25 00:02:42,142 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:42,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227877458] [2023-11-25 00:02:42,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:02:42,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357542186] [2023-11-25 00:02:42,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357542186] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:02:42,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1872637334] [2023-11-25 00:02:42,144 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-25 00:02:42,145 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:02:42,145 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:02:42,145 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:02:42,145 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:02:46,378 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:02:47,867 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '32266#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~C~0#1| 2147483648)) (= |ULTIMATE.start_main_~m~0#1| 1000) (<= 1500 |ULTIMATE.start_main_~j~0#1|) (<= 2 |ULTIMATE.start_main_~#A~0#1.base|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= |ULTIMATE.start_main_~C~0#1| 2147483647) (= |ULTIMATE.start_main_~p~0#1| 1800) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (= 2000 |ULTIMATE.start_main_~q~0#1|) (<= 2147483647 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~l~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~l~0#1|) (= |ULTIMATE.start_main_~n~0#1| 1500))' at error location [2023-11-25 00:02:47,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-25 00:02:47,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:02:47,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 97 [2023-11-25 00:02:47,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901926517] [2023-11-25 00:02:47,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-25 00:02:47,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2023-11-25 00:02:47,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:47,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2023-11-25 00:02:47,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4715, Invalid=7057, Unknown=0, NotChecked=0, Total=11772 [2023-11-25 00:02:47,880 INFO L87 Difference]: Start difference. First operand 603 states and 616 transitions. Second operand has 98 states, 98 states have (on average 3.0816326530612246) internal successors, (302), 97 states have internal predecessors, (302), 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) [2023-11-25 00:02:53,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:53,766 INFO L93 Difference]: Finished difference Result 1779 states and 1997 transitions. [2023-11-25 00:02:53,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-11-25 00:02:53,767 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 3.0816326530612246) internal successors, (302), 97 states have internal predecessors, (302), 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 301 [2023-11-25 00:02:53,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:53,773 INFO L225 Difference]: With dead ends: 1779 [2023-11-25 00:02:53,773 INFO L226 Difference]: Without dead ends: 1179 [2023-11-25 00:02:53,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 794 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6281 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=9321, Invalid=14859, Unknown=0, NotChecked=0, Total=24180 [2023-11-25 00:02:53,782 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 1536 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:53,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 76 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-25 00:02:53,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2023-11-25 00:02:53,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2023-11-25 00:02:53,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1177 states have (on average 1.0127442650807137) internal successors, (1192), 1178 states have internal predecessors, (1192), 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) [2023-11-25 00:02:53,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1192 transitions. [2023-11-25 00:02:53,962 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1192 transitions. Word has length 301 [2023-11-25 00:02:53,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:53,963 INFO L495 AbstractCegarLoop]: Abstraction has 1179 states and 1192 transitions. [2023-11-25 00:02:53,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 3.0816326530612246) internal successors, (302), 97 states have internal predecessors, (302), 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) [2023-11-25 00:02:53,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1192 transitions. [2023-11-25 00:02:53,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2023-11-25 00:02:53,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:53,980 INFO L195 NwaCegarLoop]: trace histogram [188, 188, 188, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2023-11-25 00:02:53,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-25 00:02:54,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:54,187 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-25 00:02:54,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:54,187 INFO L85 PathProgramCache]: Analyzing trace with hash -446328876, now seen corresponding path program 2 times [2023-11-25 00:02:54,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:54,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023357062] [2023-11-25 00:02:54,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:54,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:54,297 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:02:54,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1098418141] [2023-11-25 00:02:54,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-25 00:02:54,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:54,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:54,299 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:02:54,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-25 00:02:54,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-25 00:02:54,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:02:54,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:02:54,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:02:55,300 INFO L134 CoverageAnalysis]: Checked inductivity of 53130 backedges. 0 proven. 26711 refuted. 0 times theorem prover too weak. 26419 trivial. 0 not checked. [2023-11-25 00:02:55,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:02:56,021 INFO L134 CoverageAnalysis]: Checked inductivity of 53130 backedges. 0 proven. 26711 refuted. 0 times theorem prover too weak. 26419 trivial. 0 not checked. [2023-11-25 00:02:56,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:56,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023357062] [2023-11-25 00:02:56,022 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:02:56,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098418141] [2023-11-25 00:02:56,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098418141] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:02:56,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2055194463] [2023-11-25 00:02:56,025 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-25 00:02:56,025 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:02:56,025 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:02:56,026 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:02:56,026 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:02:58,962 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:02:59,919 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '39869#(and (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~C~0#1| 2147483648)) (= |ULTIMATE.start_main_~m~0#1| 1000) (<= 1500 |ULTIMATE.start_main_~j~0#1|) (<= 2 |ULTIMATE.start_main_~#A~0#1.base|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= |ULTIMATE.start_main_~C~0#1| 2147483647) (= |ULTIMATE.start_main_~p~0#1| 1800) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (= 2000 |ULTIMATE.start_main_~q~0#1|) (<= 2147483647 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~l~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~l~0#1|) (= |ULTIMATE.start_main_~n~0#1| 1500))' at error location [2023-11-25 00:02:59,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-25 00:02:59,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:02:59,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-25 00:02:59,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260038097] [2023-11-25 00:02:59,920 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-25 00:02:59,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-25 00:02:59,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:59,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-25 00:02:59,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-11-25 00:02:59,923 INFO L87 Difference]: Start difference. First operand 1179 states and 1192 transitions. Second operand has 6 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2023-11-25 00:03:00,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:00,194 INFO L93 Difference]: Finished difference Result 1179 states and 1192 transitions. [2023-11-25 00:03:00,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:03:00,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 589 [2023-11-25 00:03:00,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:00,196 INFO L225 Difference]: With dead ends: 1179 [2023-11-25 00:03:00,196 INFO L226 Difference]: Without dead ends: 0 [2023-11-25 00:03:00,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1767 GetRequests, 1750 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-11-25 00:03:00,199 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:00,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 16 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-25 00:03:00,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-25 00:03:00,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-25 00:03:00,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:03:00,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-25 00:03:00,201 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 589 [2023-11-25 00:03:00,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:00,202 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-25 00:03:00,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2023-11-25 00:03:00,202 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-25 00:03:00,202 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-25 00:03:00,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-11-25 00:03:00,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-11-25 00:03:00,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-11-25 00:03:00,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-11-25 00:03:00,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-11-25 00:03:00,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-11-25 00:03:00,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2023-11-25 00:03:00,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2023-11-25 00:03:00,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-11-25 00:03:00,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2023-11-25 00:03:00,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-11-25 00:03:00,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-11-25 00:03:00,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-11-25 00:03:00,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-11-25 00:03:00,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-11-25 00:03:00,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-11-25 00:03:00,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-25 00:03:00,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef831e6-b976-41eb-a076-6c983719eaae/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-25 00:03:00,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.