./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/recHanoi01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/recHanoi01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85b02fad28964214b0cd332ac12fce3136c6c5e9247130ab67f1c2c3baea22f9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:46:09,673 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:46:09,790 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 04:46:09,801 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:46:09,802 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:46:09,840 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:46:09,841 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:46:09,842 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:46:09,843 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:46:09,848 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:46:09,848 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:46:09,849 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:46:09,850 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:46:09,852 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:46:09,852 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:46:09,853 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:46:09,853 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:46:09,854 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:46:09,855 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:46:09,855 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:46:09,856 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:46:09,856 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:46:09,858 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:46:09,858 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:46:09,859 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:46:09,859 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:46:09,860 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:46:09,860 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:46:09,861 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:46:09,861 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:46:09,863 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:46:09,863 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:46:09,863 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:46:09,864 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:46:09,864 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:46:09,864 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:46:09,865 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:46:09,865 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:46:09,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:46:09,866 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:46:09,866 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:46:09,867 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:46:09,867 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:46:09,867 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:46:09,868 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:46:09,868 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:46:09,868 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:46:09,869 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_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85b02fad28964214b0cd332ac12fce3136c6c5e9247130ab67f1c2c3baea22f9 [2023-11-19 04:46:10,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:46:10,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:46:10,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:46:10,213 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:46:10,214 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:46:10,215 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/recursive/recHanoi01.c [2023-11-19 04:46:13,417 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:46:13,614 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:46:13,615 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/sv-benchmarks/c/recursive/recHanoi01.c [2023-11-19 04:46:13,627 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/data/20d1c2008/5a0a6cb171a64c2ba5a775c6b4e4bd2c/FLAG414c06770 [2023-11-19 04:46:13,643 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/data/20d1c2008/5a0a6cb171a64c2ba5a775c6b4e4bd2c [2023-11-19 04:46:13,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:46:13,647 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:46:13,649 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:46:13,649 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:46:13,655 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:46:13,656 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:46:13" (1/1) ... [2023-11-19 04:46:13,657 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31a9dbb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13, skipping insertion in model container [2023-11-19 04:46:13,657 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:46:13" (1/1) ... [2023-11-19 04:46:13,685 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:46:13,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:46:13,850 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:46:13,866 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:46:13,882 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:46:13,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13 WrapperNode [2023-11-19 04:46:13,883 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:46:13,884 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:46:13,884 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:46:13,885 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:46:13,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13" (1/1) ... [2023-11-19 04:46:13,901 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13" (1/1) ... [2023-11-19 04:46:13,920 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2023-11-19 04:46:13,921 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:46:13,921 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:46:13,922 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:46:13,922 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:46:13,932 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13" (1/1) ... [2023-11-19 04:46:13,932 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13" (1/1) ... [2023-11-19 04:46:13,934 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13" (1/1) ... [2023-11-19 04:46:13,935 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13" (1/1) ... [2023-11-19 04:46:13,938 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13" (1/1) ... [2023-11-19 04:46:13,940 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13" (1/1) ... [2023-11-19 04:46:13,942 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13" (1/1) ... [2023-11-19 04:46:13,943 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13" (1/1) ... [2023-11-19 04:46:13,945 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:46:13,946 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:46:13,946 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:46:13,946 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:46:13,947 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13" (1/1) ... [2023-11-19 04:46:13,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:46:13,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:46:13,992 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:46:14,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:46:14,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:46:14,034 INFO L130 BoogieDeclarations]: Found specification of procedure applyHanoi [2023-11-19 04:46:14,034 INFO L138 BoogieDeclarations]: Found implementation of procedure applyHanoi [2023-11-19 04:46:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2023-11-19 04:46:14,035 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2023-11-19 04:46:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:46:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:46:14,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:46:14,095 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:46:14,097 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:46:14,286 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:46:14,326 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:46:14,326 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:46:14,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:46:14 BoogieIcfgContainer [2023-11-19 04:46:14,331 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:46:14,334 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:46:14,334 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:46:14,352 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:46:14,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:46:13" (1/3) ... [2023-11-19 04:46:14,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f688a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:46:14, skipping insertion in model container [2023-11-19 04:46:14,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13" (2/3) ... [2023-11-19 04:46:14,354 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f688a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:46:14, skipping insertion in model container [2023-11-19 04:46:14,354 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:46:14" (3/3) ... [2023-11-19 04:46:14,355 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi01.c [2023-11-19 04:46:14,376 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:46:14,376 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-19 04:46:14,422 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:46:14,430 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;@27900a6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:46:14,430 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-19 04:46:14,434 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 36 states have internal predecessors, (38), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 04:46:14,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:46:14,440 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:14,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 04:46:14,441 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:46:14,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:14,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1272074397, now seen corresponding path program 1 times [2023-11-19 04:46:14,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:14,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647448717] [2023-11-19 04:46:14,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:14,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:14,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:14,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:14,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647448717] [2023-11-19 04:46:14,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647448717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:46:14,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:46:14,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:46:14,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207942928] [2023-11-19 04:46:14,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:46:14,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:46:14,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:14,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:46:14,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:46:14,784 INFO L87 Difference]: Start difference. First operand has 43 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 36 states have internal predecessors, (38), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:14,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:14,873 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2023-11-19 04:46:14,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:46:14,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 04:46:14,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:14,886 INFO L225 Difference]: With dead ends: 73 [2023-11-19 04:46:14,886 INFO L226 Difference]: Without dead ends: 65 [2023-11-19 04:46:14,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:46:14,893 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 30 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:14,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 122 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:46:14,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-19 04:46:14,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 46. [2023-11-19 04:46:14,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 39 states have internal predecessors, (41), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-19 04:46:14,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2023-11-19 04:46:14,961 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 6 [2023-11-19 04:46:14,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:14,962 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2023-11-19 04:46:14,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:14,962 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2023-11-19 04:46:14,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:46:14,964 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:14,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:46:14,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:46:14,965 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:46:14,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:14,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1602185061, now seen corresponding path program 1 times [2023-11-19 04:46:14,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:14,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302202174] [2023-11-19 04:46:14,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:14,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:15,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:15,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:15,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302202174] [2023-11-19 04:46:15,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302202174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:46:15,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:46:15,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:46:15,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557582952] [2023-11-19 04:46:15,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:46:15,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:46:15,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:15,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:46:15,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:46:15,141 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:15,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:15,260 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2023-11-19 04:46:15,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:46:15,261 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 04:46:15,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:15,262 INFO L225 Difference]: With dead ends: 77 [2023-11-19 04:46:15,262 INFO L226 Difference]: Without dead ends: 54 [2023-11-19 04:46:15,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:46:15,265 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 18 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:15,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 134 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:46:15,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-19 04:46:15,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2023-11-19 04:46:15,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 43 states have internal predecessors, (46), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 04:46:15,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2023-11-19 04:46:15,286 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 8 [2023-11-19 04:46:15,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:15,287 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2023-11-19 04:46:15,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:15,288 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2023-11-19 04:46:15,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 04:46:15,290 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:15,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:46:15,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:46:15,292 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting applyHanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:46:15,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:15,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1871870619, now seen corresponding path program 1 times [2023-11-19 04:46:15,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:15,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106511494] [2023-11-19 04:46:15,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:15,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:15,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:15,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:15,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:15,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106511494] [2023-11-19 04:46:15,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106511494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:46:15,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:46:15,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:46:15,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440212291] [2023-11-19 04:46:15,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:46:15,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:46:15,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:15,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:46:15,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:46:15,412 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:15,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:15,469 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2023-11-19 04:46:15,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:46:15,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 04:46:15,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:15,471 INFO L225 Difference]: With dead ends: 52 [2023-11-19 04:46:15,471 INFO L226 Difference]: Without dead ends: 50 [2023-11-19 04:46:15,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:46:15,474 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 23 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:15,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 98 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:46:15,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-19 04:46:15,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-19 04:46:15,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 30 states have (on average 1.4) internal successors, (42), 41 states have internal predecessors, (42), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 04:46:15,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2023-11-19 04:46:15,486 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 9 [2023-11-19 04:46:15,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:15,487 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2023-11-19 04:46:15,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:15,487 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2023-11-19 04:46:15,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 04:46:15,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:15,488 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:46:15,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:46:15,489 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:46:15,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:15,490 INFO L85 PathProgramCache]: Analyzing trace with hash -371390904, now seen corresponding path program 1 times [2023-11-19 04:46:15,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:15,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762673632] [2023-11-19 04:46:15,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:15,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:15,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:15,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:15,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762673632] [2023-11-19 04:46:15,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762673632] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:46:15,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624342902] [2023-11-19 04:46:15,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:15,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:46:15,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:46:15,659 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:46:15,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:46:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:15,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:46:15,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:46:15,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:15,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:46:15,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624342902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:46:15,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:46:15,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-19 04:46:15,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738184014] [2023-11-19 04:46:15,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:46:15,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:46:15,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:15,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:46:15,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-19 04:46:15,862 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:15,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:15,920 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2023-11-19 04:46:15,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:46:15,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-19 04:46:15,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:15,923 INFO L225 Difference]: With dead ends: 50 [2023-11-19 04:46:15,923 INFO L226 Difference]: Without dead ends: 49 [2023-11-19 04:46:15,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-19 04:46:15,926 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 36 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:15,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 108 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:46:15,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-19 04:46:15,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-11-19 04:46:15,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 40 states have internal predecessors, (41), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 04:46:15,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2023-11-19 04:46:15,953 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 13 [2023-11-19 04:46:15,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:15,954 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2023-11-19 04:46:15,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:15,954 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2023-11-19 04:46:15,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 04:46:15,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:15,955 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:46:15,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:46:16,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:46:16,181 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:46:16,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:16,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1371783902, now seen corresponding path program 1 times [2023-11-19 04:46:16,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:16,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026854500] [2023-11-19 04:46:16,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:16,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:16,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:16,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:16,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026854500] [2023-11-19 04:46:16,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026854500] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:46:16,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864529464] [2023-11-19 04:46:16,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:16,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:46:16,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:46:16,308 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:46:16,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:46:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:16,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 04:46:16,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:46:16,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:16,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:46:16,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:16,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864529464] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:46:16,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1626319359] [2023-11-19 04:46:16,578 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-19 04:46:16,578 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:46:16,602 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-19 04:46:16,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:46:16,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-19 04:46:16,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453241395] [2023-11-19 04:46:16,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:46:16,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 04:46:16,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:16,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 04:46:16,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-19 04:46:16,610 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:16,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:16,776 INFO L93 Difference]: Finished difference Result 156 states and 188 transitions. [2023-11-19 04:46:16,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 04:46:16,777 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-19 04:46:16,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:16,781 INFO L225 Difference]: With dead ends: 156 [2023-11-19 04:46:16,781 INFO L226 Difference]: Without dead ends: 155 [2023-11-19 04:46:16,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-11-19 04:46:16,783 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 103 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:16,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 264 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:46:16,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-19 04:46:16,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 88. [2023-11-19 04:46:16,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 59 states have (on average 1.305084745762712) internal successors, (77), 71 states have internal predecessors, (77), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (28), 13 states have call predecessors, (28), 13 states have call successors, (28) [2023-11-19 04:46:16,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 119 transitions. [2023-11-19 04:46:16,805 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 119 transitions. Word has length 14 [2023-11-19 04:46:16,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:16,806 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 119 transitions. [2023-11-19 04:46:16,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:16,806 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 119 transitions. [2023-11-19 04:46:16,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 04:46:16,807 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:16,807 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:46:16,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:46:17,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:46:17,028 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:46:17,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:17,029 INFO L85 PathProgramCache]: Analyzing trace with hash -424371958, now seen corresponding path program 1 times [2023-11-19 04:46:17,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:17,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651408844] [2023-11-19 04:46:17,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:17,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:17,137 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:17,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:17,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651408844] [2023-11-19 04:46:17,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651408844] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:46:17,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659572280] [2023-11-19 04:46:17,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:17,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:46:17,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:46:17,140 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:46:17,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:46:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:17,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:46:17,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:46:17,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:17,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:46:17,315 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:17,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659572280] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:46:17,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1042522496] [2023-11-19 04:46:17,321 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-19 04:46:17,322 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:46:17,322 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-19 04:46:17,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:46:17,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-19 04:46:17,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461592145] [2023-11-19 04:46:17,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:46:17,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 04:46:17,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:17,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 04:46:17,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-19 04:46:17,326 INFO L87 Difference]: Start difference. First operand 88 states and 119 transitions. Second operand has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:17,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:17,444 INFO L93 Difference]: Finished difference Result 94 states and 125 transitions. [2023-11-19 04:46:17,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 04:46:17,444 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-19 04:46:17,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:17,448 INFO L225 Difference]: With dead ends: 94 [2023-11-19 04:46:17,448 INFO L226 Difference]: Without dead ends: 92 [2023-11-19 04:46:17,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-11-19 04:46:17,451 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 47 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:17,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 168 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:46:17,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-19 04:46:17,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2023-11-19 04:46:17,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 62 states have (on average 1.1935483870967742) internal successors, (74), 72 states have internal predecessors, (74), 14 states have call successors, (14), 6 states have call predecessors, (14), 9 states have return successors, (31), 13 states have call predecessors, (31), 13 states have call successors, (31) [2023-11-19 04:46:17,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 119 transitions. [2023-11-19 04:46:17,478 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 119 transitions. Word has length 15 [2023-11-19 04:46:17,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:17,479 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 119 transitions. [2023-11-19 04:46:17,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:17,479 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 119 transitions. [2023-11-19 04:46:17,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 04:46:17,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:17,481 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:46:17,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:46:17,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:46:17,698 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:46:17,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:17,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1375829865, now seen corresponding path program 1 times [2023-11-19 04:46:17,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:17,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360160613] [2023-11-19 04:46:17,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:17,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:17,801 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 04:46:17,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:17,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360160613] [2023-11-19 04:46:17,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360160613] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:46:17,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:46:17,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:46:17,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111821045] [2023-11-19 04:46:17,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:46:17,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:46:17,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:17,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:46:17,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:46:17,805 INFO L87 Difference]: Start difference. First operand 92 states and 119 transitions. Second operand has 5 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 04:46:17,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:17,851 INFO L93 Difference]: Finished difference Result 112 states and 141 transitions. [2023-11-19 04:46:17,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:46:17,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2023-11-19 04:46:17,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:17,854 INFO L225 Difference]: With dead ends: 112 [2023-11-19 04:46:17,854 INFO L226 Difference]: Without dead ends: 109 [2023-11-19 04:46:17,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:46:17,856 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 31 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:17,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 126 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:46:17,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-19 04:46:17,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 102. [2023-11-19 04:46:17,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 80 states have internal predecessors, (87), 15 states have call successors, (15), 7 states have call predecessors, (15), 9 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) [2023-11-19 04:46:17,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 134 transitions. [2023-11-19 04:46:17,874 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 134 transitions. Word has length 27 [2023-11-19 04:46:17,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:17,875 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 134 transitions. [2023-11-19 04:46:17,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 04:46:17,875 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 134 transitions. [2023-11-19 04:46:17,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 04:46:17,877 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:17,877 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:46:17,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 04:46:17,877 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:46:17,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:17,878 INFO L85 PathProgramCache]: Analyzing trace with hash -298947087, now seen corresponding path program 1 times [2023-11-19 04:46:17,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:17,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47858555] [2023-11-19 04:46:17,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:17,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:18,013 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:46:18,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:18,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47858555] [2023-11-19 04:46:18,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47858555] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:46:18,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73915841] [2023-11-19 04:46:18,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:18,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:46:18,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:46:18,016 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:46:18,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 04:46:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:18,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:46:18,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:46:18,120 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 04:46:18,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:46:18,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73915841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:46:18,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:46:18,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-19 04:46:18,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107538123] [2023-11-19 04:46:18,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:46:18,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:46:18,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:18,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:46:18,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-19 04:46:18,124 INFO L87 Difference]: Start difference. First operand 102 states and 134 transitions. Second operand has 5 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 04:46:18,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:18,165 INFO L93 Difference]: Finished difference Result 102 states and 134 transitions. [2023-11-19 04:46:18,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:46:18,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2023-11-19 04:46:18,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:18,169 INFO L225 Difference]: With dead ends: 102 [2023-11-19 04:46:18,170 INFO L226 Difference]: Without dead ends: 101 [2023-11-19 04:46:18,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-19 04:46:18,173 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 29 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:18,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 94 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:46:18,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-19 04:46:18,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2023-11-19 04:46:18,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 71 states have (on average 1.1971830985915493) internal successors, (85), 79 states have internal predecessors, (85), 15 states have call successors, (15), 7 states have call predecessors, (15), 9 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) [2023-11-19 04:46:18,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 132 transitions. [2023-11-19 04:46:18,208 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 132 transitions. Word has length 28 [2023-11-19 04:46:18,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:18,209 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 132 transitions. [2023-11-19 04:46:18,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 04:46:18,209 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 132 transitions. [2023-11-19 04:46:18,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 04:46:18,218 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:18,218 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:46:18,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:46:18,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:46:18,442 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:46:18,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:18,442 INFO L85 PathProgramCache]: Analyzing trace with hash 882960356, now seen corresponding path program 1 times [2023-11-19 04:46:18,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:18,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117897705] [2023-11-19 04:46:18,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:18,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:18,520 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 04:46:18,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:18,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117897705] [2023-11-19 04:46:18,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117897705] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:46:18,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137765298] [2023-11-19 04:46:18,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:18,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:46:18,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:46:18,522 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:46:18,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 04:46:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:18,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:46:18,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:46:18,607 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 04:46:18,607 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:46:18,696 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 04:46:18,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137765298] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:46:18,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1862772311] [2023-11-19 04:46:18,699 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-11-19 04:46:18,699 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:46:18,700 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-19 04:46:18,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:46:18,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-19 04:46:18,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137474938] [2023-11-19 04:46:18,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:46:18,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 04:46:18,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:18,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 04:46:18,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-19 04:46:18,702 INFO L87 Difference]: Start difference. First operand 101 states and 132 transitions. Second operand has 12 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 04:46:18,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:18,858 INFO L93 Difference]: Finished difference Result 162 states and 195 transitions. [2023-11-19 04:46:18,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 04:46:18,859 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2023-11-19 04:46:18,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:18,860 INFO L225 Difference]: With dead ends: 162 [2023-11-19 04:46:18,861 INFO L226 Difference]: Without dead ends: 161 [2023-11-19 04:46:18,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2023-11-19 04:46:18,862 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 133 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:18,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 294 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:46:18,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-19 04:46:18,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 137. [2023-11-19 04:46:18,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 101 states have (on average 1.2871287128712872) internal successors, (130), 109 states have internal predecessors, (130), 18 states have call successors, (18), 10 states have call predecessors, (18), 12 states have return successors, (35), 17 states have call predecessors, (35), 17 states have call successors, (35) [2023-11-19 04:46:18,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 183 transitions. [2023-11-19 04:46:18,881 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 183 transitions. Word has length 32 [2023-11-19 04:46:18,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:18,881 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 183 transitions. [2023-11-19 04:46:18,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 04:46:18,881 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 183 transitions. [2023-11-19 04:46:18,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-19 04:46:18,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:18,883 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:46:18,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 04:46:19,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:46:19,092 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:46:19,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:19,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1891804754, now seen corresponding path program 1 times [2023-11-19 04:46:19,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:19,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628034229] [2023-11-19 04:46:19,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:19,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:19,141 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 04:46:19,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:19,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628034229] [2023-11-19 04:46:19,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628034229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:46:19,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:46:19,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:46:19,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125127206] [2023-11-19 04:46:19,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:46:19,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:46:19,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:19,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:46:19,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:46:19,144 INFO L87 Difference]: Start difference. First operand 137 states and 183 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 04:46:19,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:19,178 INFO L93 Difference]: Finished difference Result 174 states and 236 transitions. [2023-11-19 04:46:19,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:46:19,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 35 [2023-11-19 04:46:19,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:19,180 INFO L225 Difference]: With dead ends: 174 [2023-11-19 04:46:19,180 INFO L226 Difference]: Without dead ends: 163 [2023-11-19 04:46:19,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:46:19,182 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 3 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:19,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 91 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:46:19,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-11-19 04:46:19,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2023-11-19 04:46:19,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 124 states have (on average 1.2258064516129032) internal successors, (152), 131 states have internal predecessors, (152), 18 states have call successors, (18), 10 states have call predecessors, (18), 15 states have return successors, (39), 21 states have call predecessors, (39), 17 states have call successors, (39) [2023-11-19 04:46:19,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 209 transitions. [2023-11-19 04:46:19,199 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 209 transitions. Word has length 35 [2023-11-19 04:46:19,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:19,199 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 209 transitions. [2023-11-19 04:46:19,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 04:46:19,199 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 209 transitions. [2023-11-19 04:46:19,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-19 04:46:19,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:19,201 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1] [2023-11-19 04:46:19,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 04:46:19,201 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:46:19,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:19,201 INFO L85 PathProgramCache]: Analyzing trace with hash -441273245, now seen corresponding path program 2 times [2023-11-19 04:46:19,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:19,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900077074] [2023-11-19 04:46:19,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:19,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:19,505 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:19,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:19,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900077074] [2023-11-19 04:46:19,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900077074] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:46:19,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575035105] [2023-11-19 04:46:19,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:46:19,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:46:19,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:46:19,507 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:46:19,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 04:46:19,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-19 04:46:19,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:46:19,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-19 04:46:19,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:46:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:19,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:46:19,890 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:19,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575035105] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:46:19,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [37169851] [2023-11-19 04:46:19,892 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-19 04:46:19,892 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:46:19,893 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-19 04:46:19,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:46:19,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-11-19 04:46:19,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118939415] [2023-11-19 04:46:19,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:46:19,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 04:46:19,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:19,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 04:46:19,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2023-11-19 04:46:19,895 INFO L87 Difference]: Start difference. First operand 163 states and 209 transitions. Second operand has 24 states, 23 states have (on average 2.782608695652174) internal successors, (64), 24 states have internal predecessors, (64), 11 states have call successors, (11), 11 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:20,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:20,445 INFO L93 Difference]: Finished difference Result 1094 states and 1448 transitions. [2023-11-19 04:46:20,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-19 04:46:20,446 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.782608695652174) internal successors, (64), 24 states have internal predecessors, (64), 11 states have call successors, (11), 11 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-11-19 04:46:20,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:20,454 INFO L225 Difference]: With dead ends: 1094 [2023-11-19 04:46:20,455 INFO L226 Difference]: Without dead ends: 1093 [2023-11-19 04:46:20,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=332, Invalid=790, Unknown=0, NotChecked=0, Total=1122 [2023-11-19 04:46:20,458 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 492 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:20,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 385 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:46:20,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2023-11-19 04:46:20,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 265. [2023-11-19 04:46:20,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 196 states have (on average 1.1734693877551021) internal successors, (230), 209 states have internal predecessors, (230), 36 states have call successors, (36), 16 states have call predecessors, (36), 27 states have return successors, (168), 39 states have call predecessors, (168), 35 states have call successors, (168) [2023-11-19 04:46:20,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 434 transitions. [2023-11-19 04:46:20,507 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 434 transitions. Word has length 35 [2023-11-19 04:46:20,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:20,507 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 434 transitions. [2023-11-19 04:46:20,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.782608695652174) internal successors, (64), 24 states have internal predecessors, (64), 11 states have call successors, (11), 11 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:20,508 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 434 transitions. [2023-11-19 04:46:20,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-19 04:46:20,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:20,509 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:46:20,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 04:46:20,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:46:20,730 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:46:20,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:20,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1872817879, now seen corresponding path program 2 times [2023-11-19 04:46:20,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:20,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023547086] [2023-11-19 04:46:20,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:20,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:20,973 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 46 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:46:20,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:20,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023547086] [2023-11-19 04:46:20,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023547086] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:46:20,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011691519] [2023-11-19 04:46:20,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:46:20,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:46:20,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:46:20,976 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:46:21,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 04:46:21,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-19 04:46:21,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:46:21,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 04:46:21,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:46:21,161 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-19 04:46:21,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:46:21,402 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-19 04:46:21,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011691519] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:46:21,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1626402908] [2023-11-19 04:46:21,406 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-11-19 04:46:21,406 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:46:21,406 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-19 04:46:21,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:46:21,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 10] total 24 [2023-11-19 04:46:21,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534663019] [2023-11-19 04:46:21,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:46:21,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 04:46:21,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:21,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 04:46:21,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2023-11-19 04:46:21,410 INFO L87 Difference]: Start difference. First operand 265 states and 434 transitions. Second operand has 24 states, 22 states have (on average 2.909090909090909) internal successors, (64), 17 states have internal predecessors, (64), 12 states have call successors, (15), 8 states have call predecessors, (15), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-19 04:46:21,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:21,870 INFO L93 Difference]: Finished difference Result 612 states and 1111 transitions. [2023-11-19 04:46:21,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-19 04:46:21,871 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.909090909090909) internal successors, (64), 17 states have internal predecessors, (64), 12 states have call successors, (15), 8 states have call predecessors, (15), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 47 [2023-11-19 04:46:21,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:21,876 INFO L225 Difference]: With dead ends: 612 [2023-11-19 04:46:21,876 INFO L226 Difference]: Without dead ends: 355 [2023-11-19 04:46:21,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 85 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=239, Invalid=1167, Unknown=0, NotChecked=0, Total=1406 [2023-11-19 04:46:21,883 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 228 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:21,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 344 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:46:21,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-11-19 04:46:21,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 333. [2023-11-19 04:46:21,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 249 states have (on average 1.1526104417670682) internal successors, (287), 252 states have internal predecessors, (287), 44 states have call successors, (44), 26 states have call predecessors, (44), 34 states have return successors, (196), 54 states have call predecessors, (196), 43 states have call successors, (196) [2023-11-19 04:46:21,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 527 transitions. [2023-11-19 04:46:21,950 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 527 transitions. Word has length 47 [2023-11-19 04:46:21,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:21,951 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 527 transitions. [2023-11-19 04:46:21,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.909090909090909) internal successors, (64), 17 states have internal predecessors, (64), 12 states have call successors, (15), 8 states have call predecessors, (15), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-19 04:46:21,951 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 527 transitions. [2023-11-19 04:46:21,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-19 04:46:21,954 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:21,954 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:46:21,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 04:46:22,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 04:46:22,173 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:46:22,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:22,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1957779916, now seen corresponding path program 1 times [2023-11-19 04:46:22,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:22,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929483965] [2023-11-19 04:46:22,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:22,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:22,474 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 14 proven. 58 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-19 04:46:22,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:22,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929483965] [2023-11-19 04:46:22,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929483965] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:46:22,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770375809] [2023-11-19 04:46:22,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:22,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:46:22,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:46:22,476 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:46:22,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 04:46:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:22,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 04:46:22,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:46:22,661 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 14 proven. 58 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-19 04:46:22,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:46:23,217 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 14 proven. 67 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-19 04:46:23,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770375809] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:46:23,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [688609030] [2023-11-19 04:46:23,224 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-11-19 04:46:23,225 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:46:23,225 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-19 04:46:23,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:46:23,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 15] total 17 [2023-11-19 04:46:23,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313974081] [2023-11-19 04:46:23,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:46:23,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 04:46:23,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:23,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 04:46:23,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-11-19 04:46:23,228 INFO L87 Difference]: Start difference. First operand 333 states and 527 transitions. Second operand has 17 states, 16 states have (on average 4.0) internal successors, (64), 15 states have internal predecessors, (64), 10 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (12), 6 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-19 04:46:23,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:23,531 INFO L93 Difference]: Finished difference Result 501 states and 854 transitions. [2023-11-19 04:46:23,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 04:46:23,532 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.0) internal successors, (64), 15 states have internal predecessors, (64), 10 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (12), 6 states have call predecessors, (12), 9 states have call successors, (12) Word has length 79 [2023-11-19 04:46:23,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:23,537 INFO L225 Difference]: With dead ends: 501 [2023-11-19 04:46:23,537 INFO L226 Difference]: Without dead ends: 414 [2023-11-19 04:46:23,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 148 SyntacticMatches, 8 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2023-11-19 04:46:23,539 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 72 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:23,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 169 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:46:23,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2023-11-19 04:46:23,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 397. [2023-11-19 04:46:23,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 294 states have (on average 1.1326530612244898) internal successors, (333), 296 states have internal predecessors, (333), 59 states have call successors, (59), 32 states have call predecessors, (59), 38 states have return successors, (279), 68 states have call predecessors, (279), 52 states have call successors, (279) [2023-11-19 04:46:23,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 671 transitions. [2023-11-19 04:46:23,635 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 671 transitions. Word has length 79 [2023-11-19 04:46:23,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:23,635 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 671 transitions. [2023-11-19 04:46:23,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.0) internal successors, (64), 15 states have internal predecessors, (64), 10 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (12), 6 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-19 04:46:23,636 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 671 transitions. [2023-11-19 04:46:23,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-19 04:46:23,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:23,639 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2023-11-19 04:46:23,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 04:46:23,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 04:46:23,860 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:46:23,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:23,861 INFO L85 PathProgramCache]: Analyzing trace with hash 197755908, now seen corresponding path program 3 times [2023-11-19 04:46:23,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:23,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008087332] [2023-11-19 04:46:23,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:23,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:24,247 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 19 proven. 107 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-19 04:46:24,248 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:24,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008087332] [2023-11-19 04:46:24,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008087332] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:46:24,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085805324] [2023-11-19 04:46:24,248 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 04:46:24,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:46:24,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:46:24,250 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:46:24,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 04:46:24,337 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 04:46:24,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:46:24,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-19 04:46:24,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:46:24,542 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 39 proven. 53 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-19 04:46:24,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:46:24,864 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 39 proven. 61 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-19 04:46:24,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085805324] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:46:24,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1278965774] [2023-11-19 04:46:24,870 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-11-19 04:46:24,870 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:46:24,872 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-19 04:46:24,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:46:24,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 13] total 31 [2023-11-19 04:46:24,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939663279] [2023-11-19 04:46:24,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:46:24,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-19 04:46:24,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:24,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-19 04:46:24,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2023-11-19 04:46:24,875 INFO L87 Difference]: Start difference. First operand 397 states and 671 transitions. Second operand has 31 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 21 states have internal predecessors, (88), 18 states have call successors, (20), 10 states have call predecessors, (20), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2023-11-19 04:46:25,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:25,393 INFO L93 Difference]: Finished difference Result 841 states and 1428 transitions. [2023-11-19 04:46:25,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-19 04:46:25,394 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 21 states have internal predecessors, (88), 18 states have call successors, (20), 10 states have call predecessors, (20), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) Word has length 84 [2023-11-19 04:46:25,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:25,398 INFO L225 Difference]: With dead ends: 841 [2023-11-19 04:46:25,398 INFO L226 Difference]: Without dead ends: 465 [2023-11-19 04:46:25,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=285, Invalid=1521, Unknown=0, NotChecked=0, Total=1806 [2023-11-19 04:46:25,403 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 172 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:25,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 392 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:46:25,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2023-11-19 04:46:25,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 404. [2023-11-19 04:46:25,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 312 states have (on average 1.1185897435897436) internal successors, (349), 307 states have internal predecessors, (349), 52 states have call successors, (52), 40 states have call predecessors, (52), 35 states have return successors, (100), 56 states have call predecessors, (100), 51 states have call successors, (100) [2023-11-19 04:46:25,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 501 transitions. [2023-11-19 04:46:25,455 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 501 transitions. Word has length 84 [2023-11-19 04:46:25,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:25,455 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 501 transitions. [2023-11-19 04:46:25,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 21 states have internal predecessors, (88), 18 states have call successors, (20), 10 states have call predecessors, (20), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2023-11-19 04:46:25,455 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 501 transitions. [2023-11-19 04:46:25,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 04:46:25,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:25,458 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1] [2023-11-19 04:46:25,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 04:46:25,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 04:46:25,676 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:46:25,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:25,676 INFO L85 PathProgramCache]: Analyzing trace with hash -111242429, now seen corresponding path program 3 times [2023-11-19 04:46:25,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:25,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117664832] [2023-11-19 04:46:25,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:25,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:26,629 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:26,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:26,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117664832] [2023-11-19 04:46:26,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117664832] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:46:26,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440264277] [2023-11-19 04:46:26,629 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 04:46:26,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:46:26,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:46:26,636 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:46:26,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 04:46:26,745 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 04:46:26,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:46:26,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-19 04:46:26,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:46:26,915 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:26,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:46:27,595 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:27,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440264277] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:46:27,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [168363787] [2023-11-19 04:46:27,597 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-19 04:46:27,597 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:46:27,598 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-19 04:46:27,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:46:27,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2023-11-19 04:46:27,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610519217] [2023-11-19 04:46:27,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:46:27,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-19 04:46:27,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:27,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-19 04:46:27,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2023-11-19 04:46:27,602 INFO L87 Difference]: Start difference. First operand 404 states and 501 transitions. Second operand has 48 states, 47 states have (on average 2.893617021276596) internal successors, (136), 48 states have internal predecessors, (136), 23 states have call successors, (23), 23 states have call predecessors, (23), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:29,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:29,130 INFO L93 Difference]: Finished difference Result 1699 states and 2268 transitions. [2023-11-19 04:46:29,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-19 04:46:29,131 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.893617021276596) internal successors, (136), 48 states have internal predecessors, (136), 23 states have call successors, (23), 23 states have call predecessors, (23), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-11-19 04:46:29,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:29,143 INFO L225 Difference]: With dead ends: 1699 [2023-11-19 04:46:29,143 INFO L226 Difference]: Without dead ends: 1698 [2023-11-19 04:46:29,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1382, Invalid=3448, Unknown=0, NotChecked=0, Total=4830 [2023-11-19 04:46:29,148 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 722 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:29,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 752 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 04:46:29,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2023-11-19 04:46:29,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 818. [2023-11-19 04:46:29,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 624 states have (on average 1.078525641025641) internal successors, (673), 607 states have internal predecessors, (673), 118 states have call successors, (118), 88 states have call predecessors, (118), 71 states have return successors, (373), 122 states have call predecessors, (373), 117 states have call successors, (373) [2023-11-19 04:46:29,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1164 transitions. [2023-11-19 04:46:29,285 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1164 transitions. Word has length 77 [2023-11-19 04:46:29,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:29,287 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1164 transitions. [2023-11-19 04:46:29,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.893617021276596) internal successors, (136), 48 states have internal predecessors, (136), 23 states have call successors, (23), 23 states have call predecessors, (23), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:29,287 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1164 transitions. [2023-11-19 04:46:29,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-19 04:46:29,296 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:29,296 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:46:29,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 04:46:29,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 04:46:29,518 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:46:29,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:29,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1756817972, now seen corresponding path program 2 times [2023-11-19 04:46:29,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:29,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801783480] [2023-11-19 04:46:29,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:29,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:29,680 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2023-11-19 04:46:29,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:29,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801783480] [2023-11-19 04:46:29,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801783480] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:46:29,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699270272] [2023-11-19 04:46:29,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:46:29,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:46:29,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:46:29,682 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:46:29,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 04:46:29,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 04:46:29,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:46:29,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:46:29,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:46:29,817 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2023-11-19 04:46:29,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:46:29,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699270272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:46:29,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:46:29,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-19 04:46:29,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27356086] [2023-11-19 04:46:29,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:46:29,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:46:29,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:29,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:46:29,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:46:29,819 INFO L87 Difference]: Start difference. First operand 818 states and 1164 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-19 04:46:29,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:29,906 INFO L93 Difference]: Finished difference Result 818 states and 1164 transitions. [2023-11-19 04:46:29,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:46:29,907 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 143 [2023-11-19 04:46:29,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:29,914 INFO L225 Difference]: With dead ends: 818 [2023-11-19 04:46:29,914 INFO L226 Difference]: Without dead ends: 816 [2023-11-19 04:46:29,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:46:29,915 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 7 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:29,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 109 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:46:29,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-11-19 04:46:30,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2023-11-19 04:46:30,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 624 states have (on average 1.0592948717948718) internal successors, (661), 605 states have internal predecessors, (661), 118 states have call successors, (118), 88 states have call predecessors, (118), 71 states have return successors, (373), 122 states have call predecessors, (373), 117 states have call successors, (373) [2023-11-19 04:46:30,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1152 transitions. [2023-11-19 04:46:30,038 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1152 transitions. Word has length 143 [2023-11-19 04:46:30,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:30,039 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1152 transitions. [2023-11-19 04:46:30,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-19 04:46:30,039 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1152 transitions. [2023-11-19 04:46:30,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-19 04:46:30,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:30,043 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:46:30,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 04:46:30,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 04:46:30,269 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:46:30,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:30,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1373217652, now seen corresponding path program 1 times [2023-11-19 04:46:30,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:30,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583146610] [2023-11-19 04:46:30,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:30,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:30,410 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2023-11-19 04:46:30,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:30,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583146610] [2023-11-19 04:46:30,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583146610] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:46:30,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758555567] [2023-11-19 04:46:30,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:30,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:46:30,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:46:30,412 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:46:30,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 04:46:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:30,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:46:30,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:46:30,575 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2023-11-19 04:46:30,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:46:30,786 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2023-11-19 04:46:30,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758555567] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:46:30,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [864700862] [2023-11-19 04:46:30,791 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-11-19 04:46:30,792 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:46:30,793 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-19 04:46:30,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:46:30,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-19 04:46:30,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841986376] [2023-11-19 04:46:30,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:46:30,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 04:46:30,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:30,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 04:46:30,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-19 04:46:30,797 INFO L87 Difference]: Start difference. First operand 816 states and 1152 transitions. Second operand has 12 states, 11 states have (on average 4.090909090909091) internal successors, (45), 12 states have internal predecessors, (45), 1 states have call successors, (5), 1 states have call predecessors, (5), 6 states have return successors, (8), 6 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-19 04:46:30,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:30,896 INFO L93 Difference]: Finished difference Result 925 states and 1291 transitions. [2023-11-19 04:46:30,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 04:46:30,896 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.090909090909091) internal successors, (45), 12 states have internal predecessors, (45), 1 states have call successors, (5), 1 states have call predecessors, (5), 6 states have return successors, (8), 6 states have call predecessors, (8), 1 states have call successors, (8) Word has length 144 [2023-11-19 04:46:30,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:30,908 INFO L225 Difference]: With dead ends: 925 [2023-11-19 04:46:30,908 INFO L226 Difference]: Without dead ends: 860 [2023-11-19 04:46:30,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-19 04:46:30,912 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:30,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 137 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:46:30,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2023-11-19 04:46:31,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 860. [2023-11-19 04:46:31,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 663 states have (on average 1.0422322775263952) internal successors, (691), 640 states have internal predecessors, (691), 118 states have call successors, (118), 88 states have call predecessors, (118), 77 states have return successors, (382), 131 states have call predecessors, (382), 117 states have call successors, (382) [2023-11-19 04:46:31,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1191 transitions. [2023-11-19 04:46:31,030 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1191 transitions. Word has length 144 [2023-11-19 04:46:31,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:31,030 INFO L495 AbstractCegarLoop]: Abstraction has 860 states and 1191 transitions. [2023-11-19 04:46:31,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.090909090909091) internal successors, (45), 12 states have internal predecessors, (45), 1 states have call successors, (5), 1 states have call predecessors, (5), 6 states have return successors, (8), 6 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-19 04:46:31,031 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1191 transitions. [2023-11-19 04:46:31,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-11-19 04:46:31,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:31,038 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:46:31,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 04:46:31,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:46:31,252 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:46:31,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:31,252 INFO L85 PathProgramCache]: Analyzing trace with hash -850759282, now seen corresponding path program 2 times [2023-11-19 04:46:31,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:31,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669293159] [2023-11-19 04:46:31,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:31,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:31,553 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2023-11-19 04:46:31,553 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:31,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669293159] [2023-11-19 04:46:31,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669293159] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:46:31,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135082939] [2023-11-19 04:46:31,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:46:31,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:46:31,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:46:31,555 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:46:31,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 04:46:31,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-19 04:46:31,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:46:31,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 04:46:31,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:46:31,739 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2023-11-19 04:46:31,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:46:32,584 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2023-11-19 04:46:32,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135082939] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:46:32,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [410207163] [2023-11-19 04:46:32,588 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-11-19 04:46:32,588 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:46:32,592 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-19 04:46:32,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:46:32,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-11-19 04:46:32,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511985471] [2023-11-19 04:46:32,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:46:32,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 04:46:32,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:32,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 04:46:32,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2023-11-19 04:46:32,597 INFO L87 Difference]: Start difference. First operand 860 states and 1191 transitions. Second operand has 24 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 24 states have internal predecessors, (81), 1 states have call successors, (5), 1 states have call predecessors, (5), 12 states have return successors, (14), 12 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-19 04:46:32,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:32,743 INFO L93 Difference]: Finished difference Result 1089 states and 1455 transitions. [2023-11-19 04:46:32,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-19 04:46:32,744 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 24 states have internal predecessors, (81), 1 states have call successors, (5), 1 states have call predecessors, (5), 12 states have return successors, (14), 12 states have call predecessors, (14), 1 states have call successors, (14) Word has length 180 [2023-11-19 04:46:32,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:32,752 INFO L225 Difference]: With dead ends: 1089 [2023-11-19 04:46:32,752 INFO L226 Difference]: Without dead ends: 902 [2023-11-19 04:46:32,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2023-11-19 04:46:32,754 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:32,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 143 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:46:32,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2023-11-19 04:46:32,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 902. [2023-11-19 04:46:32,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 699 states have (on average 1.040057224606581) internal successors, (727), 676 states have internal predecessors, (727), 118 states have call successors, (118), 88 states have call predecessors, (118), 83 states have return successors, (388), 137 states have call predecessors, (388), 117 states have call successors, (388) [2023-11-19 04:46:32,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1233 transitions. [2023-11-19 04:46:32,852 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1233 transitions. Word has length 180 [2023-11-19 04:46:32,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:32,853 INFO L495 AbstractCegarLoop]: Abstraction has 902 states and 1233 transitions. [2023-11-19 04:46:32,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 24 states have internal predecessors, (81), 1 states have call successors, (5), 1 states have call predecessors, (5), 12 states have return successors, (14), 12 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-19 04:46:32,854 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1233 transitions. [2023-11-19 04:46:32,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-19 04:46:32,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:32,860 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1] [2023-11-19 04:46:32,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 04:46:33,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 04:46:33,076 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:46:33,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:33,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1284933891, now seen corresponding path program 4 times [2023-11-19 04:46:33,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:33,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081608650] [2023-11-19 04:46:33,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:33,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:36,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:36,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:36,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081608650] [2023-11-19 04:46:36,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081608650] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:46:36,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759442311] [2023-11-19 04:46:36,063 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-19 04:46:36,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:46:36,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:46:36,064 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:46:36,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 04:46:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:36,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 93 conjunts are in the unsatisfiable core [2023-11-19 04:46:36,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:46:36,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:36,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:46:38,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:38,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759442311] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:46:38,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1391697373] [2023-11-19 04:46:38,945 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-19 04:46:38,945 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:46:38,945 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-19 04:46:38,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:46:38,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95 [2023-11-19 04:46:38,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852861401] [2023-11-19 04:46:38,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:46:38,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-11-19 04:46:38,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:38,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-11-19 04:46:38,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2023-11-19 04:46:38,957 INFO L87 Difference]: Start difference. First operand 902 states and 1233 transitions. Second operand has 96 states, 95 states have (on average 2.9473684210526314) internal successors, (280), 96 states have internal predecessors, (280), 47 states have call successors, (47), 47 states have call predecessors, (47), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:46,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:46,118 INFO L93 Difference]: Finished difference Result 5611 states and 7227 transitions. [2023-11-19 04:46:46,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-11-19 04:46:46,119 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 2.9473684210526314) internal successors, (280), 96 states have internal predecessors, (280), 47 states have call successors, (47), 47 states have call predecessors, (47), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2023-11-19 04:46:46,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:46,160 INFO L225 Difference]: With dead ends: 5611 [2023-11-19 04:46:46,160 INFO L226 Difference]: Without dead ends: 5610 [2023-11-19 04:46:46,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4408 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=5642, Invalid=14380, Unknown=0, NotChecked=0, Total=20022 [2023-11-19 04:46:46,172 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 1914 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1914 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 1728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:46,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1914 Valid, 1261 Invalid, 1728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-19 04:46:46,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5610 states. [2023-11-19 04:46:46,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5610 to 1730. [2023-11-19 04:46:46,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1323 states have (on average 1.0393046107331823) internal successors, (1375), 1276 states have internal predecessors, (1375), 250 states have call successors, (250), 184 states have call predecessors, (250), 155 states have return successors, (1474), 269 states have call predecessors, (1474), 249 states have call successors, (1474) [2023-11-19 04:46:46,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 3099 transitions. [2023-11-19 04:46:46,450 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 3099 transitions. Word has length 161 [2023-11-19 04:46:46,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:46,451 INFO L495 AbstractCegarLoop]: Abstraction has 1730 states and 3099 transitions. [2023-11-19 04:46:46,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 2.9473684210526314) internal successors, (280), 96 states have internal predecessors, (280), 47 states have call successors, (47), 47 states have call predecessors, (47), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:46,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 3099 transitions. [2023-11-19 04:46:46,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-11-19 04:46:46,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:46,464 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 15, 15, 11, 11, 11, 11, 10, 10, 10, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:46:46,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 04:46:46,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:46:46,680 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 04:46:46,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:46,680 INFO L85 PathProgramCache]: Analyzing trace with hash -814360530, now seen corresponding path program 3 times [2023-11-19 04:46:46,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:46,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17957327] [2023-11-19 04:46:46,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:46,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:47,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1667 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 1302 trivial. 0 not checked. [2023-11-19 04:46:47,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:47,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17957327] [2023-11-19 04:46:47,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17957327] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:46:47,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705705453] [2023-11-19 04:46:47,444 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 04:46:47,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:46:47,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:46:47,448 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:46:47,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_269f0109-9555-40fd-bf85-66e847a75a0b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 04:46:47,593 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 04:46:47,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:46:47,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-19 04:46:47,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:46:48,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1667 backedges. 505 proven. 578 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2023-11-19 04:46:48,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:46:57,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1667 backedges. 505 proven. 789 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2023-11-19 04:46:57,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705705453] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:46:57,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [39083851] [2023-11-19 04:46:57,225 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-11-19 04:46:57,225 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:46:57,225 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-19 04:46:57,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:46:57,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 34, 47] total 87 [2023-11-19 04:46:57,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943357087] [2023-11-19 04:46:57,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:46:57,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2023-11-19 04:46:57,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:57,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2023-11-19 04:46:57,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=692, Invalid=6790, Unknown=0, NotChecked=0, Total=7482 [2023-11-19 04:46:57,234 INFO L87 Difference]: Start difference. First operand 1730 states and 3099 transitions. Second operand has 87 states, 85 states have (on average 3.388235294117647) internal successors, (288), 71 states have internal predecessors, (288), 36 states have call successors, (40), 15 states have call predecessors, (40), 28 states have return successors, (48), 29 states have call predecessors, (48), 22 states have call successors, (48)