./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 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_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje --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 b879e9957df47aa9212d1bcb19c90b87b865d954f1a44f3c044747ce0553d2eb --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:28:28,605 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:28:28,711 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-09 05:28:28,717 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:28:28,718 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:28:28,747 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:28:28,747 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:28:28,748 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:28:28,749 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:28:28,749 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:28:28,750 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:28:28,750 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:28:28,751 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:28:28,751 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:28:28,752 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:28:28,752 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:28:28,753 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:28:28,753 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:28:28,754 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:28:28,754 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:28:28,755 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:28:28,760 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:28:28,761 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:28:28,761 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:28:28,762 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:28:28,762 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:28:28,762 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:28:28,766 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:28:28,766 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:28:28,767 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:28:28,767 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:28:28,767 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:28:28,768 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 05:28:28,768 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 05:28:28,769 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:28:28,769 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:28:28,769 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:28:28,771 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:28:28,771 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:28:28,772 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:28:28,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:28:28,773 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:28:28,774 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:28:28,774 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:28:28,775 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:28:28,775 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:28:28,775 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:28:28,776 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:28:28,776 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:28:28,776 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_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b879e9957df47aa9212d1bcb19c90b87b865d954f1a44f3c044747ce0553d2eb [2024-11-09 05:28:29,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:28:29,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:28:29,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:28:29,196 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:28:29,197 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:28:29,198 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound10.i Unable to find full path for "g++" [2024-11-09 05:28:31,456 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:28:31,732 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:28:31,733 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound10.i [2024-11-09 05:28:31,743 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/data/aefd3ed5b/aa98900bc0784c4bb929e6843d4b393c/FLAG4918c20df [2024-11-09 05:28:31,760 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/data/aefd3ed5b/aa98900bc0784c4bb929e6843d4b393c [2024-11-09 05:28:31,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:28:31,764 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:28:31,766 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:28:31,766 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:28:31,773 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:28:31,774 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:28:31" (1/1) ... [2024-11-09 05:28:31,776 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@310a5194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:31, skipping insertion in model container [2024-11-09 05:28:31,776 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:28:31" (1/1) ... [2024-11-09 05:28:31,802 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:28:32,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:28:32,080 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:28:32,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:28:32,123 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:28:32,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:32 WrapperNode [2024-11-09 05:28:32,124 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:28:32,129 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:28:32,129 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:28:32,130 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:28:32,139 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:32" (1/1) ... [2024-11-09 05:28:32,150 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:32" (1/1) ... [2024-11-09 05:28:32,170 INFO L138 Inliner]: procedures = 16, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2024-11-09 05:28:32,173 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:28:32,174 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:28:32,174 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:28:32,174 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:28:32,182 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:32" (1/1) ... [2024-11-09 05:28:32,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:32" (1/1) ... [2024-11-09 05:28:32,183 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:32" (1/1) ... [2024-11-09 05:28:32,184 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:32" (1/1) ... [2024-11-09 05:28:32,187 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:32" (1/1) ... [2024-11-09 05:28:32,192 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:32" (1/1) ... [2024-11-09 05:28:32,193 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:32" (1/1) ... [2024-11-09 05:28:32,194 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:32" (1/1) ... [2024-11-09 05:28:32,196 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:28:32,197 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:28:32,197 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:28:32,197 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:28:32,199 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:32" (1/1) ... [2024-11-09 05:28:32,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:28:32,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:28:32,243 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:28:32,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:28:32,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:28:32,286 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 05:28:32,287 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 05:28:32,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:28:32,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:28:32,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:28:32,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 05:28:32,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 05:28:32,380 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:28:32,384 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:28:32,670 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-09 05:28:32,671 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:28:32,754 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:28:32,755 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 05:28:32,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:28:32 BoogieIcfgContainer [2024-11-09 05:28:32,755 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:28:32,759 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:28:32,761 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:28:32,767 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:28:32,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:28:31" (1/3) ... [2024-11-09 05:28:32,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8822c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:28:32, skipping insertion in model container [2024-11-09 05:28:32,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:32" (2/3) ... [2024-11-09 05:28:32,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8822c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:28:32, skipping insertion in model container [2024-11-09 05:28:32,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:28:32" (3/3) ... [2024-11-09 05:28:32,774 INFO L112 eAbstractionObserver]: Analyzing ICFG divbin_unwindbound10.i [2024-11-09 05:28:32,800 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:28:32,801 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-09 05:28:32,911 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:28:32,926 INFO L333 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, 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;@58e92958, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:28:32,926 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 05:28:32,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 19 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 05:28:32,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 05:28:32,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:32,945 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:32,946 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-09 05:28:32,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:32,958 INFO L85 PathProgramCache]: Analyzing trace with hash 645110086, now seen corresponding path program 1 times [2024-11-09 05:28:32,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:32,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566129141] [2024-11-09 05:28:32,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:32,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:33,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:28:33,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:33,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566129141] [2024-11-09 05:28:33,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566129141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:33,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:28:33,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:28:33,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473241059] [2024-11-09 05:28:33,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:33,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:28:33,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:33,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:28:33,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:28:33,419 INFO L87 Difference]: Start difference. First operand has 26 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 19 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) 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, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:28:33,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:33,555 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2024-11-09 05:28:33,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:28:33,561 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, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 10 [2024-11-09 05:28:33,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:33,570 INFO L225 Difference]: With dead ends: 45 [2024-11-09 05:28:33,570 INFO L226 Difference]: Without dead ends: 27 [2024-11-09 05:28:33,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:28:33,581 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 7 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:33,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 57 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:28:33,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-09 05:28:33,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-09 05:28:33,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 05:28:33,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-11-09 05:28:33,634 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 10 [2024-11-09 05:28:33,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:33,636 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-11-09 05:28:33,636 INFO L472 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, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:28:33,637 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-11-09 05:28:33,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 05:28:33,640 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:33,640 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:33,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:28:33,641 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-09 05:28:33,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:33,644 INFO L85 PathProgramCache]: Analyzing trace with hash 2026622410, now seen corresponding path program 1 times [2024-11-09 05:28:33,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:33,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042705510] [2024-11-09 05:28:33,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:33,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:33,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:28:33,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:33,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042705510] [2024-11-09 05:28:33,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042705510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:33,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:28:33,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:28:33,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318941712] [2024-11-09 05:28:33,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:33,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:28:33,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:33,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:28:33,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:28:33,870 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:28:34,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:34,133 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2024-11-09 05:28:34,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:28:34,134 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2024-11-09 05:28:34,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:34,136 INFO L225 Difference]: With dead ends: 43 [2024-11-09 05:28:34,138 INFO L226 Difference]: Without dead ends: 42 [2024-11-09 05:28:34,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:28:34,141 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 20 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:34,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 63 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:28:34,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-09 05:28:34,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2024-11-09 05:28:34,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.32) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 05:28:34,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2024-11-09 05:28:34,157 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 15 [2024-11-09 05:28:34,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:34,157 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2024-11-09 05:28:34,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:28:34,160 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2024-11-09 05:28:34,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 05:28:34,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:34,161 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:34,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:28:34,162 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-09 05:28:34,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:34,163 INFO L85 PathProgramCache]: Analyzing trace with hash 2026623692, now seen corresponding path program 1 times [2024-11-09 05:28:34,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:34,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214214016] [2024-11-09 05:28:34,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:34,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:34,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:28:34,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:34,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214214016] [2024-11-09 05:28:34,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214214016] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:28:34,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485310749] [2024-11-09 05:28:34,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:34,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:28:34,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:28:34,385 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:28:34,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:28:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:34,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:28:34,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:28:34,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:28:34,599 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:28:34,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485310749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:34,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:28:34,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-09 05:28:34,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036982317] [2024-11-09 05:28:34,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:34,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:28:34,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:34,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:28:34,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-09 05:28:34,605 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:28:34,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:34,676 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2024-11-09 05:28:34,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:28:34,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2024-11-09 05:28:34,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:34,678 INFO L225 Difference]: With dead ends: 44 [2024-11-09 05:28:34,678 INFO L226 Difference]: Without dead ends: 43 [2024-11-09 05:28:34,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:28:34,680 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 18 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:34,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 34 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:28:34,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-09 05:28:34,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2024-11-09 05:28:34,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.28) internal successors, (32), 27 states have internal predecessors, (32), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 05:28:34,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2024-11-09 05:28:34,691 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 15 [2024-11-09 05:28:34,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:34,691 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2024-11-09 05:28:34,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:28:34,692 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2024-11-09 05:28:34,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 05:28:34,693 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:34,693 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:34,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:28:34,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:28:34,895 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-09 05:28:34,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:34,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1599214667, now seen corresponding path program 1 times [2024-11-09 05:28:34,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:34,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367786198] [2024-11-09 05:28:34,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:34,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:35,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:28:35,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:35,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367786198] [2024-11-09 05:28:35,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367786198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:35,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:28:35,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:28:35,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491017684] [2024-11-09 05:28:35,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:35,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:28:35,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:35,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:28:35,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:28:35,066 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:28:35,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:35,177 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2024-11-09 05:28:35,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 05:28:35,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-11-09 05:28:35,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:35,179 INFO L225 Difference]: With dead ends: 44 [2024-11-09 05:28:35,180 INFO L226 Difference]: Without dead ends: 43 [2024-11-09 05:28:35,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:28:35,181 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 13 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:35,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 55 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:28:35,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-09 05:28:35,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2024-11-09 05:28:35,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 28 states have (on average 1.25) internal successors, (35), 30 states have internal predecessors, (35), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 05:28:35,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2024-11-09 05:28:35,198 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 16 [2024-11-09 05:28:35,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:35,201 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2024-11-09 05:28:35,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:28:35,201 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2024-11-09 05:28:35,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 05:28:35,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:35,203 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:35,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:28:35,204 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-09 05:28:35,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:35,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1599174945, now seen corresponding path program 1 times [2024-11-09 05:28:35,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:35,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93545733] [2024-11-09 05:28:35,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:35,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:35,337 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:28:35,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:35,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93545733] [2024-11-09 05:28:35,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93545733] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:28:35,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638915522] [2024-11-09 05:28:35,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:35,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:28:35,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:28:35,342 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:28:35,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:28:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:35,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:28:35,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:28:35,442 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:28:35,442 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:28:35,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638915522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:35,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:28:35,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-09 05:28:35,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502940366] [2024-11-09 05:28:35,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:35,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:28:35,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:35,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:28:35,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-09 05:28:35,445 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:28:35,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:35,536 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2024-11-09 05:28:35,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:28:35,537 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-11-09 05:28:35,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:35,538 INFO L225 Difference]: With dead ends: 43 [2024-11-09 05:28:35,539 INFO L226 Difference]: Without dead ends: 42 [2024-11-09 05:28:35,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:28:35,541 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:35,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 49 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:28:35,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-09 05:28:35,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2024-11-09 05:28:35,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 29 states have internal predecessors, (34), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 05:28:35,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2024-11-09 05:28:35,551 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 16 [2024-11-09 05:28:35,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:35,551 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2024-11-09 05:28:35,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:28:35,552 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2024-11-09 05:28:35,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 05:28:35,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:35,553 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:35,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 05:28:35,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:28:35,754 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-09 05:28:35,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:35,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1243493167, now seen corresponding path program 1 times [2024-11-09 05:28:35,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:35,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369671004] [2024-11-09 05:28:35,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:35,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:28:35,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:35,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369671004] [2024-11-09 05:28:35,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369671004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:28:35,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961315181] [2024-11-09 05:28:35,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:35,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:28:35,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:28:35,902 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:28:35,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:28:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:35,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:28:35,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:28:36,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:28:36,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:28:36,151 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:28:36,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961315181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:28:36,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [426996942] [2024-11-09 05:28:36,179 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2024-11-09 05:28:36,179 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:28:36,184 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:28:36,190 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:28:36,191 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:28:37,088 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2024-11-09 05:28:37,092 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:28:37,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [426996942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:37,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:28:37,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [7, 5, 6] total 24 [2024-11-09 05:28:37,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535354495] [2024-11-09 05:28:37,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:37,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 05:28:37,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:37,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 05:28:37,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2024-11-09 05:28:37,484 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:28:37,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:37,947 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2024-11-09 05:28:37,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 05:28:37,948 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-11-09 05:28:37,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:37,950 INFO L225 Difference]: With dead ends: 50 [2024-11-09 05:28:37,951 INFO L226 Difference]: Without dead ends: 49 [2024-11-09 05:28:37,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2024-11-09 05:28:37,952 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 25 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:37,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 85 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:28:37,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-09 05:28:37,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2024-11-09 05:28:37,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 30 states have (on average 1.2) internal successors, (36), 31 states have internal predecessors, (36), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 05:28:37,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2024-11-09 05:28:37,965 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 19 [2024-11-09 05:28:37,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:37,965 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2024-11-09 05:28:37,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:28:37,965 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2024-11-09 05:28:37,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 05:28:37,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:37,966 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:37,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 05:28:38,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 05:28:38,168 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-09 05:28:38,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:38,169 INFO L85 PathProgramCache]: Analyzing trace with hash 106417550, now seen corresponding path program 1 times [2024-11-09 05:28:38,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:38,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018316631] [2024-11-09 05:28:38,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:38,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:38,278 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:28:38,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:38,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018316631] [2024-11-09 05:28:38,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018316631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:28:38,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581531534] [2024-11-09 05:28:38,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:38,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:28:38,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:28:38,281 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:28:38,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:28:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:38,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:28:38,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:28:38,380 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:28:38,380 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:28:38,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:28:38,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581531534] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:28:38,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1100097043] [2024-11-09 05:28:38,473 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-09 05:28:38,473 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:28:38,474 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:28:38,474 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:28:38,474 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:28:39,019 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2024-11-09 05:28:39,021 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:28:39,464 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1102#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~q~0#1| 0) (= ~counter~0 2147483647))' at error location [2024-11-09 05:28:39,464 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:28:39,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:28:39,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 6] total 13 [2024-11-09 05:28:39,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638921412] [2024-11-09 05:28:39,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:28:39,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 05:28:39,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:39,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 05:28:39,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2024-11-09 05:28:39,480 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 05:28:39,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:39,678 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2024-11-09 05:28:39,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 05:28:39,678 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 20 [2024-11-09 05:28:39,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:39,679 INFO L225 Difference]: With dead ends: 75 [2024-11-09 05:28:39,679 INFO L226 Difference]: Without dead ends: 63 [2024-11-09 05:28:39,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=174, Invalid=756, Unknown=0, NotChecked=0, Total=930 [2024-11-09 05:28:39,681 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 33 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:39,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 84 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:28:39,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-09 05:28:39,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 53. [2024-11-09 05:28:39,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 45 states have internal predecessors, (52), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 05:28:39,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2024-11-09 05:28:39,692 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 20 [2024-11-09 05:28:39,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:39,692 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2024-11-09 05:28:39,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 05:28:39,693 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2024-11-09 05:28:39,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 05:28:39,694 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:39,694 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:39,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 05:28:39,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:28:39,895 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-09 05:28:39,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:39,895 INFO L85 PathProgramCache]: Analyzing trace with hash 106469380, now seen corresponding path program 1 times [2024-11-09 05:28:39,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:39,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270930304] [2024-11-09 05:28:39,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:39,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:40,013 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:28:40,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:40,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270930304] [2024-11-09 05:28:40,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270930304] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:28:40,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244623991] [2024-11-09 05:28:40,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:40,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:28:40,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:28:40,016 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:28:40,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 05:28:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:40,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:28:40,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:28:40,165 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:28:40,165 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:28:40,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244623991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:40,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:28:40,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 13 [2024-11-09 05:28:40,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119954215] [2024-11-09 05:28:40,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:40,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:28:40,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:40,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:28:40,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-09 05:28:40,168 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:28:40,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:40,246 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2024-11-09 05:28:40,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:28:40,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-11-09 05:28:40,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:40,248 INFO L225 Difference]: With dead ends: 53 [2024-11-09 05:28:40,248 INFO L226 Difference]: Without dead ends: 52 [2024-11-09 05:28:40,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-09 05:28:40,249 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:40,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 27 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:28:40,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-09 05:28:40,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 42. [2024-11-09 05:28:40,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 states have internal predecessors, (42), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 05:28:40,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2024-11-09 05:28:40,267 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 20 [2024-11-09 05:28:40,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:40,267 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2024-11-09 05:28:40,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:28:40,267 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2024-11-09 05:28:40,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 05:28:40,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:40,268 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:40,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 05:28:40,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:28:40,469 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-09 05:28:40,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:40,469 INFO L85 PathProgramCache]: Analyzing trace with hash -994416453, now seen corresponding path program 1 times [2024-11-09 05:28:40,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:40,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969218944] [2024-11-09 05:28:40,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:40,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:40,587 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:28:40,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:40,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969218944] [2024-11-09 05:28:40,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969218944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:28:40,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529213781] [2024-11-09 05:28:40,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:40,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:28:40,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:28:40,590 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:28:40,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 05:28:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:40,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:28:40,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:28:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:28:40,737 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:28:40,860 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:28:40,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529213781] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:28:40,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [102594567] [2024-11-09 05:28:40,863 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-09 05:28:40,863 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:28:40,864 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:28:40,864 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:28:40,864 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:28:41,316 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2024-11-09 05:28:41,318 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:28:41,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [102594567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:41,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:28:41,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8, 6, 6] total 29 [2024-11-09 05:28:41,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037946573] [2024-11-09 05:28:41,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:41,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 05:28:41,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:41,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 05:28:41,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=686, Unknown=0, NotChecked=0, Total=870 [2024-11-09 05:28:41,853 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:28:42,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:42,164 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2024-11-09 05:28:42,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 05:28:42,164 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-11-09 05:28:42,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:42,165 INFO L225 Difference]: With dead ends: 46 [2024-11-09 05:28:42,165 INFO L226 Difference]: Without dead ends: 45 [2024-11-09 05:28:42,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=240, Invalid=882, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 05:28:42,167 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 18 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:42,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 27 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:28:42,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-09 05:28:42,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2024-11-09 05:28:42,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 states have internal predecessors, (42), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 05:28:42,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2024-11-09 05:28:42,176 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 21 [2024-11-09 05:28:42,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:42,176 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2024-11-09 05:28:42,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:28:42,176 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2024-11-09 05:28:42,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 05:28:42,177 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:42,177 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:42,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 05:28:42,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-09 05:28:42,382 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-09 05:28:42,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:42,383 INFO L85 PathProgramCache]: Analyzing trace with hash 708428467, now seen corresponding path program 1 times [2024-11-09 05:28:42,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:42,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795534231] [2024-11-09 05:28:42,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:42,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:42,525 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:28:42,525 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:42,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795534231] [2024-11-09 05:28:42,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795534231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:28:42,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442821646] [2024-11-09 05:28:42,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:42,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:28:42,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:28:42,528 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:28:42,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 05:28:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:42,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:28:42,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:28:42,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:28:42,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:28:42,845 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:28:42,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442821646] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:28:42,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [435137325] [2024-11-09 05:28:42,848 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-09 05:28:42,849 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:28:42,850 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:28:42,850 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:28:42,850 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:28:43,338 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 42 for LOIs [2024-11-09 05:28:43,353 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2024-11-09 05:28:43,355 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:28:44,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [435137325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:44,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:28:44,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [8, 6, 6] total 32 [2024-11-09 05:28:44,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312869890] [2024-11-09 05:28:44,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:44,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 05:28:44,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:44,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 05:28:44,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=800, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 05:28:44,490 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 05:28:44,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:44,805 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2024-11-09 05:28:44,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 05:28:44,806 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 24 [2024-11-09 05:28:44,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:44,807 INFO L225 Difference]: With dead ends: 59 [2024-11-09 05:28:44,807 INFO L226 Difference]: Without dead ends: 42 [2024-11-09 05:28:44,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=269, Invalid=853, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 05:28:44,809 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:44,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:28:44,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-09 05:28:44,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-09 05:28:44,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 05:28:44,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2024-11-09 05:28:44,817 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 24 [2024-11-09 05:28:44,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:44,818 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2024-11-09 05:28:44,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 05:28:44,818 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2024-11-09 05:28:44,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 05:28:44,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:44,824 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:44,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 05:28:45,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 05:28:45,025 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-09 05:28:45,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:45,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1712576953, now seen corresponding path program 1 times [2024-11-09 05:28:45,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:45,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409355948] [2024-11-09 05:28:45,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:45,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:45,237 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:28:45,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:45,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409355948] [2024-11-09 05:28:45,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409355948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:28:45,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54201739] [2024-11-09 05:28:45,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:45,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:28:45,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:28:45,241 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:28:45,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 05:28:45,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:45,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:28:45,306 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:28:45,467 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:28:45,467 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:28:45,673 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:28:45,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54201739] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:28:45,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [45719497] [2024-11-09 05:28:45,676 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-09 05:28:45,677 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:28:45,677 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:28:45,678 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:28:45,678 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:28:46,380 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 37 for LOIs [2024-11-09 05:28:46,390 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2024-11-09 05:28:46,396 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:28:47,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [45719497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:47,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:28:47,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [10, 8, 8] total 40 [2024-11-09 05:28:47,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170281336] [2024-11-09 05:28:47,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:47,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 05:28:47,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:47,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 05:28:47,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1325, Unknown=0, NotChecked=0, Total=1640 [2024-11-09 05:28:47,324 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 18 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 05:28:47,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:47,868 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2024-11-09 05:28:47,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 05:28:47,869 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2024-11-09 05:28:47,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:47,870 INFO L225 Difference]: With dead ends: 51 [2024-11-09 05:28:47,870 INFO L226 Difference]: Without dead ends: 39 [2024-11-09 05:28:47,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=416, Invalid=1746, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 05:28:47,872 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 27 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:47,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 26 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:28:47,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-09 05:28:47,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-09 05:28:47,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 05:28:47,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2024-11-09 05:28:47,880 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 29 [2024-11-09 05:28:47,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:47,880 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2024-11-09 05:28:47,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 05:28:47,881 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2024-11-09 05:28:47,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 05:28:47,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:47,882 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:47,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 05:28:48,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 05:28:48,086 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-09 05:28:48,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:48,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1028826156, now seen corresponding path program 2 times [2024-11-09 05:28:48,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:48,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035203943] [2024-11-09 05:28:48,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:48,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:48,301 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:28:48,301 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:48,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035203943] [2024-11-09 05:28:48,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035203943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:28:48,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525944276] [2024-11-09 05:28:48,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:28:48,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:28:48,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:28:48,304 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:28:48,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 05:28:48,349 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 05:28:48,349 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:28:48,350 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:28:48,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:28:48,425 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 05:28:48,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:28:48,547 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 05:28:48,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525944276] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:28:48,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1544485048] [2024-11-09 05:28:48,550 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-09 05:28:48,550 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:28:48,550 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:28:48,551 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:28:48,551 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:28:48,908 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2024-11-09 05:28:48,910 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:28:49,491 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2657#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~q~0#1| 0) (= ~counter~0 2147483647))' at error location [2024-11-09 05:28:49,491 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:28:49,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:28:49,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 23 [2024-11-09 05:28:49,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447285473] [2024-11-09 05:28:49,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:28:49,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 05:28:49,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:49,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 05:28:49,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=966, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 05:28:49,494 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 05:28:49,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:49,877 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2024-11-09 05:28:49,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 05:28:49,878 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2024-11-09 05:28:49,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:49,881 INFO L225 Difference]: With dead ends: 64 [2024-11-09 05:28:49,881 INFO L226 Difference]: Without dead ends: 55 [2024-11-09 05:28:49,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 77 SyntacticMatches, 6 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=469, Invalid=1883, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 05:28:49,883 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 82 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:49,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 51 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:28:49,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-09 05:28:49,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-11-09 05:28:49,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 47 states have internal predecessors, (49), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 05:28:49,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2024-11-09 05:28:49,903 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 35 [2024-11-09 05:28:49,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:49,905 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2024-11-09 05:28:49,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 05:28:49,905 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2024-11-09 05:28:49,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-09 05:28:49,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:49,910 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:49,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 05:28:50,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 05:28:50,111 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-09 05:28:50,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:50,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1000129290, now seen corresponding path program 1 times [2024-11-09 05:28:50,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:50,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753399905] [2024-11-09 05:28:50,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:50,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:50,417 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 05:28:50,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:50,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753399905] [2024-11-09 05:28:50,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753399905] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:28:50,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172250477] [2024-11-09 05:28:50,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:50,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:28:50,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:28:50,420 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:28:50,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 05:28:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:50,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 05:28:50,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:28:50,587 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 05:28:50,587 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:28:50,866 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 05:28:50,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172250477] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:28:50,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1569234388] [2024-11-09 05:28:50,872 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-09 05:28:50,874 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:28:50,874 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:28:50,876 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:28:50,876 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:28:51,230 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2024-11-09 05:28:51,231 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:28:51,787 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3213#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~q~0#1| 0) (= ~counter~0 2147483647))' at error location [2024-11-09 05:28:51,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:28:51,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:28:51,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 14] total 25 [2024-11-09 05:28:51,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460830587] [2024-11-09 05:28:51,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:28:51,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 05:28:51,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:51,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 05:28:51,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1136, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 05:28:51,790 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand has 25 states, 25 states have (on average 2.84) internal successors, (71), 25 states have internal predecessors, (71), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-09 05:28:52,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:52,185 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2024-11-09 05:28:52,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-09 05:28:52,186 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.84) internal successors, (71), 25 states have internal predecessors, (71), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 56 [2024-11-09 05:28:52,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:52,187 INFO L225 Difference]: With dead ends: 100 [2024-11-09 05:28:52,187 INFO L226 Difference]: Without dead ends: 80 [2024-11-09 05:28:52,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 132 SyntacticMatches, 13 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1442 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=669, Invalid=2411, Unknown=0, NotChecked=0, Total=3080 [2024-11-09 05:28:52,189 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 64 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:52,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 82 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:28:52,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-09 05:28:52,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-11-09 05:28:52,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 72 states have internal predecessors, (74), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 05:28:52,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2024-11-09 05:28:52,200 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 56 [2024-11-09 05:28:52,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:52,200 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2024-11-09 05:28:52,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.84) internal successors, (71), 25 states have internal predecessors, (71), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-09 05:28:52,201 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2024-11-09 05:28:52,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-09 05:28:52,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:52,203 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:52,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 05:28:52,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 05:28:52,407 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-09 05:28:52,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:52,407 INFO L85 PathProgramCache]: Analyzing trace with hash -318457200, now seen corresponding path program 2 times [2024-11-09 05:28:52,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:52,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515143197] [2024-11-09 05:28:52,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:52,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:52,540 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-09 05:28:52,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:52,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515143197] [2024-11-09 05:28:52,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515143197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:52,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:28:52,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:28:52,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625138675] [2024-11-09 05:28:52,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:52,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:28:52,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:52,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:28:52,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:28:52,543 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 05:28:52,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:52,578 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2024-11-09 05:28:52,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:28:52,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 81 [2024-11-09 05:28:52,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:52,580 INFO L225 Difference]: With dead ends: 80 [2024-11-09 05:28:52,580 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 05:28:52,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:28:52,581 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:52,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 31 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:28:52,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 05:28:52,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 05:28:52,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:28:52,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 05:28:52,583 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 81 [2024-11-09 05:28:52,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:52,583 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 05:28:52,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 05:28:52,584 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 05:28:52,584 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 05:28:52,587 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2024-11-09 05:28:52,587 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2024-11-09 05:28:52,588 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2024-11-09 05:28:52,588 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2024-11-09 05:28:52,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 05:28:52,592 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:52,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 05:28:53,183 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 05:28:53,198 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-11-09 05:28:53,199 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-11-09 05:28:53,213 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-11-09 05:28:53,213 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-11-09 05:28:53,213 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] [2024-11-09 05:28:53,214 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-11-09 05:28:53,214 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] [2024-11-09 05:28:53,214 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-11-09 05:28:53,214 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] [2024-11-09 05:28:53,214 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-11-09 05:28:53,214 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] [2024-11-09 05:28:53,215 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-11-09 05:28:53,215 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] [2024-11-09 05:28:53,215 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int [2024-11-09 05:28:53,215 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int,GLOBAL] [2024-11-09 05:28:53,215 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int,GLOBAL],[IntegerLiteral[1]]] [2024-11-09 05:28:53,216 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int [2024-11-09 05:28:53,216 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int,GLOBAL] [2024-11-09 05:28:53,216 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int,GLOBAL],[IntegerLiteral[1]]] [2024-11-09 05:28:53,216 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-11-09 05:28:53,216 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-11-09 05:28:53,217 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] [2024-11-09 05:28:53,217 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-11-09 05:28:53,217 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] [2024-11-09 05:28:53,217 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-11-09 05:28:53,217 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] [2024-11-09 05:28:53,218 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-11-09 05:28:53,218 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] [2024-11-09 05:28:53,218 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-11-09 05:28:53,218 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] [2024-11-09 05:28:53,218 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int [2024-11-09 05:28:53,218 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int,GLOBAL] [2024-11-09 05:28:53,219 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int,GLOBAL],[IntegerLiteral[1]]] [2024-11-09 05:28:53,219 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int [2024-11-09 05:28:53,219 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int,GLOBAL] [2024-11-09 05:28:53,219 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int,GLOBAL],[IntegerLiteral[1]]] [2024-11-09 05:28:53,224 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-11-09 05:28:53,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:28:53 BoogieIcfgContainer [2024-11-09 05:28:53,226 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 05:28:53,226 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 05:28:53,226 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 05:28:53,227 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 05:28:53,227 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:28:32" (3/4) ... [2024-11-09 05:28:53,230 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 05:28:53,234 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-09 05:28:53,235 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-09 05:28:53,239 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2024-11-09 05:28:53,239 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-09 05:28:53,239 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-09 05:28:53,240 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 05:28:53,349 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 05:28:53,349 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/witness.yml [2024-11-09 05:28:53,349 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 05:28:53,351 INFO L158 Benchmark]: Toolchain (without parser) took 21586.78ms. Allocated memory was 165.7MB in the beginning and 346.0MB in the end (delta: 180.4MB). Free memory was 135.4MB in the beginning and 233.8MB in the end (delta: -98.4MB). Peak memory consumption was 85.1MB. Max. memory is 16.1GB. [2024-11-09 05:28:53,351 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 109.1MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:28:53,352 INFO L158 Benchmark]: CACSL2BoogieTranslator took 362.50ms. Allocated memory is still 165.7MB. Free memory was 135.4MB in the beginning and 122.9MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 05:28:53,352 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.98ms. Allocated memory is still 165.7MB. Free memory was 122.8MB in the beginning and 120.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:28:53,353 INFO L158 Benchmark]: Boogie Preprocessor took 22.46ms. Allocated memory is still 165.7MB. Free memory was 120.8MB in the beginning and 120.0MB in the end (delta: 762.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:28:53,354 INFO L158 Benchmark]: RCFGBuilder took 558.55ms. Allocated memory is still 165.7MB. Free memory was 120.0MB in the beginning and 105.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-09 05:28:53,354 INFO L158 Benchmark]: TraceAbstraction took 20466.53ms. Allocated memory was 165.7MB in the beginning and 346.0MB in the end (delta: 180.4MB). Free memory was 104.7MB in the beginning and 238.0MB in the end (delta: -133.3MB). Peak memory consumption was 49.4MB. Max. memory is 16.1GB. [2024-11-09 05:28:53,356 INFO L158 Benchmark]: Witness Printer took 123.43ms. Allocated memory is still 346.0MB. Free memory was 238.0MB in the beginning and 233.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 05:28:53,358 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 109.1MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 362.50ms. Allocated memory is still 165.7MB. Free memory was 135.4MB in the beginning and 122.9MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.98ms. Allocated memory is still 165.7MB. Free memory was 122.8MB in the beginning and 120.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.46ms. Allocated memory is still 165.7MB. Free memory was 120.8MB in the beginning and 120.0MB in the end (delta: 762.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 558.55ms. Allocated memory is still 165.7MB. Free memory was 120.0MB in the beginning and 105.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 20466.53ms. Allocated memory was 165.7MB in the beginning and 346.0MB in the end (delta: 180.4MB). Free memory was 104.7MB in the beginning and 238.0MB in the end (delta: -133.3MB). Peak memory consumption was 49.4MB. Max. memory is 16.1GB. * Witness Printer took 123.43ms. Allocated memory is still 346.0MB. Free memory was 238.0MB in the beginning and 233.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int,GLOBAL],[IntegerLiteral[1]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int,GLOBAL],[IntegerLiteral[1]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int,GLOBAL],[IntegerLiteral[1]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int,GLOBAL],[IntegerLiteral[1]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 40]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 40]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 26 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 19.7s, OverallIterations: 14, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 349 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 348 mSDsluCounter, 695 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 526 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1322 IncrementalHoareTripleChecker+Invalid, 1363 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 169 mSDtfsCounter, 1322 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 820 GetRequests, 469 SyntacticMatches, 32 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4942 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=13, InterpolantAutomatonStates: 170, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 57 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 632 NumberOfCodeBlocks, 617 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 805 ConstructedInterpolants, 0 QuantifiedInterpolants, 1801 SizeOfPredicates, 38 NumberOfNonLiveVariables, 681 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 31 InterpolantComputations, 7 PerfectInterpolantSequences, 496/823 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 2.6s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 10, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 72, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 120, TOOLS_POST_TIME: 1.4s, TOOLS_POST_CALL_APPLICATIONS: 36, TOOLS_POST_CALL_TIME: 0.4s, TOOLS_POST_RETURN_APPLICATIONS: 26, TOOLS_POST_RETURN_TIME: 0.2s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 181, TOOLS_QUANTIFIERELIM_TIME: 1.9s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 276, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 40, DOMAIN_JOIN_TIME: 0.2s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 7, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 12, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 72, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 5, LOOP_SUMMARIZER_CACHE_MISSES: 5, LOOP_SUMMARIZER_OVERALL_TIME: 1.4s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 1.4s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 12, CALL_SUMMARIZER_APPLICATIONS: 26, CALL_SUMMARIZER_CACHE_MISSES: 6, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 935, DAG_COMPRESSION_RETAINED_NODES: 232, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((2 <= counter) && (counter <= 10)) || ((((counter <= 10) && (1 <= counter)) && (q == 0)) && (((long long) r + 1) <= b))) || (counter == 11)) - ProcedureContractResult [Line: 15]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Requires: (counter == 0) Ensures: (((cond != 0) && (counter == 0)) && (counter == \old(counter))) - ProcedureContractResult [Line: 18]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Ensures: (counter == \old(counter)) RESULT: Ultimate proved your program to be correct! [2024-11-09 05:28:53,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab6c7324-7087-4d11-8fa1-b0e32b459a32/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE