./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.c --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_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/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_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/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_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/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 174cfd8cb6426614b32355f584844d4fc6265ba8fd3c3cda6c788ade64de4fc0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:12:38,342 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:12:38,464 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-09 07:12:38,472 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:12:38,473 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:12:38,535 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:12:38,536 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:12:38,537 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:12:38,538 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:12:38,538 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:12:38,539 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:12:38,539 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:12:38,540 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:12:38,540 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:12:38,541 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:12:38,541 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:12:38,542 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:12:38,542 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:12:38,542 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:12:38,543 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:12:38,543 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:12:38,544 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:12:38,545 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:12:38,545 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:12:38,546 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 07:12:38,546 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:12:38,547 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 07:12:38,547 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:12:38,548 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:12:38,548 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:12:38,549 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:12:38,549 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:12:38,550 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 07:12:38,550 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 07:12:38,551 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 07:12:38,577 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:12:38,579 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:12:38,581 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:12:38,583 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:12:38,583 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:12:38,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:12:38,584 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:12:38,585 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:12:38,585 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:12:38,585 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:12:38,586 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:12:38,586 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:12:38,586 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:12:38,587 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:12:38,587 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_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 174cfd8cb6426614b32355f584844d4fc6265ba8fd3c3cda6c788ade64de4fc0 [2024-11-09 07:12:38,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:12:39,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:12:39,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:12:39,013 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:12:39,015 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:12:39,016 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.c Unable to find full path for "g++" [2024-11-09 07:12:41,361 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:12:41,573 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:12:41,574 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.c [2024-11-09 07:12:41,585 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/data/3e08f8340/a4ab7a09947642e8bb1d494be25b7af8/FLAGc2f12347a [2024-11-09 07:12:41,605 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/data/3e08f8340/a4ab7a09947642e8bb1d494be25b7af8 [2024-11-09 07:12:41,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:12:41,610 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:12:41,612 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:12:41,612 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:12:41,621 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:12:41,622 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:12:41" (1/1) ... [2024-11-09 07:12:41,625 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28c172ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:41, skipping insertion in model container [2024-11-09 07:12:41,625 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:12:41" (1/1) ... [2024-11-09 07:12:41,661 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:12:41,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:12:41,986 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:12:42,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:12:42,052 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:12:42,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:42 WrapperNode [2024-11-09 07:12:42,053 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:12:42,054 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:12:42,055 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:12:42,055 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:12:42,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:42" (1/1) ... [2024-11-09 07:12:42,074 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:42" (1/1) ... [2024-11-09 07:12:42,110 INFO L138 Inliner]: procedures = 14, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 92 [2024-11-09 07:12:42,111 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:12:42,112 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:12:42,112 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:12:42,112 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:12:42,132 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:42" (1/1) ... [2024-11-09 07:12:42,132 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:42" (1/1) ... [2024-11-09 07:12:42,138 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:42" (1/1) ... [2024-11-09 07:12:42,138 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:42" (1/1) ... [2024-11-09 07:12:42,146 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:42" (1/1) ... [2024-11-09 07:12:42,154 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:42" (1/1) ... [2024-11-09 07:12:42,156 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:42" (1/1) ... [2024-11-09 07:12:42,157 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:42" (1/1) ... [2024-11-09 07:12:42,160 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:12:42,161 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:12:42,161 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:12:42,162 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:12:42,163 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:42" (1/1) ... [2024-11-09 07:12:42,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:12:42,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:12:42,199 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:12:42,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:12:42,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:12:42,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 07:12:42,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:12:42,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:12:42,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 07:12:42,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 07:12:42,347 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:12:42,350 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:12:42,975 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-11-09 07:12:42,975 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:12:43,064 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:12:43,064 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 07:12:43,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:12:43 BoogieIcfgContainer [2024-11-09 07:12:43,065 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:12:43,069 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:12:43,069 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:12:43,074 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:12:43,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:12:41" (1/3) ... [2024-11-09 07:12:43,075 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f348e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:12:43, skipping insertion in model container [2024-11-09 07:12:43,075 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:42" (2/3) ... [2024-11-09 07:12:43,076 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f348e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:12:43, skipping insertion in model container [2024-11-09 07:12:43,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:12:43" (3/3) ... [2024-11-09 07:12:43,078 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound10.c [2024-11-09 07:12:43,107 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:12:43,107 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-11-09 07:12:43,192 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:12:43,200 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;@11cbfe71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:12:43,201 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2024-11-09 07:12:43,205 INFO L276 IsEmpty]: Start isEmpty. Operand has 65 states, 32 states have (on average 1.90625) internal successors, (61), 56 states have internal predecessors, (61), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 07:12:43,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 07:12:43,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:43,212 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 07:12:43,213 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:12:43,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:43,219 INFO L85 PathProgramCache]: Analyzing trace with hash 5353265, now seen corresponding path program 1 times [2024-11-09 07:12:43,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:43,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888105923] [2024-11-09 07:12:43,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:43,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:43,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:12:43,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:43,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888105923] [2024-11-09 07:12:43,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888105923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:43,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:12:43,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:12:43,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157287557] [2024-11-09 07:12:43,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:43,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 07:12:43,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:43,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 07:12:43,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 07:12:43,466 INFO L87 Difference]: Start difference. First operand has 65 states, 32 states have (on average 1.90625) internal successors, (61), 56 states have internal predecessors, (61), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:12:43,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:43,524 INFO L93 Difference]: Finished difference Result 112 states and 127 transitions. [2024-11-09 07:12:43,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 07:12:43,528 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-09 07:12:43,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:43,541 INFO L225 Difference]: With dead ends: 112 [2024-11-09 07:12:43,542 INFO L226 Difference]: Without dead ends: 61 [2024-11-09 07:12:43,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 07:12:43,553 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:43,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:12:43,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-09 07:12:43,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-09 07:12:43,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 54 states have internal predecessors, (57), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 07:12:43,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2024-11-09 07:12:43,611 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 4 [2024-11-09 07:12:43,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:43,611 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2024-11-09 07:12:43,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:12:43,612 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2024-11-09 07:12:43,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 07:12:43,613 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:43,614 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:12:43,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:12:43,614 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:12:43,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:43,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1735968466, now seen corresponding path program 1 times [2024-11-09 07:12:43,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:43,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241462747] [2024-11-09 07:12:43,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:43,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:43,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:12:43,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1694480582] [2024-11-09 07:12:43,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:43,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:12:43,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:12:43,650 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:12:43,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 07:12:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:43,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 07:12:43,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:12:43,858 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 07:12:43,858 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:12:43,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:43,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241462747] [2024-11-09 07:12:43,859 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:12:43,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694480582] [2024-11-09 07:12:43,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694480582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:43,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:12:43,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:12:43,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609485929] [2024-11-09 07:12:43,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:43,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:12:43,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:43,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:12:43,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:12:43,870 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 07:12:44,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:44,046 INFO L93 Difference]: Finished difference Result 131 states and 152 transitions. [2024-11-09 07:12:44,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:12:44,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 9 [2024-11-09 07:12:44,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:44,050 INFO L225 Difference]: With dead ends: 131 [2024-11-09 07:12:44,050 INFO L226 Difference]: Without dead ends: 84 [2024-11-09 07:12:44,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:12:44,056 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 16 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:44,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 85 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:12:44,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-09 07:12:44,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2024-11-09 07:12:44,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 47 states have (on average 1.702127659574468) internal successors, (80), 70 states have internal predecessors, (80), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 07:12:44,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2024-11-09 07:12:44,104 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 9 [2024-11-09 07:12:44,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:44,106 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2024-11-09 07:12:44,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 07:12:44,107 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2024-11-09 07:12:44,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 07:12:44,108 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:44,108 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:12:44,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 07:12:44,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:12:44,310 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:12:44,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:44,311 INFO L85 PathProgramCache]: Analyzing trace with hash -17467134, now seen corresponding path program 1 times [2024-11-09 07:12:44,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:44,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427545039] [2024-11-09 07:12:44,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:44,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:44,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:12:44,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:44,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427545039] [2024-11-09 07:12:44,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427545039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:44,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:12:44,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:12:44,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568763036] [2024-11-09 07:12:44,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:44,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:12:44,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:44,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:12:44,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:12:44,500 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 07:12:44,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:44,596 INFO L93 Difference]: Finished difference Result 92 states and 107 transitions. [2024-11-09 07:12:44,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:12:44,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 15 [2024-11-09 07:12:44,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:44,598 INFO L225 Difference]: With dead ends: 92 [2024-11-09 07:12:44,598 INFO L226 Difference]: Without dead ends: 90 [2024-11-09 07:12:44,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:12:44,600 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 17 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:44,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 96 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:12:44,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-09 07:12:44,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2024-11-09 07:12:44,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 47 states have (on average 1.6595744680851063) internal successors, (78), 70 states have internal predecessors, (78), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 07:12:44,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 98 transitions. [2024-11-09 07:12:44,618 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 98 transitions. Word has length 15 [2024-11-09 07:12:44,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:44,619 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 98 transitions. [2024-11-09 07:12:44,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 07:12:44,619 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 98 transitions. [2024-11-09 07:12:44,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 07:12:44,620 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:44,621 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:12:44,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 07:12:44,621 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:12:44,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:44,622 INFO L85 PathProgramCache]: Analyzing trace with hash -541482501, now seen corresponding path program 1 times [2024-11-09 07:12:44,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:44,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250703099] [2024-11-09 07:12:44,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:44,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:12:44,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [93621720] [2024-11-09 07:12:44,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:44,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:12:44,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:12:44,711 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:12:44,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 07:12:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:44,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 07:12:44,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:12:44,811 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:12:44,812 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:12:44,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:44,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250703099] [2024-11-09 07:12:44,813 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:12:44,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93621720] [2024-11-09 07:12:44,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93621720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:44,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:12:44,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:12:44,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324229936] [2024-11-09 07:12:44,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:44,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:12:44,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:44,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:12:44,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:12:44,817 INFO L87 Difference]: Start difference. First operand 82 states and 98 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 07:12:44,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:44,953 INFO L93 Difference]: Finished difference Result 117 states and 142 transitions. [2024-11-09 07:12:44,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:12:44,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 16 [2024-11-09 07:12:44,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:44,956 INFO L225 Difference]: With dead ends: 117 [2024-11-09 07:12:44,956 INFO L226 Difference]: Without dead ends: 113 [2024-11-09 07:12:44,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:12:44,958 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 39 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:44,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 78 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:12:44,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-09 07:12:44,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 99. [2024-11-09 07:12:44,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 62 states have (on average 1.6290322580645162) internal successors, (101), 85 states have internal predecessors, (101), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-09 07:12:44,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 125 transitions. [2024-11-09 07:12:44,973 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 125 transitions. Word has length 16 [2024-11-09 07:12:44,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:44,974 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 125 transitions. [2024-11-09 07:12:44,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 07:12:44,974 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 125 transitions. [2024-11-09 07:12:44,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 07:12:44,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:44,975 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:12:45,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 07:12:45,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:12:45,180 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:12:45,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:45,181 INFO L85 PathProgramCache]: Analyzing trace with hash -673638051, now seen corresponding path program 1 times [2024-11-09 07:12:45,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:45,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452521289] [2024-11-09 07:12:45,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:45,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:45,389 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:12:45,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:45,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452521289] [2024-11-09 07:12:45,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452521289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:45,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:12:45,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:12:45,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284728515] [2024-11-09 07:12:45,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:45,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:12:45,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:45,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:12:45,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:12:45,393 INFO L87 Difference]: Start difference. First operand 99 states and 125 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 07:12:46,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:46,007 INFO L93 Difference]: Finished difference Result 115 states and 139 transitions. [2024-11-09 07:12:46,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:12:46,007 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), 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 18 [2024-11-09 07:12:46,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:46,009 INFO L225 Difference]: With dead ends: 115 [2024-11-09 07:12:46,009 INFO L226 Difference]: Without dead ends: 114 [2024-11-09 07:12:46,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:12:46,012 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 129 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:46,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 68 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 07:12:46,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-09 07:12:46,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 103. [2024-11-09 07:12:46,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 66 states have (on average 1.5909090909090908) internal successors, (105), 89 states have internal predecessors, (105), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-09 07:12:46,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 129 transitions. [2024-11-09 07:12:46,034 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 129 transitions. Word has length 18 [2024-11-09 07:12:46,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:46,034 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 129 transitions. [2024-11-09 07:12:46,035 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), 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 07:12:46,035 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 129 transitions. [2024-11-09 07:12:46,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 07:12:46,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:46,036 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:12:46,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 07:12:46,037 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:12:46,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:46,037 INFO L85 PathProgramCache]: Analyzing trace with hash 592056984, now seen corresponding path program 1 times [2024-11-09 07:12:46,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:46,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616638264] [2024-11-09 07:12:46,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:46,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:46,254 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:12:46,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:46,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616638264] [2024-11-09 07:12:46,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616638264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:46,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:12:46,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:12:46,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382104739] [2024-11-09 07:12:46,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:46,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:12:46,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:46,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:12:46,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:12:46,257 INFO L87 Difference]: Start difference. First operand 103 states and 129 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, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 07:12:46,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:46,815 INFO L93 Difference]: Finished difference Result 110 states and 136 transitions. [2024-11-09 07:12:46,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:12:46,816 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, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2024-11-09 07:12:46,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:46,817 INFO L225 Difference]: With dead ends: 110 [2024-11-09 07:12:46,818 INFO L226 Difference]: Without dead ends: 109 [2024-11-09 07:12:46,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:12:46,821 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 74 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:46,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 101 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 07:12:46,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-09 07:12:46,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 104. [2024-11-09 07:12:46,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 67 states have (on average 1.5522388059701493) internal successors, (104), 90 states have internal predecessors, (104), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-09 07:12:46,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 128 transitions. [2024-11-09 07:12:46,887 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 128 transitions. Word has length 19 [2024-11-09 07:12:46,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:46,887 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 128 transitions. [2024-11-09 07:12:46,890 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, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 07:12:46,894 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 128 transitions. [2024-11-09 07:12:46,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 07:12:46,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:46,895 INFO L215 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:12:46,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 07:12:46,895 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:12:46,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:46,896 INFO L85 PathProgramCache]: Analyzing trace with hash -682443809, now seen corresponding path program 1 times [2024-11-09 07:12:46,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:46,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430486128] [2024-11-09 07:12:46,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:46,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:12:46,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [463307254] [2024-11-09 07:12:46,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:46,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:12:46,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:12:46,945 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:12:46,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 07:12:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:47,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 07:12:47,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:12:47,210 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 07:12:47,211 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:12:47,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:47,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430486128] [2024-11-09 07:12:47,211 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:12:47,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463307254] [2024-11-09 07:12:47,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463307254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:47,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:12:47,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:12:47,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493867966] [2024-11-09 07:12:47,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:47,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:12:47,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:47,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:12:47,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:12:47,217 INFO L87 Difference]: Start difference. First operand 104 states and 128 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 07:12:47,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:47,387 INFO L93 Difference]: Finished difference Result 120 states and 148 transitions. [2024-11-09 07:12:47,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:12:47,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 26 [2024-11-09 07:12:47,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:47,389 INFO L225 Difference]: With dead ends: 120 [2024-11-09 07:12:47,389 INFO L226 Difference]: Without dead ends: 110 [2024-11-09 07:12:47,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:12:47,391 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 38 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:47,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 97 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:12:47,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-09 07:12:47,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-09 07:12:47,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 75 states have (on average 1.4266666666666667) internal successors, (107), 94 states have internal predecessors, (107), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-09 07:12:47,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 135 transitions. [2024-11-09 07:12:47,424 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 135 transitions. Word has length 26 [2024-11-09 07:12:47,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:47,424 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 135 transitions. [2024-11-09 07:12:47,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 07:12:47,425 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 135 transitions. [2024-11-09 07:12:47,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 07:12:47,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:47,427 INFO L215 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:12:47,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 07:12:47,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:12:47,632 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:12:47,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:47,633 INFO L85 PathProgramCache]: Analyzing trace with hash 319078454, now seen corresponding path program 1 times [2024-11-09 07:12:47,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:47,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474667424] [2024-11-09 07:12:47,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:47,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:12:47,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630663110] [2024-11-09 07:12:47,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:47,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:12:47,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:12:47,677 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:12:47,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 07:12:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:47,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 07:12:47,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:12:47,910 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 07:12:47,911 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:12:48,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:48,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474667424] [2024-11-09 07:12:48,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:12:48,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630663110] [2024-11-09 07:12:48,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630663110] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:12:48,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1397680469] [2024-11-09 07:12:48,602 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-09 07:12:48,602 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:12:48,608 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:12:48,616 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:12:48,617 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:12:51,603 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2024-11-09 07:12:51,609 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:12:52,723 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2072#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) (<= |ULTIMATE.start_main_~A~0#1| 10) (<= 0 |ULTIMATE.start_main_~A~0#1|))' at error location [2024-11-09 07:12:52,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:12:52,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:12:52,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2024-11-09 07:12:52,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905580841] [2024-11-09 07:12:52,724 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 07:12:52,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:12:52,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:52,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:12:52,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2024-11-09 07:12:52,726 INFO L87 Difference]: Start difference. First operand 110 states and 135 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 07:12:53,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:53,111 INFO L93 Difference]: Finished difference Result 186 states and 239 transitions. [2024-11-09 07:12:53,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:12:53,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 27 [2024-11-09 07:12:53,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:53,115 INFO L225 Difference]: With dead ends: 186 [2024-11-09 07:12:53,115 INFO L226 Difference]: Without dead ends: 182 [2024-11-09 07:12:53,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2024-11-09 07:12:53,116 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 59 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:53,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 90 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:12:53,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-09 07:12:53,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 170. [2024-11-09 07:12:53,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 126 states have (on average 1.4206349206349207) internal successors, (179), 145 states have internal predecessors, (179), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 07:12:53,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 225 transitions. [2024-11-09 07:12:53,148 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 225 transitions. Word has length 27 [2024-11-09 07:12:53,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:53,148 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 225 transitions. [2024-11-09 07:12:53,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 07:12:53,149 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 225 transitions. [2024-11-09 07:12:53,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 07:12:53,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:53,150 INFO L215 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:12:53,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 07:12:53,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-09 07:12:53,352 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:12:53,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:53,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1516011015, now seen corresponding path program 1 times [2024-11-09 07:12:53,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:53,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938135324] [2024-11-09 07:12:53,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:53,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:53,475 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 07:12:53,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:53,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938135324] [2024-11-09 07:12:53,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938135324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:53,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:12:53,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:12:53,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404325482] [2024-11-09 07:12:53,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:53,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:12:53,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:53,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:12:53,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:12:53,479 INFO L87 Difference]: Start difference. First operand 170 states and 225 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 07:12:54,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:54,181 INFO L93 Difference]: Finished difference Result 182 states and 237 transitions. [2024-11-09 07:12:54,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:12:54,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 31 [2024-11-09 07:12:54,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:54,185 INFO L225 Difference]: With dead ends: 182 [2024-11-09 07:12:54,185 INFO L226 Difference]: Without dead ends: 181 [2024-11-09 07:12:54,185 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:12:54,186 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 49 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:54,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 129 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 07:12:54,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-09 07:12:54,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 171. [2024-11-09 07:12:54,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 127 states have (on average 1.4173228346456692) internal successors, (180), 146 states have internal predecessors, (180), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 07:12:54,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 226 transitions. [2024-11-09 07:12:54,225 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 226 transitions. Word has length 31 [2024-11-09 07:12:54,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:54,225 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 226 transitions. [2024-11-09 07:12:54,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 07:12:54,226 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 226 transitions. [2024-11-09 07:12:54,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 07:12:54,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:54,229 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 07:12:54,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 07:12:54,230 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:12:54,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:54,230 INFO L85 PathProgramCache]: Analyzing trace with hash 918975219, now seen corresponding path program 1 times [2024-11-09 07:12:54,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:54,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095543777] [2024-11-09 07:12:54,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:54,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:54,349 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 07:12:54,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:54,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095543777] [2024-11-09 07:12:54,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095543777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:12:54,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806160347] [2024-11-09 07:12:54,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:54,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:12:54,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:12:54,353 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:12:54,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 07:12:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:54,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 07:12:54,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:12:54,469 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 07:12:54,470 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:12:54,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806160347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:54,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:12:54,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-11-09 07:12:54,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455957036] [2024-11-09 07:12:54,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:54,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:12:54,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:54,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:12:54,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:12:54,475 INFO L87 Difference]: Start difference. First operand 171 states and 226 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 07:12:54,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:54,630 INFO L93 Difference]: Finished difference Result 254 states and 347 transitions. [2024-11-09 07:12:54,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:12:54,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 32 [2024-11-09 07:12:54,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:54,633 INFO L225 Difference]: With dead ends: 254 [2024-11-09 07:12:54,636 INFO L226 Difference]: Without dead ends: 252 [2024-11-09 07:12:54,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 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 07:12:54,639 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 49 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:54,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 116 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:12:54,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-09 07:12:54,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 232. [2024-11-09 07:12:54,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 181 states have (on average 1.430939226519337) internal successors, (259), 199 states have internal predecessors, (259), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-09 07:12:54,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 321 transitions. [2024-11-09 07:12:54,684 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 321 transitions. Word has length 32 [2024-11-09 07:12:54,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:54,685 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 321 transitions. [2024-11-09 07:12:54,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 07:12:54,688 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 321 transitions. [2024-11-09 07:12:54,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 07:12:54,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:54,690 INFO L215 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:12:54,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 07:12:54,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 07:12:54,891 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:12:54,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:54,892 INFO L85 PathProgramCache]: Analyzing trace with hash 248298920, now seen corresponding path program 1 times [2024-11-09 07:12:54,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:54,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520722778] [2024-11-09 07:12:54,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:54,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:54,999 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 07:12:55,000 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:55,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520722778] [2024-11-09 07:12:55,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520722778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:55,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:12:55,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:12:55,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104722723] [2024-11-09 07:12:55,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:55,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:12:55,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:55,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:12:55,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:12:55,003 INFO L87 Difference]: Start difference. First operand 232 states and 321 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 07:12:55,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:55,137 INFO L93 Difference]: Finished difference Result 237 states and 325 transitions. [2024-11-09 07:12:55,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:12:55,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2024-11-09 07:12:55,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:55,140 INFO L225 Difference]: With dead ends: 237 [2024-11-09 07:12:55,140 INFO L226 Difference]: Without dead ends: 222 [2024-11-09 07:12:55,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:12:55,141 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 19 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:55,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 90 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:12:55,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-09 07:12:55,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2024-11-09 07:12:55,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 173 states have (on average 1.4450867052023122) internal successors, (250), 191 states have internal predecessors, (250), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-09 07:12:55,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 308 transitions. [2024-11-09 07:12:55,178 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 308 transitions. Word has length 32 [2024-11-09 07:12:55,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:55,179 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 308 transitions. [2024-11-09 07:12:55,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 07:12:55,180 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 308 transitions. [2024-11-09 07:12:55,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 07:12:55,181 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:55,181 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 07:12:55,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 07:12:55,182 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:12:55,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:55,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1576539220, now seen corresponding path program 1 times [2024-11-09 07:12:55,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:55,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2979568] [2024-11-09 07:12:55,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:55,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:55,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:55,274 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 07:12:55,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:55,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2979568] [2024-11-09 07:12:55,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2979568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:12:55,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117594776] [2024-11-09 07:12:55,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:55,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:12:55,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:12:55,283 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:12:55,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 07:12:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:55,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 07:12:55,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:12:55,425 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 07:12:55,426 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:12:55,521 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 07:12:55,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117594776] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:12:55,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1160272239] [2024-11-09 07:12:55,525 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-09 07:12:55,526 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:12:55,526 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:12:55,527 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:12:55,527 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:12:57,492 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2024-11-09 07:12:57,493 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:12:58,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1160272239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:58,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:12:58,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [3, 3, 3] total 17 [2024-11-09 07:12:58,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944157110] [2024-11-09 07:12:58,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:58,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 07:12:58,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:58,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 07:12:58,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-11-09 07:12:58,404 INFO L87 Difference]: Start difference. First operand 222 states and 308 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, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 07:12:59,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:59,455 INFO L93 Difference]: Finished difference Result 233 states and 318 transitions. [2024-11-09 07:12:59,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 07:12:59,456 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, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-11-09 07:12:59,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:59,458 INFO L225 Difference]: With dead ends: 233 [2024-11-09 07:12:59,458 INFO L226 Difference]: Without dead ends: 221 [2024-11-09 07:12:59,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2024-11-09 07:12:59,460 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 128 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:59,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 74 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 07:12:59,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-09 07:12:59,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 190. [2024-11-09 07:12:59,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 148 states have (on average 1.3918918918918919) internal successors, (206), 163 states have internal predecessors, (206), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-09 07:12:59,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 256 transitions. [2024-11-09 07:12:59,498 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 256 transitions. Word has length 33 [2024-11-09 07:12:59,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:59,498 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 256 transitions. [2024-11-09 07:12:59,498 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, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 07:12:59,499 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 256 transitions. [2024-11-09 07:12:59,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 07:12:59,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:59,500 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:12:59,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 07:12:59,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 07:12:59,701 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:12:59,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:59,701 INFO L85 PathProgramCache]: Analyzing trace with hash -614957125, now seen corresponding path program 1 times [2024-11-09 07:12:59,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:59,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396554771] [2024-11-09 07:12:59,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:59,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:59,811 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-09 07:12:59,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:59,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396554771] [2024-11-09 07:12:59,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396554771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:59,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:12:59,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:12:59,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262013913] [2024-11-09 07:12:59,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:59,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:12:59,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:59,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:12:59,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:12:59,814 INFO L87 Difference]: Start difference. First operand 190 states and 256 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 07:12:59,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:59,901 INFO L93 Difference]: Finished difference Result 190 states and 256 transitions. [2024-11-09 07:12:59,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:12:59,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2024-11-09 07:12:59,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:59,903 INFO L225 Difference]: With dead ends: 190 [2024-11-09 07:12:59,904 INFO L226 Difference]: Without dead ends: 189 [2024-11-09 07:12:59,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:12:59,905 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 2 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:59,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 83 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:12:59,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-09 07:12:59,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2024-11-09 07:12:59,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 148 states have (on average 1.364864864864865) internal successors, (202), 162 states have internal predecessors, (202), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-09 07:12:59,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 252 transitions. [2024-11-09 07:12:59,941 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 252 transitions. Word has length 51 [2024-11-09 07:12:59,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:59,941 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 252 transitions. [2024-11-09 07:12:59,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 07:12:59,942 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 252 transitions. [2024-11-09 07:12:59,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 07:12:59,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:59,943 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:12:59,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 07:12:59,944 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:12:59,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:59,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1883801580, now seen corresponding path program 1 times [2024-11-09 07:12:59,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:59,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552282979] [2024-11-09 07:12:59,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:59,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:00,226 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 07:13:00,226 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:13:00,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552282979] [2024-11-09 07:13:00,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552282979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:13:00,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389765561] [2024-11-09 07:13:00,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:00,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:13:00,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:13:00,229 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:13:00,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 07:13:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:00,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 07:13:00,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:13:00,540 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 07:13:00,540 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:13:00,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389765561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:13:00,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:13:00,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-09 07:13:00,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726732113] [2024-11-09 07:13:00,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:13:00,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:13:00,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:13:00,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:13:00,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-09 07:13:00,544 INFO L87 Difference]: Start difference. First operand 189 states and 252 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 07:13:00,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:13:00,703 INFO L93 Difference]: Finished difference Result 225 states and 291 transitions. [2024-11-09 07:13:00,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:13:00,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2024-11-09 07:13:00,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:13:00,706 INFO L225 Difference]: With dead ends: 225 [2024-11-09 07:13:00,706 INFO L226 Difference]: Without dead ends: 224 [2024-11-09 07:13:00,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-09 07:13:00,707 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 23 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:13:00,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 89 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:13:00,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-09 07:13:00,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 189. [2024-11-09 07:13:00,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 148 states have (on average 1.3513513513513513) internal successors, (200), 162 states have internal predecessors, (200), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-09 07:13:00,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 250 transitions. [2024-11-09 07:13:00,748 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 250 transitions. Word has length 52 [2024-11-09 07:13:00,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:13:00,749 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 250 transitions. [2024-11-09 07:13:00,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 07:13:00,749 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 250 transitions. [2024-11-09 07:13:00,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 07:13:00,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:00,751 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:13:00,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 07:13:00,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 07:13:00,956 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:13:00,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:00,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1731693277, now seen corresponding path program 1 times [2024-11-09 07:13:00,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:13:00,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227139429] [2024-11-09 07:13:00,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:00,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:13:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:01,206 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 07:13:01,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:13:01,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227139429] [2024-11-09 07:13:01,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227139429] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:13:01,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432454773] [2024-11-09 07:13:01,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:01,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:13:01,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:13:01,210 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:13:01,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 07:13:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:01,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 07:13:01,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:13:01,539 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-09 07:13:01,539 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:13:01,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432454773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:13:01,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:13:01,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-09 07:13:01,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218885103] [2024-11-09 07:13:01,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:13:01,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:13:01,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:13:01,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:13:01,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:13:01,542 INFO L87 Difference]: Start difference. First operand 189 states and 250 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 07:13:01,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:13:01,838 INFO L93 Difference]: Finished difference Result 199 states and 264 transitions. [2024-11-09 07:13:01,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:13:01,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 53 [2024-11-09 07:13:01,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:13:01,841 INFO L225 Difference]: With dead ends: 199 [2024-11-09 07:13:01,841 INFO L226 Difference]: Without dead ends: 198 [2024-11-09 07:13:01,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:13:01,842 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 38 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:13:01,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 96 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:13:01,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-09 07:13:01,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 195. [2024-11-09 07:13:01,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 154 states have (on average 1.3376623376623376) internal successors, (206), 168 states have internal predecessors, (206), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-09 07:13:01,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 256 transitions. [2024-11-09 07:13:01,894 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 256 transitions. Word has length 53 [2024-11-09 07:13:01,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:13:01,896 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 256 transitions. [2024-11-09 07:13:01,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 07:13:01,897 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 256 transitions. [2024-11-09 07:13:01,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 07:13:01,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:01,899 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:13:01,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 07:13:02,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 07:13:02,100 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:13:02,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:02,101 INFO L85 PathProgramCache]: Analyzing trace with hash 2142884150, now seen corresponding path program 1 times [2024-11-09 07:13:02,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:13:02,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305203868] [2024-11-09 07:13:02,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:02,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:13:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:02,372 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 07:13:02,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:13:02,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305203868] [2024-11-09 07:13:02,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305203868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:13:02,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751485728] [2024-11-09 07:13:02,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:02,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:13:02,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:13:02,376 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:13:02,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 07:13:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:02,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 07:13:02,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:13:02,621 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-09 07:13:02,622 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:13:02,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751485728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:13:02,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:13:02,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-09 07:13:02,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551629031] [2024-11-09 07:13:02,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:13:02,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:13:02,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:13:02,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:13:02,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:13:02,625 INFO L87 Difference]: Start difference. First operand 195 states and 256 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 07:13:02,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:13:02,814 INFO L93 Difference]: Finished difference Result 199 states and 260 transitions. [2024-11-09 07:13:02,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:13:02,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2024-11-09 07:13:02,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:13:02,816 INFO L225 Difference]: With dead ends: 199 [2024-11-09 07:13:02,816 INFO L226 Difference]: Without dead ends: 198 [2024-11-09 07:13:02,817 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:13:02,818 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 21 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:13:02,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 83 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:13:02,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-09 07:13:02,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2024-11-09 07:13:02,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 156 states have (on average 1.3205128205128205) internal successors, (206), 170 states have internal predecessors, (206), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-09 07:13:02,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 256 transitions. [2024-11-09 07:13:02,863 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 256 transitions. Word has length 54 [2024-11-09 07:13:02,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:13:02,863 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 256 transitions. [2024-11-09 07:13:02,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 07:13:02,864 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 256 transitions. [2024-11-09 07:13:02,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-09 07:13:02,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:02,865 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:13:02,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 07:13:03,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 07:13:03,066 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:13:03,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:03,066 INFO L85 PathProgramCache]: Analyzing trace with hash 2022335832, now seen corresponding path program 1 times [2024-11-09 07:13:03,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:13:03,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532487218] [2024-11-09 07:13:03,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:03,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:13:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:13:03,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535412489] [2024-11-09 07:13:03,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:03,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:13:03,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:13:03,099 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:13:03,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 07:13:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:03,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 07:13:03,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:13:03,507 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-09 07:13:03,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:13:04,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:13:04,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532487218] [2024-11-09 07:13:04,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:13:04,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535412489] [2024-11-09 07:13:04,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535412489] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:13:04,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [844944743] [2024-11-09 07:13:04,358 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:13:04,359 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:13:04,359 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:13:04,359 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:13:04,360 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:13:09,146 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:13:09,149 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:13:20,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [844944743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:13:20,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:13:20,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [5] total 29 [2024-11-09 07:13:20,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439610327] [2024-11-09 07:13:20,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:13:20,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 07:13:20,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:13:20,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 07:13:20,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=908, Unknown=2, NotChecked=0, Total=1122 [2024-11-09 07:13:20,034 INFO L87 Difference]: Start difference. First operand 197 states and 256 transitions. Second operand has 26 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 07:13:24,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:13:28,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:13:36,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:13:38,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:13:40,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:13:42,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-09 07:13:44,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-09 07:13:46,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-09 07:13:48,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:13:50,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-09 07:13:52,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-09 07:13:54,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:14:26,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:14:26,167 INFO L93 Difference]: Finished difference Result 220 states and 292 transitions. [2024-11-09 07:14:26,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-09 07:14:26,168 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 56 [2024-11-09 07:14:26,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:14:26,169 INFO L225 Difference]: With dead ends: 220 [2024-11-09 07:14:26,169 INFO L226 Difference]: Without dead ends: 212 [2024-11-09 07:14:26,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 88 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 50.6s TimeCoverageRelationStatistics Valid=709, Invalid=2354, Unknown=17, NotChecked=0, Total=3080 [2024-11-09 07:14:26,172 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 519 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 228 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:14:26,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 49 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 723 Invalid, 12 Unknown, 0 Unchecked, 26.5s Time] [2024-11-09 07:14:26,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-09 07:14:26,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 76. [2024-11-09 07:14:26,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 57 states have (on average 1.1929824561403508) internal successors, (68), 64 states have internal predecessors, (68), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 07:14:26,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2024-11-09 07:14:26,204 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 56 [2024-11-09 07:14:26,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:14:26,205 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2024-11-09 07:14:26,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 07:14:26,205 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2024-11-09 07:14:26,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-09 07:14:26,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:14:26,206 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:14:26,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 07:14:26,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 07:14:26,407 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:14:26,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:14:26,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1900590619, now seen corresponding path program 1 times [2024-11-09 07:14:26,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:14:26,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104909496] [2024-11-09 07:14:26,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:26,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:14:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:14:26,867 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 07:14:26,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:14:26,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104909496] [2024-11-09 07:14:26,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104909496] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:14:26,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154532292] [2024-11-09 07:14:26,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:26,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:14:26,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:14:26,870 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:14:26,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 07:14:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:14:26,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 07:14:26,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:14:28,123 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 07:14:28,123 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:14:29,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154532292] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:14:29,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1343899827] [2024-11-09 07:14:29,870 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:14:29,871 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:14:29,871 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:14:29,871 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:14:29,872 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:14:33,323 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:14:33,325 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:14:43,257 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8203#(exists ((|v_ULTIMATE.start_main_~B~0#1_43| Int) (|v_ULTIMATE.start_main_~r~0#1_49| Int) (|v_ULTIMATE.start_main_~q~0#1_55| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 2147483648 (+ |v_ULTIMATE.start_main_~q~0#1_55| |v_ULTIMATE.start_main_~r~0#1_49|)) (<= |v_ULTIMATE.start_main_~r~0#1_49| 2147483647) (= |v_ULTIMATE.start_main_~B~0#1_43| 1) (<= |ULTIMATE.start_main_~A~0#1| 10) (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= 0 (+ |ULTIMATE.start_main_~d~0#1| |v_ULTIMATE.start_main_~r~0#1_49|)) (<= |v_ULTIMATE.start_main_~q~0#1_55| 2147483647)))' at error location [2024-11-09 07:14:43,257 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:14:43,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:14:43,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2024-11-09 07:14:43,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474579458] [2024-11-09 07:14:43,258 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:14:43,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 07:14:43,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:14:43,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 07:14:43,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1787, Unknown=2, NotChecked=0, Total=1980 [2024-11-09 07:14:43,260 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand has 16 states, 15 states have (on average 4.733333333333333) internal successors, (71), 16 states have internal predecessors, (71), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-09 07:14:46,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:14:46,059 INFO L93 Difference]: Finished difference Result 309 states and 392 transitions. [2024-11-09 07:14:46,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 07:14:46,060 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.733333333333333) internal successors, (71), 16 states have internal predecessors, (71), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 59 [2024-11-09 07:14:46,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:14:46,062 INFO L225 Difference]: With dead ends: 309 [2024-11-09 07:14:46,062 INFO L226 Difference]: Without dead ends: 304 [2024-11-09 07:14:46,063 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 93 SyntacticMatches, 5 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1406 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=408, Invalid=3372, Unknown=2, NotChecked=0, Total=3782 [2024-11-09 07:14:46,064 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 467 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:14:46,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 184 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 07:14:46,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-11-09 07:14:46,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 181. [2024-11-09 07:14:46,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 149 states have (on average 1.174496644295302) internal successors, (175), 156 states have internal predecessors, (175), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 07:14:46,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 221 transitions. [2024-11-09 07:14:46,130 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 221 transitions. Word has length 59 [2024-11-09 07:14:46,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:14:46,131 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 221 transitions. [2024-11-09 07:14:46,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.733333333333333) internal successors, (71), 16 states have internal predecessors, (71), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-09 07:14:46,131 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 221 transitions. [2024-11-09 07:14:46,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 07:14:46,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:14:46,133 INFO L215 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:14:46,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 07:14:46,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 07:14:46,337 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:14:46,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:14:46,337 INFO L85 PathProgramCache]: Analyzing trace with hash -485460006, now seen corresponding path program 1 times [2024-11-09 07:14:46,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:14:46,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911734150] [2024-11-09 07:14:46,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:46,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:14:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:14:46,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1715236435] [2024-11-09 07:14:46,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:46,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:14:46,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:14:46,368 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:14:46,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 07:14:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:14:46,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 07:14:46,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:14:47,459 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-09 07:14:47,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:14:48,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:14:48,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911734150] [2024-11-09 07:14:48,432 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:14:48,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715236435] [2024-11-09 07:14:48,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715236435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:14:48,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [724215576] [2024-11-09 07:14:48,435 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2024-11-09 07:14:48,435 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:14:48,436 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:14:48,436 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:14:48,436 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:14:52,030 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:14:52,032 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:15:01,793 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9139#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (exists ((|v_ULTIMATE.start_main_~q~0#1_61| Int) (|v_ULTIMATE.start_main_~d~0#1_97| Int)) (and (<= 0 (+ 2147483647 |v_ULTIMATE.start_main_~d~0#1_97|)) (<= |v_ULTIMATE.start_main_~q~0#1_61| 2147483647) (<= |v_ULTIMATE.start_main_~d~0#1_97| 2147483647) (<= (+ (* |v_ULTIMATE.start_main_~q~0#1_61| |v_ULTIMATE.start_main_~d~0#1_97|) 2147483649) 0) (<= 0 (+ |v_ULTIMATE.start_main_~q~0#1_61| 2147483648)))) (<= 0 (+ 2147483647 |ULTIMATE.start_main_~r~0#1|)) (= |ULTIMATE.start_main_~B~0#1| 1) (<= |ULTIMATE.start_main_~A~0#1| 10) (<= 0 |ULTIMATE.start_main_~A~0#1|))' at error location [2024-11-09 07:15:01,793 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:15:01,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:15:01,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-09 07:15:01,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263423412] [2024-11-09 07:15:01,793 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 07:15:01,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 07:15:01,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:15:01,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 07:15:01,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1334, Unknown=2, NotChecked=0, Total=1560 [2024-11-09 07:15:01,795 INFO L87 Difference]: Start difference. First operand 181 states and 221 transitions. Second operand has 10 states, 8 states have (on average 5.125) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-09 07:15:02,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:15:02,501 INFO L93 Difference]: Finished difference Result 208 states and 244 transitions. [2024-11-09 07:15:02,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 07:15:02,503 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.125) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 69 [2024-11-09 07:15:02,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:15:02,504 INFO L225 Difference]: With dead ends: 208 [2024-11-09 07:15:02,504 INFO L226 Difference]: Without dead ends: 122 [2024-11-09 07:15:02,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 120 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=224, Invalid=1334, Unknown=2, NotChecked=0, Total=1560 [2024-11-09 07:15:02,506 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 16 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 07:15:02,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 120 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 07:15:02,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-09 07:15:02,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 119. [2024-11-09 07:15:02,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 93 states have (on average 1.1290322580645162) internal successors, (105), 100 states have internal predecessors, (105), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-09 07:15:02,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2024-11-09 07:15:02,559 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 69 [2024-11-09 07:15:02,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:15:02,560 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2024-11-09 07:15:02,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.125) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-09 07:15:02,560 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2024-11-09 07:15:02,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 07:15:02,561 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:15:02,561 INFO L215 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:15:02,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 07:15:02,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:15:02,762 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:15:02,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:15:02,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1624373500, now seen corresponding path program 1 times [2024-11-09 07:15:02,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:15:02,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319974170] [2024-11-09 07:15:02,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:02,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:15:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:15:02,997 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-09 07:15:02,997 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:15:02,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319974170] [2024-11-09 07:15:02,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319974170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:15:02,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:15:02,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:15:02,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666589654] [2024-11-09 07:15:02,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:15:02,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:15:02,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:15:02,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:15:02,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:15:03,000 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 07:15:03,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:15:03,483 INFO L93 Difference]: Finished difference Result 119 states and 139 transitions. [2024-11-09 07:15:03,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:15:03,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2024-11-09 07:15:03,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:15:03,484 INFO L225 Difference]: With dead ends: 119 [2024-11-09 07:15:03,484 INFO L226 Difference]: Without dead ends: 86 [2024-11-09 07:15:03,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:15:03,485 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 38 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:15:03,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 77 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:15:03,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-09 07:15:03,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-09 07:15:03,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 71 states have internal predecessors, (75), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 07:15:03,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2024-11-09 07:15:03,508 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 71 [2024-11-09 07:15:03,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:15:03,508 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2024-11-09 07:15:03,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 07:15:03,508 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2024-11-09 07:15:03,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-09 07:15:03,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:15:03,509 INFO L215 NwaCegarLoop]: trace histogram [11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:15:03,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 07:15:03,509 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:15:03,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:15:03,509 INFO L85 PathProgramCache]: Analyzing trace with hash 530533004, now seen corresponding path program 2 times [2024-11-09 07:15:03,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:15:03,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642739479] [2024-11-09 07:15:03,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:03,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:15:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:15:03,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1912260838] [2024-11-09 07:15:03,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:15:03,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:15:03,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:15:03,534 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:15:03,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 07:15:03,591 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 07:15:03,591 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:15:03,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 07:15:03,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:15:04,735 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-09 07:15:04,735 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:15:17,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:15:17,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642739479] [2024-11-09 07:15:17,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:15:17,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912260838] [2024-11-09 07:15:17,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912260838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:15:17,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [997870276] [2024-11-09 07:15:17,091 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:15:17,091 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:15:17,091 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:15:17,092 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:15:17,092 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:15:20,785 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:15:20,788 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:15:47,252 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10117#(exists ((|v_ULTIMATE.start_main_~q~0#1_67| Int) (|v_ULTIMATE.start_main_~r~0#1_59| Int) (|v_ULTIMATE.start_main_~B~0#1_46| Int)) (and (<= 1 |#StackHeapBarrier|) (<= |v_ULTIMATE.start_main_~r~0#1_59| 2147483647) (= |v_ULTIMATE.start_main_~B~0#1_46| 1) (<= 2147483648 (+ |v_ULTIMATE.start_main_~q~0#1_67| |v_ULTIMATE.start_main_~r~0#1_59|)) (<= |ULTIMATE.start_main_~A~0#1| 10) (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= |v_ULTIMATE.start_main_~q~0#1_67| 2147483647)))' at error location [2024-11-09 07:15:47,252 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:15:47,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:15:47,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-09 07:15:47,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100421706] [2024-11-09 07:15:47,253 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 07:15:47,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 07:15:47,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:15:47,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 07:15:47,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=1356, Unknown=9, NotChecked=0, Total=1722 [2024-11-09 07:15:47,255 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand has 10 states, 8 states have (on average 4.25) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 07:15:47,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:15:47,868 INFO L93 Difference]: Finished difference Result 123 states and 147 transitions. [2024-11-09 07:15:47,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 07:15:47,868 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 4.25) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 76 [2024-11-09 07:15:47,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:15:47,871 INFO L225 Difference]: With dead ends: 123 [2024-11-09 07:15:47,871 INFO L226 Difference]: Without dead ends: 122 [2024-11-09 07:15:47,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 37.0s TimeCoverageRelationStatistics Valid=357, Invalid=1356, Unknown=9, NotChecked=0, Total=1722 [2024-11-09 07:15:47,873 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 37 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:15:47,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 59 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 07:15:47,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-09 07:15:47,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 86. [2024-11-09 07:15:47,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 71 states have internal predecessors, (75), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 07:15:47,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2024-11-09 07:15:47,912 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 76 [2024-11-09 07:15:47,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:15:47,913 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2024-11-09 07:15:47,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 4.25) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 07:15:47,913 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2024-11-09 07:15:47,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-09 07:15:47,914 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:15:47,914 INFO L215 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:15:47,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 07:15:48,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:15:48,115 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:15:48,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:15:48,116 INFO L85 PathProgramCache]: Analyzing trace with hash 238088971, now seen corresponding path program 2 times [2024-11-09 07:15:48,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:15:48,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087081724] [2024-11-09 07:15:48,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:48,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:15:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:15:48,430 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 07:15:48,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:15:48,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087081724] [2024-11-09 07:15:48,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087081724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:15:48,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525167569] [2024-11-09 07:15:48,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:15:48,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:15:48,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:15:48,433 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:15:48,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 07:15:48,510 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 07:15:48,511 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:15:48,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 07:15:48,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:15:48,808 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 07:15:48,809 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:15:49,380 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 07:15:49,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525167569] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:15:49,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1164689957] [2024-11-09 07:15:49,384 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2024-11-09 07:15:49,384 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:15:49,384 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:15:49,385 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:15:49,385 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:15:52,859 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:15:52,861 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:16:03,663 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10917#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (exists ((|v_ULTIMATE.start_main_~d~0#1_121| Int) (|v_ULTIMATE.start_main_~q~0#1_72| Int)) (and (<= |v_ULTIMATE.start_main_~d~0#1_121| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~q~0#1_72| 2147483648)) (<= |v_ULTIMATE.start_main_~q~0#1_72| 2147483647) (<= 0 (+ 2147483647 |v_ULTIMATE.start_main_~d~0#1_121|)) (<= (+ 2147483649 (* |v_ULTIMATE.start_main_~q~0#1_72| |v_ULTIMATE.start_main_~d~0#1_121|)) 0))) (<= 0 (+ 2147483647 |ULTIMATE.start_main_~r~0#1|)) (= |ULTIMATE.start_main_~B~0#1| 1) (<= |ULTIMATE.start_main_~A~0#1| 10) (<= 0 |ULTIMATE.start_main_~A~0#1|))' at error location [2024-11-09 07:16:03,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:16:03,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:16:03,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2024-11-09 07:16:03,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368160191] [2024-11-09 07:16:03,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:16:03,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:16:03,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:16:03,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:16:03,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=850, Unknown=2, NotChecked=0, Total=992 [2024-11-09 07:16:03,666 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-09 07:16:03,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:16:03,971 INFO L93 Difference]: Finished difference Result 136 states and 158 transitions. [2024-11-09 07:16:03,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:16:03,972 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 86 [2024-11-09 07:16:03,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:16:03,973 INFO L225 Difference]: With dead ends: 136 [2024-11-09 07:16:03,973 INFO L226 Difference]: Without dead ends: 129 [2024-11-09 07:16:03,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 224 SyntacticMatches, 10 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=140, Invalid=850, Unknown=2, NotChecked=0, Total=992 [2024-11-09 07:16:03,975 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 30 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:16:03,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 103 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:16:03,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-09 07:16:04,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 115. [2024-11-09 07:16:04,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 90 states have (on average 1.1222222222222222) internal successors, (101), 96 states have internal predecessors, (101), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-09 07:16:04,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2024-11-09 07:16:04,008 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 86 [2024-11-09 07:16:04,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:16:04,008 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2024-11-09 07:16:04,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-09 07:16:04,009 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2024-11-09 07:16:04,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-09 07:16:04,010 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:16:04,010 INFO L215 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 07:16:04,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 07:16:04,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-09 07:16:04,211 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:16:04,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:16:04,211 INFO L85 PathProgramCache]: Analyzing trace with hash -804474729, now seen corresponding path program 1 times [2024-11-09 07:16:04,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:16:04,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230226611] [2024-11-09 07:16:04,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:16:04,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:16:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:16:04,850 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 07:16:04,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:16:04,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230226611] [2024-11-09 07:16:04,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230226611] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:16:04,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074902936] [2024-11-09 07:16:04,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:16:04,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:16:04,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:16:04,853 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:16:04,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 07:16:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:16:04,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 07:16:04,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:16:06,452 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 07:16:06,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:16:10,193 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 07:16:10,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074902936] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:16:10,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [205028299] [2024-11-09 07:16:10,196 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:16:10,197 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:16:10,197 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:16:10,197 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:16:10,199 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:16:13,528 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:16:13,531 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:16:38,742 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11822#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~B~0#1| 1) (<= |ULTIMATE.start_main_~A~0#1| 10) (<= 0 |ULTIMATE.start_main_~A~0#1|))' at error location [2024-11-09 07:16:38,742 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:16:38,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:16:38,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 6] total 24 [2024-11-09 07:16:38,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165618347] [2024-11-09 07:16:38,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:16:38,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 07:16:38,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:16:38,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 07:16:38,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=2118, Unknown=7, NotChecked=0, Total=2450 [2024-11-09 07:16:38,746 INFO L87 Difference]: Start difference. First operand 115 states and 135 transitions. Second operand has 25 states, 24 states have (on average 6.666666666666667) internal successors, (160), 25 states have internal predecessors, (160), 13 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 13 states have call predecessors, (39), 13 states have call successors, (39) [2024-11-09 07:16:45,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:16:45,369 INFO L93 Difference]: Finished difference Result 604 states and 731 transitions. [2024-11-09 07:16:45,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-09 07:16:45,370 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 6.666666666666667) internal successors, (160), 25 states have internal predecessors, (160), 13 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 13 states have call predecessors, (39), 13 states have call successors, (39) Word has length 92 [2024-11-09 07:16:45,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:16:45,373 INFO L225 Difference]: With dead ends: 604 [2024-11-09 07:16:45,373 INFO L226 Difference]: Without dead ends: 508 [2024-11-09 07:16:45,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 229 SyntacticMatches, 7 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2457 ImplicationChecksByTransitivity, 29.6s TimeCoverageRelationStatistics Valid=997, Invalid=5476, Unknown=7, NotChecked=0, Total=6480 [2024-11-09 07:16:45,377 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 698 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:16:45,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 904 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1512 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-09 07:16:45,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2024-11-09 07:16:45,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 271. [2024-11-09 07:16:45,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 223 states have (on average 1.1076233183856503) internal successors, (247), 229 states have internal predecessors, (247), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-09 07:16:45,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 327 transitions. [2024-11-09 07:16:45,514 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 327 transitions. Word has length 92 [2024-11-09 07:16:45,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:16:45,515 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 327 transitions. [2024-11-09 07:16:45,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 6.666666666666667) internal successors, (160), 25 states have internal predecessors, (160), 13 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 13 states have call predecessors, (39), 13 states have call successors, (39) [2024-11-09 07:16:45,516 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 327 transitions. [2024-11-09 07:16:45,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-09 07:16:45,517 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:16:45,518 INFO L215 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 07:16:45,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 07:16:45,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-09 07:16:45,722 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:16:45,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:16:45,723 INFO L85 PathProgramCache]: Analyzing trace with hash 831087290, now seen corresponding path program 1 times [2024-11-09 07:16:45,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:16:45,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222879892] [2024-11-09 07:16:45,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:16:45,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:16:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:16:46,348 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2024-11-09 07:16:46,348 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:16:46,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222879892] [2024-11-09 07:16:46,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222879892] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:16:46,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122997888] [2024-11-09 07:16:46,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:16:46,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:16:46,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:16:46,352 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:16:46,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 07:16:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:16:46,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 07:16:46,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:16:47,214 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 25 proven. 18 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 07:16:47,214 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:16:53,780 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 07:16:53,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122997888] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:16:53,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1034914354] [2024-11-09 07:16:53,782 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:16:53,783 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:16:53,783 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:16:53,783 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:16:53,783 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:16:56,784 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:16:56,787 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:17:32,257 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13535#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (= |ULTIMATE.start_main_~B~0#1| 1) (<= |ULTIMATE.start_main_~A~0#1| 10) (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2024-11-09 07:17:32,257 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:17:32,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:17:32,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 8] total 20 [2024-11-09 07:17:32,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510321895] [2024-11-09 07:17:32,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:17:32,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 07:17:32,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:17:32,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 07:17:32,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1673, Unknown=15, NotChecked=0, Total=2070 [2024-11-09 07:17:32,261 INFO L87 Difference]: Start difference. First operand 271 states and 327 transitions. Second operand has 21 states, 20 states have (on average 7.85) internal successors, (157), 21 states have internal predecessors, (157), 11 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2024-11-09 07:17:33,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:17:33,426 INFO L93 Difference]: Finished difference Result 365 states and 443 transitions. [2024-11-09 07:17:33,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 07:17:33,428 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 7.85) internal successors, (157), 21 states have internal predecessors, (157), 11 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) Word has length 93 [2024-11-09 07:17:33,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:17:33,430 INFO L225 Difference]: With dead ends: 365 [2024-11-09 07:17:33,430 INFO L226 Difference]: Without dead ends: 364 [2024-11-09 07:17:33,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 236 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1414 ImplicationChecksByTransitivity, 36.7s TimeCoverageRelationStatistics Valid=455, Invalid=1980, Unknown=15, NotChecked=0, Total=2450 [2024-11-09 07:17:33,435 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 162 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 07:17:33,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 218 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 07:17:33,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-09 07:17:33,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 270. [2024-11-09 07:17:33,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 223 states have (on average 1.0986547085201794) internal successors, (245), 228 states have internal predecessors, (245), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-09 07:17:33,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 325 transitions. [2024-11-09 07:17:33,567 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 325 transitions. Word has length 93 [2024-11-09 07:17:33,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:17:33,568 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 325 transitions. [2024-11-09 07:17:33,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 7.85) internal successors, (157), 21 states have internal predecessors, (157), 11 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2024-11-09 07:17:33,568 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 325 transitions. [2024-11-09 07:17:33,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-09 07:17:33,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:17:33,570 INFO L215 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-09 07:17:33,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-09 07:17:33,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-09 07:17:33,771 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:17:33,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:17:33,771 INFO L85 PathProgramCache]: Analyzing trace with hash -6097671, now seen corresponding path program 1 times [2024-11-09 07:17:33,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:17:33,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609674616] [2024-11-09 07:17:33,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:17:33,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:17:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:17:34,448 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 07:17:34,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:17:34,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609674616] [2024-11-09 07:17:34,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609674616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:17:34,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454043679] [2024-11-09 07:17:34,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:17:34,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:17:34,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:17:34,450 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:17:34,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 07:17:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:17:34,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 07:17:34,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:17:35,407 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 07:17:35,407 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:17:38,847 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 07:17:38,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454043679] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:17:38,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [84218018] [2024-11-09 07:17:38,849 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:17:38,850 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:17:38,850 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:17:38,850 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:17:38,850 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:17:45,131 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:17:45,132 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:18:29,313 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14923#(and (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2024-11-09 07:18:29,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:18:29,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:18:29,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 22 [2024-11-09 07:18:29,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790907676] [2024-11-09 07:18:29,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:18:29,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 07:18:29,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:18:29,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 07:18:29,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=1850, Unknown=10, NotChecked=0, Total=2256 [2024-11-09 07:18:29,317 INFO L87 Difference]: Start difference. First operand 270 states and 325 transitions. Second operand has 23 states, 22 states have (on average 7.545454545454546) internal successors, (166), 23 states have internal predecessors, (166), 12 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) [2024-11-09 07:18:33,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:18:33,336 INFO L93 Difference]: Finished difference Result 636 states and 765 transitions. [2024-11-09 07:18:33,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 07:18:33,337 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 7.545454545454546) internal successors, (166), 23 states have internal predecessors, (166), 12 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) Word has length 94 [2024-11-09 07:18:33,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:18:33,340 INFO L225 Difference]: With dead ends: 636 [2024-11-09 07:18:33,340 INFO L226 Difference]: Without dead ends: 572 [2024-11-09 07:18:33,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 240 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1795 ImplicationChecksByTransitivity, 46.5s TimeCoverageRelationStatistics Valid=723, Invalid=3049, Unknown=10, NotChecked=0, Total=3782 [2024-11-09 07:18:33,343 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 430 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:18:33,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 485 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-09 07:18:33,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-11-09 07:18:33,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 456. [2024-11-09 07:18:33,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 389 states have (on average 1.1028277634961439) internal successors, (429), 394 states have internal predecessors, (429), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-09 07:18:33,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 549 transitions. [2024-11-09 07:18:33,553 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 549 transitions. Word has length 94 [2024-11-09 07:18:33,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:18:33,554 INFO L471 AbstractCegarLoop]: Abstraction has 456 states and 549 transitions. [2024-11-09 07:18:33,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 7.545454545454546) internal successors, (166), 23 states have internal predecessors, (166), 12 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) [2024-11-09 07:18:33,555 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 549 transitions. [2024-11-09 07:18:33,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-09 07:18:33,560 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:18:33,561 INFO L215 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-09 07:18:33,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-09 07:18:33,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-09 07:18:33,762 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:18:33,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:18:33,762 INFO L85 PathProgramCache]: Analyzing trace with hash -2124516296, now seen corresponding path program 3 times [2024-11-09 07:18:33,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:18:33,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989111568] [2024-11-09 07:18:33,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:18:33,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:18:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:18:34,514 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 07:18:34,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:18:34,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989111568] [2024-11-09 07:18:34,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989111568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:18:34,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270466962] [2024-11-09 07:18:34,515 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 07:18:34,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:18:34,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:18:34,516 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:18:34,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 07:18:34,630 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 07:18:34,630 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:18:34,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 07:18:34,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:18:37,063 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 11 proven. 55 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-09 07:18:37,063 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:18:41,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270466962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:18:41,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1611343850] [2024-11-09 07:18:41,331 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:18:41,331 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:18:41,331 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:18:41,331 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:18:41,332 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:18:44,266 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:18:44,268 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:18:54,508 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16658#(exists ((|v_ULTIMATE.start_main_~r~0#1_87| Int) (|v_ULTIMATE.start_main_~q~0#1_96| Int) (|v_ULTIMATE.start_main_~B~0#1_47| Int)) (and (<= 1 |#StackHeapBarrier|) (= |v_ULTIMATE.start_main_~B~0#1_47| 1) (<= 0 (+ |ULTIMATE.start_main_~d~0#1| |v_ULTIMATE.start_main_~r~0#1_87|)) (<= |v_ULTIMATE.start_main_~q~0#1_96| 2147483647) (<= |v_ULTIMATE.start_main_~r~0#1_87| 2147483647) (<= 2147483648 (+ |v_ULTIMATE.start_main_~q~0#1_96| |v_ULTIMATE.start_main_~r~0#1_87|)) (<= |ULTIMATE.start_main_~A~0#1| 10) (<= 0 |ULTIMATE.start_main_~A~0#1|)))' at error location [2024-11-09 07:18:54,509 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:18:54,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:18:54,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14] total 23 [2024-11-09 07:18:54,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660394568] [2024-11-09 07:18:54,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:18:54,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 07:18:54,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:18:54,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 07:18:54,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=2428, Unknown=2, NotChecked=0, Total=2652 [2024-11-09 07:18:54,513 INFO L87 Difference]: Start difference. First operand 456 states and 549 transitions. Second operand has 24 states, 22 states have (on average 5.545454545454546) internal successors, (122), 24 states have internal predecessors, (122), 11 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) [2024-11-09 07:18:58,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:18:58,733 INFO L93 Difference]: Finished difference Result 692 states and 845 transitions. [2024-11-09 07:18:58,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 07:18:58,734 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 5.545454545454546) internal successors, (122), 24 states have internal predecessors, (122), 11 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) Word has length 99 [2024-11-09 07:18:58,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:18:58,738 INFO L225 Difference]: With dead ends: 692 [2024-11-09 07:18:58,738 INFO L226 Difference]: Without dead ends: 688 [2024-11-09 07:18:58,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 166 SyntacticMatches, 9 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2028 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=423, Invalid=4687, Unknown=2, NotChecked=0, Total=5112 [2024-11-09 07:18:58,741 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 329 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:18:58,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 380 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-09 07:18:58,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2024-11-09 07:18:59,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 579. [2024-11-09 07:18:59,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 498 states have (on average 1.1104417670682731) internal successors, (553), 503 states have internal predecessors, (553), 74 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2024-11-09 07:18:59,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 701 transitions. [2024-11-09 07:18:59,006 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 701 transitions. Word has length 99 [2024-11-09 07:18:59,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:18:59,006 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 701 transitions. [2024-11-09 07:18:59,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 5.545454545454546) internal successors, (122), 24 states have internal predecessors, (122), 11 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) [2024-11-09 07:18:59,007 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 701 transitions. [2024-11-09 07:18:59,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-09 07:18:59,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:18:59,012 INFO L215 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:18:59,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-09 07:18:59,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:18:59,213 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:18:59,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:18:59,213 INFO L85 PathProgramCache]: Analyzing trace with hash -16241027, now seen corresponding path program 1 times [2024-11-09 07:18:59,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:18:59,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311280084] [2024-11-09 07:18:59,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:18:59,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:18:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:18:59,636 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 34 proven. 16 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-09 07:18:59,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:18:59,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311280084] [2024-11-09 07:18:59,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311280084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:18:59,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235578091] [2024-11-09 07:18:59,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:18:59,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:18:59,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:18:59,642 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:18:59,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 07:18:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:18:59,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 07:18:59,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:19:00,346 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-09 07:19:00,346 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:19:00,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235578091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:19:00,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:19:00,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2024-11-09 07:19:00,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189666571] [2024-11-09 07:19:00,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:19:00,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:19:00,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:19:00,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:19:00,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-09 07:19:00,349 INFO L87 Difference]: Start difference. First operand 579 states and 701 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-09 07:19:00,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:19:00,931 INFO L93 Difference]: Finished difference Result 722 states and 870 transitions. [2024-11-09 07:19:00,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:19:00,931 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 105 [2024-11-09 07:19:00,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:19:00,934 INFO L225 Difference]: With dead ends: 722 [2024-11-09 07:19:00,934 INFO L226 Difference]: Without dead ends: 492 [2024-11-09 07:19:00,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-09 07:19:00,936 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 58 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:19:00,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 152 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:19:00,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2024-11-09 07:19:01,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 435. [2024-11-09 07:19:01,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 370 states have (on average 1.1081081081081081) internal successors, (410), 375 states have internal predecessors, (410), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-09 07:19:01,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 526 transitions. [2024-11-09 07:19:01,128 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 526 transitions. Word has length 105 [2024-11-09 07:19:01,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:19:01,130 INFO L471 AbstractCegarLoop]: Abstraction has 435 states and 526 transitions. [2024-11-09 07:19:01,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-09 07:19:01,130 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 526 transitions. [2024-11-09 07:19:01,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-09 07:19:01,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:19:01,131 INFO L215 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:19:01,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-09 07:19:01,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-09 07:19:01,336 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:19:01,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:19:01,336 INFO L85 PathProgramCache]: Analyzing trace with hash 922802609, now seen corresponding path program 2 times [2024-11-09 07:19:01,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:19:01,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650914139] [2024-11-09 07:19:01,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:01,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:19:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:19:01,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1719543268] [2024-11-09 07:19:01,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:19:01,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:01,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:19:01,383 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:19:01,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 07:19:01,468 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 07:19:01,468 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:19:01,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 07:19:01,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:19:02,551 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 45 proven. 26 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2024-11-09 07:19:02,551 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:19:02,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:19:02,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650914139] [2024-11-09 07:19:02,952 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:19:02,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719543268] [2024-11-09 07:19:02,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719543268] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:19:02,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1785558639] [2024-11-09 07:19:02,954 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2024-11-09 07:19:02,955 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:19:02,955 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:19:02,955 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:19:02,955 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:19:08,913 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:19:08,919 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:19:15,214 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '20293#(and (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)) (exists ((|v_ULTIMATE.start_main_~d~0#1_198| Int) (|v_ULTIMATE.start_main_~q~0#1_103| Int)) (and (<= (+ 2147483649 (* |v_ULTIMATE.start_main_~q~0#1_103| |v_ULTIMATE.start_main_~d~0#1_198|)) 0) (<= 0 (+ |v_ULTIMATE.start_main_~q~0#1_103| 2147483648)) (<= |v_ULTIMATE.start_main_~q~0#1_103| 2147483647))))' at error location [2024-11-09 07:19:15,214 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:19:15,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:19:15,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-09 07:19:15,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511927776] [2024-11-09 07:19:15,215 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 07:19:15,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 07:19:15,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:19:15,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 07:19:15,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1155, Unknown=0, NotChecked=0, Total=1482 [2024-11-09 07:19:15,217 INFO L87 Difference]: Start difference. First operand 435 states and 526 transitions. Second operand has 10 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 5 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-09 07:19:16,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:19:16,587 INFO L93 Difference]: Finished difference Result 458 states and 557 transitions. [2024-11-09 07:19:16,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 07:19:16,588 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 5 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 105 [2024-11-09 07:19:16,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:19:16,591 INFO L225 Difference]: With dead ends: 458 [2024-11-09 07:19:16,591 INFO L226 Difference]: Without dead ends: 457 [2024-11-09 07:19:16,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 176 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=410, Invalid=1752, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 07:19:16,593 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 76 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 07:19:16,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 182 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 07:19:16,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2024-11-09 07:19:16,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 447. [2024-11-09 07:19:16,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 378 states have (on average 1.1111111111111112) internal successors, (420), 383 states have internal predecessors, (420), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-09 07:19:16,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 544 transitions. [2024-11-09 07:19:16,745 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 544 transitions. Word has length 105 [2024-11-09 07:19:16,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:19:16,746 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 544 transitions. [2024-11-09 07:19:16,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 5 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-09 07:19:16,746 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 544 transitions. [2024-11-09 07:19:16,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-09 07:19:16,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:19:16,748 INFO L215 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:19:16,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-09 07:19:16,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-09 07:19:16,948 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:19:16,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:19:16,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1457890068, now seen corresponding path program 1 times [2024-11-09 07:19:16,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:19:16,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931296485] [2024-11-09 07:19:16,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:16,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:19:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:19:16,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1171369169] [2024-11-09 07:19:16,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:16,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:16,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:19:16,982 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:19:16,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 07:19:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:17,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 07:19:17,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:19:18,739 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-09 07:19:18,740 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:19:21,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:19:21,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931296485] [2024-11-09 07:19:21,438 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:19:21,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171369169] [2024-11-09 07:19:21,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171369169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:19:21,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [542947516] [2024-11-09 07:19:21,440 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2024-11-09 07:19:21,440 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:19:21,440 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:19:21,441 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:19:21,441 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:19:23,786 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-09 07:19:23,925 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-09 07:19:28,377 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:19:28,379 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:19:38,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [542947516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:19:38,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:19:38,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [14] total 40 [2024-11-09 07:19:38,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110653672] [2024-11-09 07:19:38,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:19:38,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 07:19:38,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:19:38,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 07:19:38,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1688, Unknown=0, NotChecked=0, Total=2070 [2024-11-09 07:19:38,372 INFO L87 Difference]: Start difference. First operand 447 states and 544 transitions. Second operand has 28 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 07:19:43,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:19:43,243 INFO L93 Difference]: Finished difference Result 448 states and 545 transitions. [2024-11-09 07:19:43,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-09 07:19:43,244 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 106 [2024-11-09 07:19:43,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:19:43,246 INFO L225 Difference]: With dead ends: 448 [2024-11-09 07:19:43,246 INFO L226 Difference]: Without dead ends: 437 [2024-11-09 07:19:43,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 187 SyntacticMatches, 5 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=726, Invalid=2696, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 07:19:43,249 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 234 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 07:19:43,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 85 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 07:19:43,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-11-09 07:19:43,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 411. [2024-11-09 07:19:43,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 353 states have (on average 1.0708215297450425) internal successors, (378), 355 states have internal predecessors, (378), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-09 07:19:43,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 486 transitions. [2024-11-09 07:19:43,446 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 486 transitions. Word has length 106 [2024-11-09 07:19:43,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:19:43,447 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 486 transitions. [2024-11-09 07:19:43,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 07:19:43,447 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 486 transitions. [2024-11-09 07:19:43,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-09 07:19:43,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:19:43,449 INFO L215 NwaCegarLoop]: trace histogram [16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-09 07:19:43,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-09 07:19:43,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-09 07:19:43,653 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:19:43,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:19:43,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1296303017, now seen corresponding path program 4 times [2024-11-09 07:19:43,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:19:43,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714782079] [2024-11-09 07:19:43,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:43,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:19:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:19:43,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1995980906] [2024-11-09 07:19:43,724 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 07:19:43,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:43,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:19:43,726 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:19:43,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 07:19:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:43,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 07:19:43,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:19:46,230 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2024-11-09 07:19:46,230 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:19:48,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:19:48,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714782079] [2024-11-09 07:19:48,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:19:48,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995980906] [2024-11-09 07:19:48,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995980906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:19:48,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [669480470] [2024-11-09 07:19:48,004 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:19:48,004 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:19:48,005 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:19:48,005 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:19:48,005 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:19:53,445 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:19:53,447 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:20:43,627 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22916#true' at error location [2024-11-09 07:20:43,627 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:20:43,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:20:43,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2024-11-09 07:20:43,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209363435] [2024-11-09 07:20:43,628 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 07:20:43,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 07:20:43,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:20:43,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 07:20:43,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=1933, Unknown=20, NotChecked=0, Total=2256 [2024-11-09 07:20:43,629 INFO L87 Difference]: Start difference. First operand 411 states and 486 transitions. Second operand has 18 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 18 states have internal predecessors, (69), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-09 07:20:46,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:20:46,600 INFO L93 Difference]: Finished difference Result 462 states and 546 transitions. [2024-11-09 07:20:46,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 07:20:46,601 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 18 states have internal predecessors, (69), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 116 [2024-11-09 07:20:46,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:20:46,604 INFO L225 Difference]: With dead ends: 462 [2024-11-09 07:20:46,604 INFO L226 Difference]: Without dead ends: 461 [2024-11-09 07:20:46,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 196 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 51.8s TimeCoverageRelationStatistics Valid=325, Invalid=2105, Unknown=20, NotChecked=0, Total=2450 [2024-11-09 07:20:46,606 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 52 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-09 07:20:46,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 440 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-09 07:20:46,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2024-11-09 07:20:46,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 415. [2024-11-09 07:20:46,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 357 states have (on average 1.0700280112044818) internal successors, (382), 359 states have internal predecessors, (382), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-09 07:20:46,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 490 transitions. [2024-11-09 07:20:46,804 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 490 transitions. Word has length 116 [2024-11-09 07:20:46,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:20:46,805 INFO L471 AbstractCegarLoop]: Abstraction has 415 states and 490 transitions. [2024-11-09 07:20:46,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 18 states have internal predecessors, (69), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-09 07:20:46,805 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 490 transitions. [2024-11-09 07:20:46,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-09 07:20:46,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:20:46,807 INFO L215 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:20:46,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-09 07:20:47,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:20:47,011 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:20:47,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:20:47,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1660981074, now seen corresponding path program 1 times [2024-11-09 07:20:47,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:20:47,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103160921] [2024-11-09 07:20:47,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:47,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:20:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:47,805 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 07:20:47,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:20:47,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103160921] [2024-11-09 07:20:47,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103160921] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:20:47,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883035913] [2024-11-09 07:20:47,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:47,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:20:47,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:20:47,808 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:20:47,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 07:20:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:47,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 07:20:47,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:49,826 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 69 proven. 32 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 07:20:49,827 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:20:51,587 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 17 proven. 84 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 07:20:51,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883035913] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:20:51,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1840249386] [2024-11-09 07:20:51,589 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:20:51,589 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:20:51,590 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:20:51,590 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:20:51,590 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:20:57,511 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:20:57,514 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:21:05,844 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '24413#true' at error location [2024-11-09 07:21:05,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:21:05,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:21:05,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 27 [2024-11-09 07:21:05,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514977124] [2024-11-09 07:21:05,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:21:05,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 07:21:05,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:21:05,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 07:21:05,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=2355, Unknown=0, NotChecked=0, Total=2756 [2024-11-09 07:21:05,848 INFO L87 Difference]: Start difference. First operand 415 states and 490 transitions. Second operand has 28 states, 27 states have (on average 8.25925925925926) internal successors, (223), 28 states have internal predecessors, (223), 19 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 19 states have call predecessors, (54), 19 states have call successors, (54) [2024-11-09 07:21:13,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:21:13,452 INFO L93 Difference]: Finished difference Result 923 states and 1102 transitions. [2024-11-09 07:21:13,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-09 07:21:13,454 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 8.25925925925926) internal successors, (223), 28 states have internal predecessors, (223), 19 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 19 states have call predecessors, (54), 19 states have call successors, (54) Word has length 128 [2024-11-09 07:21:13,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:21:13,458 INFO L225 Difference]: With dead ends: 923 [2024-11-09 07:21:13,458 INFO L226 Difference]: Without dead ends: 922 [2024-11-09 07:21:13,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 336 SyntacticMatches, 7 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4061 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=1675, Invalid=9667, Unknown=0, NotChecked=0, Total=11342 [2024-11-09 07:21:13,462 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 1517 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 1650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:21:13,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 1640 Invalid, 1650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-09 07:21:13,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2024-11-09 07:21:13,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 335. [2024-11-09 07:21:13,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 286 states have (on average 1.0664335664335665) internal successors, (305), 287 states have internal predecessors, (305), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-09 07:21:13,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 397 transitions. [2024-11-09 07:21:13,654 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 397 transitions. Word has length 128 [2024-11-09 07:21:13,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:21:13,657 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 397 transitions. [2024-11-09 07:21:13,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 8.25925925925926) internal successors, (223), 28 states have internal predecessors, (223), 19 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 19 states have call predecessors, (54), 19 states have call successors, (54) [2024-11-09 07:21:13,657 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 397 transitions. [2024-11-09 07:21:13,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-09 07:21:13,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:21:13,659 INFO L215 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 07:21:13,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-09 07:21:13,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:21:13,863 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:21:13,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:21:13,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1525025616, now seen corresponding path program 1 times [2024-11-09 07:21:13,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:21:13,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162101885] [2024-11-09 07:21:13,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:13,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:21:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:14,940 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 07:21:14,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:21:14,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162101885] [2024-11-09 07:21:14,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162101885] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:21:14,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000057967] [2024-11-09 07:21:14,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:14,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:21:14,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:21:14,944 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:21:14,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-09 07:21:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:15,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 07:21:15,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:21:16,365 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 07:21:16,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:21:25,115 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 07:21:25,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000057967] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:21:25,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1138015928] [2024-11-09 07:21:25,117 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:21:25,117 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:21:25,117 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:21:25,118 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:21:25,118 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:21:27,394 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-09 07:21:27,536 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-09 07:21:31,525 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:21:31,527 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:21:38,182 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '27643#(and (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2024-11-09 07:21:38,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:21:38,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:21:38,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 8] total 30 [2024-11-09 07:21:38,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296499492] [2024-11-09 07:21:38,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:21:38,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 07:21:38,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:21:38,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 07:21:38,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=2550, Unknown=0, NotChecked=0, Total=3080 [2024-11-09 07:21:38,186 INFO L87 Difference]: Start difference. First operand 335 states and 397 transitions. Second operand has 31 states, 30 states have (on average 7.633333333333334) internal successors, (229), 31 states have internal predecessors, (229), 18 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 18 states have call predecessors, (54), 18 states have call successors, (54) [2024-11-09 07:21:46,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:21:46,074 INFO L93 Difference]: Finished difference Result 706 states and 838 transitions. [2024-11-09 07:21:46,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-09 07:21:46,075 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 7.633333333333334) internal successors, (229), 31 states have internal predecessors, (229), 18 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 18 states have call predecessors, (54), 18 states have call successors, (54) Word has length 130 [2024-11-09 07:21:46,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:21:46,078 INFO L225 Difference]: With dead ends: 706 [2024-11-09 07:21:46,078 INFO L226 Difference]: Without dead ends: 705 [2024-11-09 07:21:46,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 341 SyntacticMatches, 6 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2759 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=1191, Invalid=4661, Unknown=0, NotChecked=0, Total=5852 [2024-11-09 07:21:46,080 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 563 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:21:46,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 626 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-09 07:21:46,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2024-11-09 07:21:46,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 517. [2024-11-09 07:21:46,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 446 states have (on average 1.0695067264573992) internal successors, (477), 447 states have internal predecessors, (477), 68 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-09 07:21:46,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 613 transitions. [2024-11-09 07:21:46,351 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 613 transitions. Word has length 130 [2024-11-09 07:21:46,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:21:46,352 INFO L471 AbstractCegarLoop]: Abstraction has 517 states and 613 transitions. [2024-11-09 07:21:46,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 7.633333333333334) internal successors, (229), 31 states have internal predecessors, (229), 18 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 18 states have call predecessors, (54), 18 states have call successors, (54) [2024-11-09 07:21:46,352 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 613 transitions. [2024-11-09 07:21:46,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-09 07:21:46,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:21:46,354 INFO L215 NwaCegarLoop]: trace histogram [19, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-09 07:21:46,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-09 07:21:46,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:21:46,559 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:21:46,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:21:46,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1773347928, now seen corresponding path program 5 times [2024-11-09 07:21:46,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:21:46,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865173883] [2024-11-09 07:21:46,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:46,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:21:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:47,465 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2024-11-09 07:21:47,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:21:47,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865173883] [2024-11-09 07:21:47,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865173883] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:21:47,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573975609] [2024-11-09 07:21:47,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:21:47,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:21:47,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:21:47,469 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:21:47,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-09 07:21:47,550 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 07:21:47,550 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:21:47,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 07:21:47,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:21:52,077 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 18 proven. 29 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2024-11-09 07:21:52,078 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:21:57,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573975609] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:21:57,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [166975151] [2024-11-09 07:21:57,624 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:21:57,624 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:21:57,625 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:21:57,625 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:21:57,625 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:22:03,184 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:22:03,186 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:22:56,442 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '29173#true' at error location [2024-11-09 07:22:56,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:22:56,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:22:56,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 23 [2024-11-09 07:22:56,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382898722] [2024-11-09 07:22:56,443 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:22:56,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 07:22:56,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:22:56,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 07:22:56,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=2594, Unknown=20, NotChecked=0, Total=2970 [2024-11-09 07:22:56,445 INFO L87 Difference]: Start difference. First operand 517 states and 613 transitions. Second operand has 24 states, 22 states have (on average 5.7727272727272725) internal successors, (127), 23 states have internal predecessors, (127), 8 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 9 states have call predecessors, (26), 8 states have call successors, (26) [2024-11-09 07:23:04,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:23:04,533 INFO L93 Difference]: Finished difference Result 816 states and 965 transitions. [2024-11-09 07:23:04,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-09 07:23:04,534 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 5.7727272727272725) internal successors, (127), 23 states have internal predecessors, (127), 8 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 9 states have call predecessors, (26), 8 states have call successors, (26) Word has length 133 [2024-11-09 07:23:04,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:23:04,537 INFO L225 Difference]: With dead ends: 816 [2024-11-09 07:23:04,538 INFO L226 Difference]: Without dead ends: 690 [2024-11-09 07:23:04,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 236 SyntacticMatches, 5 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1594 ImplicationChecksByTransitivity, 60.0s TimeCoverageRelationStatistics Valid=568, Invalid=4668, Unknown=20, NotChecked=0, Total=5256 [2024-11-09 07:23:04,540 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 139 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 2114 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 2155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:23:04,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 723 Invalid, 2155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2114 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-09 07:23:04,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2024-11-09 07:23:04,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 516. [2024-11-09 07:23:04,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 446 states have (on average 1.0672645739910314) internal successors, (476), 447 states have internal predecessors, (476), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-09 07:23:04,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 610 transitions. [2024-11-09 07:23:04,774 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 610 transitions. Word has length 133 [2024-11-09 07:23:04,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:23:04,775 INFO L471 AbstractCegarLoop]: Abstraction has 516 states and 610 transitions. [2024-11-09 07:23:04,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 5.7727272727272725) internal successors, (127), 23 states have internal predecessors, (127), 8 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 9 states have call predecessors, (26), 8 states have call successors, (26) [2024-11-09 07:23:04,775 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 610 transitions. [2024-11-09 07:23:04,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-09 07:23:04,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:23:04,777 INFO L215 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-09 07:23:04,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-09 07:23:04,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:23:04,978 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:23:04,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:23:04,978 INFO L85 PathProgramCache]: Analyzing trace with hash -686900159, now seen corresponding path program 1 times [2024-11-09 07:23:04,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:23:04,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989014636] [2024-11-09 07:23:04,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:23:04,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:23:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:23:05,864 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 07:23:05,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:23:05,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989014636] [2024-11-09 07:23:05,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989014636] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:23:05,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617500121] [2024-11-09 07:23:05,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:23:05,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:23:05,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:23:05,866 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:23:05,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-09 07:23:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:23:05,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 07:23:05,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:23:07,952 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 07:23:07,952 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:23:08,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617500121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:23:08,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [73984293] [2024-11-09 07:23:08,765 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:23:08,765 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:23:08,765 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:23:08,765 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:23:08,765 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:23:14,422 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:23:14,424 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:23:21,971 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '31304#true' at error location [2024-11-09 07:23:21,972 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:23:21,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:23:21,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2024-11-09 07:23:21,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760333798] [2024-11-09 07:23:21,972 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:23:21,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 07:23:21,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:23:21,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 07:23:21,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=2428, Unknown=0, NotChecked=0, Total=2756 [2024-11-09 07:23:21,974 INFO L87 Difference]: Start difference. First operand 516 states and 610 transitions. Second operand has 25 states, 24 states have (on average 6.791666666666667) internal successors, (163), 25 states have internal predecessors, (163), 11 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2024-11-09 07:23:27,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:23:27,547 INFO L93 Difference]: Finished difference Result 1052 states and 1242 transitions. [2024-11-09 07:23:27,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 07:23:27,548 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 6.791666666666667) internal successors, (163), 25 states have internal predecessors, (163), 11 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) Word has length 135 [2024-11-09 07:23:27,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:23:27,550 INFO L225 Difference]: With dead ends: 1052 [2024-11-09 07:23:27,550 INFO L226 Difference]: Without dead ends: 1051 [2024-11-09 07:23:27,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 241 SyntacticMatches, 7 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2326 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=705, Invalid=5457, Unknown=0, NotChecked=0, Total=6162 [2024-11-09 07:23:27,552 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 366 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 1898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:23:27,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 944 Invalid, 1898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-09 07:23:27,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2024-11-09 07:23:27,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 461. [2024-11-09 07:23:27,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 399 states have (on average 1.0676691729323309) internal successors, (426), 400 states have internal predecessors, (426), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-09 07:23:27,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 544 transitions. [2024-11-09 07:23:27,783 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 544 transitions. Word has length 135 [2024-11-09 07:23:27,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:23:27,783 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 544 transitions. [2024-11-09 07:23:27,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 6.791666666666667) internal successors, (163), 25 states have internal predecessors, (163), 11 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2024-11-09 07:23:27,784 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 544 transitions. [2024-11-09 07:23:27,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-09 07:23:27,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:23:27,786 INFO L215 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1] [2024-11-09 07:23:27,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-09 07:23:27,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:23:27,987 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:23:27,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:23:27,987 INFO L85 PathProgramCache]: Analyzing trace with hash -408499589, now seen corresponding path program 6 times [2024-11-09 07:23:27,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:23:27,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23188411] [2024-11-09 07:23:27,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:23:27,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:23:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:23:29,111 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 07:23:29,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:23:29,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23188411] [2024-11-09 07:23:29,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23188411] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:23:29,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080983649] [2024-11-09 07:23:29,112 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 07:23:29,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:23:29,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:23:29,113 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:23:29,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-09 07:23:29,236 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 07:23:29,236 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:23:29,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 07:23:29,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:23:32,563 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 31 proven. 127 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2024-11-09 07:23:32,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:23:37,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080983649] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:23:37,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2129967150] [2024-11-09 07:23:37,969 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:23:37,969 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:23:37,969 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:23:37,969 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:23:37,970 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:23:40,404 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:23:40,406 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:23:54,738 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '34159#(exists ((|v_ULTIMATE.start_main_~r~0#1_143| Int) (|v_ULTIMATE.start_main_~q~0#1_152| Int) (|v_ULTIMATE.start_main_~B~0#1_59| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~d~0#1| |v_ULTIMATE.start_main_~r~0#1_143|)) (<= 2147483648 (+ |v_ULTIMATE.start_main_~q~0#1_152| |v_ULTIMATE.start_main_~r~0#1_143|)) (= |v_ULTIMATE.start_main_~B~0#1_59| 1) (<= |v_ULTIMATE.start_main_~r~0#1_143| 2147483647) (<= |ULTIMATE.start_main_~A~0#1| 10) (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= |v_ULTIMATE.start_main_~q~0#1_152| 2147483647)))' at error location [2024-11-09 07:23:54,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:23:54,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:23:54,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19] total 32 [2024-11-09 07:23:54,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556251048] [2024-11-09 07:23:54,739 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:23:54,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 07:23:54,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:23:54,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 07:23:54,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=3481, Unknown=3, NotChecked=0, Total=3782 [2024-11-09 07:23:54,741 INFO L87 Difference]: Start difference. First operand 461 states and 544 transitions. Second operand has 33 states, 31 states have (on average 5.548387096774194) internal successors, (172), 33 states have internal predecessors, (172), 14 states have call successors, (36), 1 states have call predecessors, (36), 2 states have return successors, (36), 16 states have call predecessors, (36), 14 states have call successors, (36) [2024-11-09 07:24:00,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:24:00,554 INFO L93 Difference]: Finished difference Result 763 states and 897 transitions. [2024-11-09 07:24:00,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 07:24:00,555 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 5.548387096774194) internal successors, (172), 33 states have internal predecessors, (172), 14 states have call successors, (36), 1 states have call predecessors, (36), 2 states have return successors, (36), 16 states have call predecessors, (36), 14 states have call successors, (36) Word has length 139 [2024-11-09 07:24:00,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:24:00,557 INFO L225 Difference]: With dead ends: 763 [2024-11-09 07:24:00,557 INFO L226 Difference]: Without dead ends: 762 [2024-11-09 07:24:00,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 236 SyntacticMatches, 13 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3413 ImplicationChecksByTransitivity, 22.3s TimeCoverageRelationStatistics Valid=641, Invalid=7366, Unknown=3, NotChecked=0, Total=8010 [2024-11-09 07:24:00,560 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 287 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1997 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:24:00,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 700 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1997 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-09 07:24:00,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2024-11-09 07:24:00,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 499. [2024-11-09 07:24:00,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 433 states have (on average 1.0669745958429562) internal successors, (462), 434 states have internal predecessors, (462), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2024-11-09 07:24:00,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 588 transitions. [2024-11-09 07:24:00,827 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 588 transitions. Word has length 139 [2024-11-09 07:24:00,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:24:00,828 INFO L471 AbstractCegarLoop]: Abstraction has 499 states and 588 transitions. [2024-11-09 07:24:00,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 5.548387096774194) internal successors, (172), 33 states have internal predecessors, (172), 14 states have call successors, (36), 1 states have call predecessors, (36), 2 states have return successors, (36), 16 states have call predecessors, (36), 14 states have call successors, (36) [2024-11-09 07:24:00,828 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 588 transitions. [2024-11-09 07:24:00,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-09 07:24:00,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:24:00,830 INFO L215 NwaCegarLoop]: trace histogram [17, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-09 07:24:00,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-09 07:24:01,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-09 07:24:01,031 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:24:01,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:24:01,032 INFO L85 PathProgramCache]: Analyzing trace with hash -573229902, now seen corresponding path program 2 times [2024-11-09 07:24:01,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:24:01,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75903130] [2024-11-09 07:24:01,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:24:01,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:24:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:02,144 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 3 proven. 144 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-09 07:24:02,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:24:02,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75903130] [2024-11-09 07:24:02,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75903130] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:24:02,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628960433] [2024-11-09 07:24:02,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:24:02,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:02,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:24:02,147 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:24:02,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-09 07:24:02,235 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 07:24:02,235 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:24:02,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 07:24:02,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:24:03,520 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-11-09 07:24:03,520 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:24:03,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628960433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:24:03,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:24:03,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 24 [2024-11-09 07:24:03,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957029741] [2024-11-09 07:24:03,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:24:03,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 07:24:03,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:24:03,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 07:24:03,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2024-11-09 07:24:03,523 INFO L87 Difference]: Start difference. First operand 499 states and 588 transitions. Second operand has 10 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 07:24:04,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:24:04,377 INFO L93 Difference]: Finished difference Result 504 states and 595 transitions. [2024-11-09 07:24:04,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 07:24:04,378 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 141 [2024-11-09 07:24:04,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:24:04,379 INFO L225 Difference]: With dead ends: 504 [2024-11-09 07:24:04,379 INFO L226 Difference]: Without dead ends: 503 [2024-11-09 07:24:04,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2024-11-09 07:24:04,380 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 64 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:24:04,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 33 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 07:24:04,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2024-11-09 07:24:04,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 263. [2024-11-09 07:24:04,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 222 states have (on average 1.054054054054054) internal successors, (234), 222 states have internal predecessors, (234), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-09 07:24:04,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 312 transitions. [2024-11-09 07:24:04,532 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 312 transitions. Word has length 141 [2024-11-09 07:24:04,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:24:04,532 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 312 transitions. [2024-11-09 07:24:04,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 07:24:04,533 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 312 transitions. [2024-11-09 07:24:04,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-09 07:24:04,534 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:24:04,534 INFO L215 NwaCegarLoop]: trace histogram [23, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-09 07:24:04,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-09 07:24:04,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:04,735 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:24:04,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:24:04,735 INFO L85 PathProgramCache]: Analyzing trace with hash 948030233, now seen corresponding path program 2 times [2024-11-09 07:24:04,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:24:04,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365286942] [2024-11-09 07:24:04,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:24:04,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:24:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:06,144 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2024-11-09 07:24:06,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:24:06,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365286942] [2024-11-09 07:24:06,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365286942] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:24:06,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951000315] [2024-11-09 07:24:06,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:24:06,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:06,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:24:06,147 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:24:06,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-09 07:24:06,224 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 07:24:06,224 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:24:06,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 07:24:06,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:24:07,434 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 40 proven. 22 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2024-11-09 07:24:07,434 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:24:12,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951000315] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:24:12,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [294044603] [2024-11-09 07:24:12,021 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:24:12,021 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:24:12,021 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:24:12,021 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:24:12,022 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:24:17,710 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:24:17,712 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:24:25,763 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '37677#(and (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2024-11-09 07:24:25,763 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:24:25,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:24:25,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10] total 25 [2024-11-09 07:24:25,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529214234] [2024-11-09 07:24:25,764 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:24:25,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 07:24:25,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:24:25,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 07:24:25,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=488, Invalid=2592, Unknown=0, NotChecked=0, Total=3080 [2024-11-09 07:24:25,766 INFO L87 Difference]: Start difference. First operand 263 states and 312 transitions. Second operand has 26 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 10 states have call successors, (30), 1 states have call predecessors, (30), 2 states have return successors, (30), 11 states have call predecessors, (30), 10 states have call successors, (30) [2024-11-09 07:24:32,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:24:32,819 INFO L93 Difference]: Finished difference Result 430 states and 506 transitions. [2024-11-09 07:24:32,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-09 07:24:32,820 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 10 states have call successors, (30), 1 states have call predecessors, (30), 2 states have return successors, (30), 11 states have call predecessors, (30), 10 states have call successors, (30) Word has length 166 [2024-11-09 07:24:32,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:24:32,821 INFO L225 Difference]: With dead ends: 430 [2024-11-09 07:24:32,821 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 07:24:32,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 296 SyntacticMatches, 8 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4360 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=2161, Invalid=9829, Unknown=0, NotChecked=0, Total=11990 [2024-11-09 07:24:32,824 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 540 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-09 07:24:32,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 136 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-09 07:24:32,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 07:24:32,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 07:24:32,825 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 07:24:32,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 07:24:32,825 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 166 [2024-11-09 07:24:32,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:24:32,826 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 07:24:32,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 10 states have call successors, (30), 1 states have call predecessors, (30), 2 states have return successors, (30), 11 states have call predecessors, (30), 10 states have call successors, (30) [2024-11-09 07:24:32,826 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 07:24:32,826 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 07:24:32,830 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 24 remaining) [2024-11-09 07:24:32,830 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 24 remaining) [2024-11-09 07:24:32,831 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 24 remaining) [2024-11-09 07:24:32,831 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 24 remaining) [2024-11-09 07:24:32,831 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 24 remaining) [2024-11-09 07:24:32,831 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 24 remaining) [2024-11-09 07:24:32,832 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 24 remaining) [2024-11-09 07:24:32,832 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 24 remaining) [2024-11-09 07:24:32,832 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 24 remaining) [2024-11-09 07:24:32,832 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 24 remaining) [2024-11-09 07:24:32,832 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 24 remaining) [2024-11-09 07:24:32,832 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 24 remaining) [2024-11-09 07:24:32,832 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 24 remaining) [2024-11-09 07:24:32,833 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 24 remaining) [2024-11-09 07:24:32,833 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 24 remaining) [2024-11-09 07:24:32,833 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 24 remaining) [2024-11-09 07:24:32,833 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 24 remaining) [2024-11-09 07:24:32,833 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 24 remaining) [2024-11-09 07:24:32,833 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 24 remaining) [2024-11-09 07:24:32,834 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 24 remaining) [2024-11-09 07:24:32,834 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 24 remaining) [2024-11-09 07:24:32,834 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 24 remaining) [2024-11-09 07:24:32,834 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 24 remaining) [2024-11-09 07:24:32,834 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 24 remaining) [2024-11-09 07:24:32,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-09 07:24:33,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ea2e568-dcf3-45c3-8c76-19a4bd6e91f2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:33,038 INFO L407 BasicCegarLoop]: Path program histogram: [6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:24:33,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.