./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/sync-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/sync-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e7697c01e3a1f85ac80bd14b522b9965578a432aca56ec235ad1a5127dc83a85 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:57:13,313 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:57:13,383 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-24 23:57:13,390 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:57:13,391 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:57:13,418 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:57:13,419 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:57:13,420 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:57:13,421 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:57:13,422 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:57:13,422 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:57:13,423 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:57:13,424 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:57:13,424 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:57:13,425 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:57:13,426 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:57:13,426 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:57:13,427 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:57:13,428 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:57:13,428 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:57:13,429 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:57:13,430 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:57:13,431 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:57:13,431 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:57:13,432 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:57:13,432 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:57:13,433 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:57:13,433 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:57:13,434 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:57:13,435 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:57:13,435 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:57:13,436 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:57:13,436 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:57:13,437 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:57:13,437 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:57:13,438 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:57:13,438 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:57:13,439 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:57:13,439 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:57:13,440 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:57:13,440 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:57:13,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:57:13,441 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:57:13,441 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:57:13,442 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:57:13,442 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:57:13,443 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_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7697c01e3a1f85ac80bd14b522b9965578a432aca56ec235ad1a5127dc83a85 [2023-11-24 23:57:13,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:57:13,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:57:13,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:57:13,734 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:57:13,736 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:57:13,737 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/busybox-1.22.0/sync-1.i [2023-11-24 23:57:16,971 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:57:17,379 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:57:17,382 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/sv-benchmarks/c/busybox-1.22.0/sync-1.i [2023-11-24 23:57:17,427 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/data/037a6141d/dd83106c350c43ccaf1dbd0f87e64f60/FLAG2c1943994 [2023-11-24 23:57:17,448 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/data/037a6141d/dd83106c350c43ccaf1dbd0f87e64f60 [2023-11-24 23:57:17,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:57:17,457 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:57:17,460 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:57:17,461 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:57:17,466 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:57:17,469 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:57:17" (1/1) ... [2023-11-24 23:57:17,470 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@708af6a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:17, skipping insertion in model container [2023-11-24 23:57:17,470 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:57:17" (1/1) ... [2023-11-24 23:57:17,561 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:57:18,715 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:57:18,737 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:57:18,891 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:57:19,072 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:57:19,081 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:57:19,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:19 WrapperNode [2023-11-24 23:57:19,082 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:57:19,083 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:57:19,084 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:57:19,084 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:57:19,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:19" (1/1) ... [2023-11-24 23:57:19,167 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:19" (1/1) ... [2023-11-24 23:57:19,246 INFO L138 Inliner]: procedures = 540, calls = 133, calls flagged for inlining = 16, calls inlined = 15, statements flattened = 461 [2023-11-24 23:57:19,259 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:57:19,260 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:57:19,260 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:57:19,261 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:57:19,273 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:19" (1/1) ... [2023-11-24 23:57:19,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:19" (1/1) ... [2023-11-24 23:57:19,286 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:19" (1/1) ... [2023-11-24 23:57:19,287 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:19" (1/1) ... [2023-11-24 23:57:19,312 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:19" (1/1) ... [2023-11-24 23:57:19,318 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:19" (1/1) ... [2023-11-24 23:57:19,330 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:19" (1/1) ... [2023-11-24 23:57:19,349 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:19" (1/1) ... [2023-11-24 23:57:19,373 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:57:19,374 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:57:19,374 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:57:19,375 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:57:19,376 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:19" (1/1) ... [2023-11-24 23:57:19,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:57:19,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:57:19,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:57:19,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:57:19,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:57:19,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-24 23:57:19,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:57:19,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:57:19,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:57:19,451 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-24 23:57:19,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:57:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:57:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:57:19,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:57:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-24 23:57:19,454 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-24 23:57:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-24 23:57:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-24 23:57:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:57:19,455 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:57:19,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:57:19,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:57:19,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:57:19,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:57:19,902 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:57:19,904 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:57:20,534 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:57:20,653 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:57:20,654 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-24 23:57:20,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:57:20 BoogieIcfgContainer [2023-11-24 23:57:20,657 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:57:20,660 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:57:20,661 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:57:20,665 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:57:20,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:57:17" (1/3) ... [2023-11-24 23:57:20,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2b88f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:57:20, skipping insertion in model container [2023-11-24 23:57:20,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:57:19" (2/3) ... [2023-11-24 23:57:20,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2b88f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:57:20, skipping insertion in model container [2023-11-24 23:57:20,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:57:20" (3/3) ... [2023-11-24 23:57:20,670 INFO L112 eAbstractionObserver]: Analyzing ICFG sync-1.i [2023-11-24 23:57:20,691 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:57:20,692 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 40 error locations. [2023-11-24 23:57:20,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:57:20,763 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@528a97cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:57:20,763 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-11-24 23:57:20,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 84 states have (on average 1.7738095238095237) internal successors, (149), 124 states have internal predecessors, (149), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 23:57:20,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:57:20,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:20,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 23:57:20,780 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-24 23:57:20,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:20,786 INFO L85 PathProgramCache]: Analyzing trace with hash 413295, now seen corresponding path program 1 times [2023-11-24 23:57:20,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:57:20,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074667549] [2023-11-24 23:57:20,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:20,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:57:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:21,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:57:21,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:57:21,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074667549] [2023-11-24 23:57:21,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074667549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:57:21,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:57:21,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:57:21,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632829358] [2023-11-24 23:57:21,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:57:21,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:57:21,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:57:21,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:57:21,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:57:21,492 INFO L87 Difference]: Start difference. First operand has 134 states, 84 states have (on average 1.7738095238095237) internal successors, (149), 124 states have internal predecessors, (149), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:57:21,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:57:21,664 INFO L93 Difference]: Finished difference Result 267 states and 329 transitions. [2023-11-24 23:57:21,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:57:21,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-24 23:57:21,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:57:21,680 INFO L225 Difference]: With dead ends: 267 [2023-11-24 23:57:21,681 INFO L226 Difference]: Without dead ends: 136 [2023-11-24 23:57:21,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:57:21,691 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 1 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:57:21,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 270 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:57:21,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-11-24 23:57:21,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2023-11-24 23:57:21,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 87 states have (on average 1.7126436781609196) internal successors, (149), 126 states have internal predecessors, (149), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 23:57:21,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 163 transitions. [2023-11-24 23:57:21,775 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 163 transitions. Word has length 3 [2023-11-24 23:57:21,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:57:21,775 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 163 transitions. [2023-11-24 23:57:21,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:57:21,777 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 163 transitions. [2023-11-24 23:57:21,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:57:21,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:21,779 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-24 23:57:21,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:57:21,780 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-24 23:57:21,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:21,781 INFO L85 PathProgramCache]: Analyzing trace with hash -572364169, now seen corresponding path program 1 times [2023-11-24 23:57:21,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:57:21,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508387210] [2023-11-24 23:57:21,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:21,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:57:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:21,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:57:21,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:57:21,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508387210] [2023-11-24 23:57:21,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508387210] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:57:21,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814234651] [2023-11-24 23:57:21,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:21,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:21,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:57:21,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:57:21,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:57:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:22,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:57:22,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:57:22,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:57:22,178 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:57:22,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814234651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:57:22,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:57:22,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-24 23:57:22,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653328774] [2023-11-24 23:57:22,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:57:22,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:57:22,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:57:22,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:57:22,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:57:22,182 INFO L87 Difference]: Start difference. First operand 136 states and 163 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:57:22,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:57:22,257 INFO L93 Difference]: Finished difference Result 136 states and 163 transitions. [2023-11-24 23:57:22,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:57:22,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-24 23:57:22,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:57:22,259 INFO L225 Difference]: With dead ends: 136 [2023-11-24 23:57:22,259 INFO L226 Difference]: Without dead ends: 135 [2023-11-24 23:57:22,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:57:22,261 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 3 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:57:22,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 268 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:57:22,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-24 23:57:22,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2023-11-24 23:57:22,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 87 states have (on average 1.7011494252873562) internal successors, (148), 125 states have internal predecessors, (148), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 23:57:22,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 162 transitions. [2023-11-24 23:57:22,273 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 162 transitions. Word has length 6 [2023-11-24 23:57:22,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:57:22,274 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 162 transitions. [2023-11-24 23:57:22,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:57:22,274 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 162 transitions. [2023-11-24 23:57:22,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:57:22,275 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:22,275 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-24 23:57:22,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:57:22,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:22,482 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-24 23:57:22,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:22,482 INFO L85 PathProgramCache]: Analyzing trace with hash -563419988, now seen corresponding path program 1 times [2023-11-24 23:57:22,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:57:22,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154235827] [2023-11-24 23:57:22,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:22,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:57:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:22,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:57:22,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:57:22,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154235827] [2023-11-24 23:57:22,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154235827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:57:22,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:57:22,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:57:22,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941710257] [2023-11-24 23:57:22,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:57:22,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:57:22,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:57:22,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:57:22,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:57:22,624 INFO L87 Difference]: Start difference. First operand 135 states and 162 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:57:22,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:57:22,702 INFO L93 Difference]: Finished difference Result 135 states and 162 transitions. [2023-11-24 23:57:22,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:57:22,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-24 23:57:22,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:57:22,704 INFO L225 Difference]: With dead ends: 135 [2023-11-24 23:57:22,704 INFO L226 Difference]: Without dead ends: 134 [2023-11-24 23:57:22,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:57:22,706 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 0 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:57:22,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 268 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:57:22,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-11-24 23:57:22,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 132. [2023-11-24 23:57:22,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 85 states have (on average 1.7058823529411764) internal successors, (145), 122 states have internal predecessors, (145), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 23:57:22,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 159 transitions. [2023-11-24 23:57:22,718 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 159 transitions. Word has length 7 [2023-11-24 23:57:22,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:57:22,718 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 159 transitions. [2023-11-24 23:57:22,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:57:22,719 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 159 transitions. [2023-11-24 23:57:22,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:57:22,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:22,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:57:22,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:57:22,720 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-24 23:57:22,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:22,720 INFO L85 PathProgramCache]: Analyzing trace with hash 81727614, now seen corresponding path program 1 times [2023-11-24 23:57:22,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:57:22,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274868502] [2023-11-24 23:57:22,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:22,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:57:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:22,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:57:22,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:57:22,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274868502] [2023-11-24 23:57:22,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274868502] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:57:22,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670977402] [2023-11-24 23:57:22,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:22,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:22,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:57:22,827 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:57:22,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:57:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:23,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:57:23,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:57:23,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:57:23,057 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:57:23,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670977402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:57:23,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:57:23,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:57:23,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941235759] [2023-11-24 23:57:23,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:57:23,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:57:23,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:57:23,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:57:23,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:57:23,062 INFO L87 Difference]: Start difference. First operand 132 states and 159 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, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:57:23,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:57:23,125 INFO L93 Difference]: Finished difference Result 132 states and 159 transitions. [2023-11-24 23:57:23,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:57:23,126 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, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-24 23:57:23,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:57:23,127 INFO L225 Difference]: With dead ends: 132 [2023-11-24 23:57:23,127 INFO L226 Difference]: Without dead ends: 130 [2023-11-24 23:57:23,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:57:23,129 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 131 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:57:23,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 142 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:57:23,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-24 23:57:23,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2023-11-24 23:57:23,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 85 states have (on average 1.6823529411764706) internal successors, (143), 120 states have internal predecessors, (143), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 23:57:23,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 157 transitions. [2023-11-24 23:57:23,140 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 157 transitions. Word has length 9 [2023-11-24 23:57:23,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:57:23,141 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 157 transitions. [2023-11-24 23:57:23,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:57:23,141 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 157 transitions. [2023-11-24 23:57:23,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:57:23,142 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:23,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:57:23,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:57:23,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:23,348 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-24 23:57:23,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:23,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1761411186, now seen corresponding path program 1 times [2023-11-24 23:57:23,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:57:23,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891012118] [2023-11-24 23:57:23,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:23,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:57:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:23,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:57:23,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:57:23,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891012118] [2023-11-24 23:57:23,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891012118] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:57:23,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600213175] [2023-11-24 23:57:23,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:23,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:23,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:57:23,445 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:57:23,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:57:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:23,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:57:23,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:57:23,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:57:23,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:57:23,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:57:23,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600213175] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:57:23,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1936119536] [2023-11-24 23:57:23,700 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-24 23:57:23,700 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:57:23,706 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:57:23,712 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:57:23,712 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:57:25,893 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 80 for LOIs [2023-11-24 23:57:25,926 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:57:26,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1936119536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:57:26,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:57:26,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 3, 4] total 14 [2023-11-24 23:57:26,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306650546] [2023-11-24 23:57:26,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:57:26,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 23:57:26,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:57:26,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 23:57:26,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-24 23:57:26,816 INFO L87 Difference]: Start difference. First operand 130 states and 157 transitions. Second operand has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:57:27,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:57:27,588 INFO L93 Difference]: Finished difference Result 132 states and 158 transitions. [2023-11-24 23:57:27,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:57:27,589 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-11-24 23:57:27,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:57:27,590 INFO L225 Difference]: With dead ends: 132 [2023-11-24 23:57:27,591 INFO L226 Difference]: Without dead ends: 130 [2023-11-24 23:57:27,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-24 23:57:27,592 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 6 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 23:57:27,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 551 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 23:57:27,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-24 23:57:27,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2023-11-24 23:57:27,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 86 states have (on average 1.6511627906976745) internal successors, (142), 119 states have internal predecessors, (142), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 23:57:27,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 156 transitions. [2023-11-24 23:57:27,607 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 156 transitions. Word has length 10 [2023-11-24 23:57:27,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:57:27,608 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 156 transitions. [2023-11-24 23:57:27,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:57:27,608 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 156 transitions. [2023-11-24 23:57:27,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 23:57:27,609 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:27,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:57:27,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-24 23:57:27,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:27,816 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-24 23:57:27,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:27,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1799002485, now seen corresponding path program 1 times [2023-11-24 23:57:27,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:57:27,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308559973] [2023-11-24 23:57:27,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:27,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:57:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:27,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:57:27,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:57:27,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308559973] [2023-11-24 23:57:27,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308559973] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:57:27,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865712371] [2023-11-24 23:57:27,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:27,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:27,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:57:27,989 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:57:28,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:57:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:28,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:57:28,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:57:28,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:57:28,206 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:57:28,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865712371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:57:28,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:57:28,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:57:28,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531689951] [2023-11-24 23:57:28,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:57:28,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:57:28,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:57:28,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:57:28,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:57:28,209 INFO L87 Difference]: Start difference. First operand 130 states and 156 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:57:28,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:57:28,283 INFO L93 Difference]: Finished difference Result 130 states and 156 transitions. [2023-11-24 23:57:28,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:57:28,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-24 23:57:28,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:57:28,286 INFO L225 Difference]: With dead ends: 130 [2023-11-24 23:57:28,286 INFO L226 Difference]: Without dead ends: 129 [2023-11-24 23:57:28,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:57:28,289 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 2 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:57:28,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 255 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:57:28,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-24 23:57:28,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-11-24 23:57:28,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 86 states have (on average 1.6395348837209303) internal successors, (141), 118 states have internal predecessors, (141), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 23:57:28,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 155 transitions. [2023-11-24 23:57:28,317 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 155 transitions. Word has length 15 [2023-11-24 23:57:28,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:57:28,318 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 155 transitions. [2023-11-24 23:57:28,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:57:28,318 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 155 transitions. [2023-11-24 23:57:28,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 23:57:28,319 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:28,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:57:28,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:57:28,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-24 23:57:28,527 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-24 23:57:28,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:28,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1798991936, now seen corresponding path program 1 times [2023-11-24 23:57:28,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:57:28,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49114037] [2023-11-24 23:57:28,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:28,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:57:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:28,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:57:28,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:57:28,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49114037] [2023-11-24 23:57:28,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49114037] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:57:28,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880405280] [2023-11-24 23:57:28,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:28,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:28,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:57:28,658 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:57:28,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:57:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:28,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:57:28,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:57:28,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:57:28,887 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:57:28,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880405280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:57:28,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:57:28,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:57:28,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605889637] [2023-11-24 23:57:28,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:57:28,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:57:28,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:57:28,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:57:28,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:57:28,893 INFO L87 Difference]: Start difference. First operand 129 states and 155 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:57:28,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:57:28,969 INFO L93 Difference]: Finished difference Result 129 states and 155 transitions. [2023-11-24 23:57:28,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:57:28,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-24 23:57:28,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:57:28,971 INFO L225 Difference]: With dead ends: 129 [2023-11-24 23:57:28,971 INFO L226 Difference]: Without dead ends: 128 [2023-11-24 23:57:28,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:57:28,975 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 6 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:57:28,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 248 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:57:28,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-11-24 23:57:28,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2023-11-24 23:57:28,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 86 states have (on average 1.627906976744186) internal successors, (140), 117 states have internal predecessors, (140), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 23:57:28,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 154 transitions. [2023-11-24 23:57:28,988 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 154 transitions. Word has length 15 [2023-11-24 23:57:28,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:57:28,988 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 154 transitions. [2023-11-24 23:57:28,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:57:28,989 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 154 transitions. [2023-11-24 23:57:28,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 23:57:28,989 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:28,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:57:28,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:57:29,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:29,197 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-24 23:57:29,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:29,197 INFO L85 PathProgramCache]: Analyzing trace with hash 65497914, now seen corresponding path program 1 times [2023-11-24 23:57:29,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:57:29,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922137437] [2023-11-24 23:57:29,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:29,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:57:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:29,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:57:29,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:57:29,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922137437] [2023-11-24 23:57:29,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922137437] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:57:29,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353381572] [2023-11-24 23:57:29,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:29,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:29,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:57:29,355 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:57:29,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:57:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:29,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:57:29,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:57:29,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:57:29,579 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:57:29,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353381572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:57:29,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:57:29,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:57:29,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492680302] [2023-11-24 23:57:29,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:57:29,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:57:29,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:57:29,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:57:29,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:57:29,582 INFO L87 Difference]: Start difference. First operand 128 states and 154 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:57:29,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:57:29,655 INFO L93 Difference]: Finished difference Result 247 states and 300 transitions. [2023-11-24 23:57:29,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:57:29,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-24 23:57:29,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:57:29,656 INFO L225 Difference]: With dead ends: 247 [2023-11-24 23:57:29,657 INFO L226 Difference]: Without dead ends: 131 [2023-11-24 23:57:29,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:57:29,658 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 0 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:57:29,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 254 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:57:29,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-24 23:57:29,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2023-11-24 23:57:29,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 89 states have (on average 1.6067415730337078) internal successors, (143), 120 states have internal predecessors, (143), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 23:57:29,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 157 transitions. [2023-11-24 23:57:29,668 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 157 transitions. Word has length 16 [2023-11-24 23:57:29,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:57:29,668 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 157 transitions. [2023-11-24 23:57:29,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:57:29,669 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 157 transitions. [2023-11-24 23:57:29,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-24 23:57:29,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:29,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:57:29,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:57:29,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:29,876 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-24 23:57:29,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:29,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1923250208, now seen corresponding path program 1 times [2023-11-24 23:57:29,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:57:29,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140827592] [2023-11-24 23:57:29,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:29,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:57:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:30,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:57:30,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:57:30,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140827592] [2023-11-24 23:57:30,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140827592] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:57:30,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955969013] [2023-11-24 23:57:30,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:30,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:30,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:57:30,016 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:57:30,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:57:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:30,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:57:30,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:57:30,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:57:30,230 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:57:30,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955969013] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:57:30,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:57:30,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:57:30,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700275412] [2023-11-24 23:57:30,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:57:30,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:57:30,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:57:30,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:57:30,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:57:30,233 INFO L87 Difference]: Start difference. First operand 131 states and 157 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:57:30,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:57:30,297 INFO L93 Difference]: Finished difference Result 131 states and 157 transitions. [2023-11-24 23:57:30,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:57:30,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-11-24 23:57:30,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:57:30,300 INFO L225 Difference]: With dead ends: 131 [2023-11-24 23:57:30,300 INFO L226 Difference]: Without dead ends: 130 [2023-11-24 23:57:30,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:57:30,301 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 2 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:57:30,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 252 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:57:30,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-24 23:57:30,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2023-11-24 23:57:30,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 89 states have (on average 1.595505617977528) internal successors, (142), 119 states have internal predecessors, (142), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 23:57:30,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 156 transitions. [2023-11-24 23:57:30,311 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 156 transitions. Word has length 17 [2023-11-24 23:57:30,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:57:30,311 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 156 transitions. [2023-11-24 23:57:30,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:57:30,311 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 156 transitions. [2023-11-24 23:57:30,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-24 23:57:30,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:30,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:57:30,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-24 23:57:30,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-24 23:57:30,519 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-24 23:57:30,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:30,519 INFO L85 PathProgramCache]: Analyzing trace with hash 508786096, now seen corresponding path program 1 times [2023-11-24 23:57:30,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:57:30,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574960648] [2023-11-24 23:57:30,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:30,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:57:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:30,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:57:30,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:57:30,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574960648] [2023-11-24 23:57:30,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574960648] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:57:30,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824179409] [2023-11-24 23:57:30,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:30,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:30,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:57:30,662 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:57:30,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 23:57:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:30,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:57:30,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:57:30,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:57:30,880 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:57:30,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824179409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:57:30,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:57:30,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:57:30,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235732219] [2023-11-24 23:57:30,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:57:30,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:57:30,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:57:30,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:57:30,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:57:30,883 INFO L87 Difference]: Start difference. First operand 130 states and 156 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:57:30,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:57:30,947 INFO L93 Difference]: Finished difference Result 134 states and 160 transitions. [2023-11-24 23:57:30,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:57:30,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-11-24 23:57:30,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:57:30,949 INFO L225 Difference]: With dead ends: 134 [2023-11-24 23:57:30,949 INFO L226 Difference]: Without dead ends: 133 [2023-11-24 23:57:30,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:57:30,950 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 0 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:57:30,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 253 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:57:30,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-24 23:57:30,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-11-24 23:57:30,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 92 states have (on average 1.576086956521739) internal successors, (145), 122 states have internal predecessors, (145), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 23:57:30,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 159 transitions. [2023-11-24 23:57:30,959 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 159 transitions. Word has length 18 [2023-11-24 23:57:30,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:57:30,960 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 159 transitions. [2023-11-24 23:57:30,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:57:30,960 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 159 transitions. [2023-11-24 23:57:30,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-24 23:57:30,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:30,961 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:57:30,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 23:57:31,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-24 23:57:31,168 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-24 23:57:31,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:31,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1333299016, now seen corresponding path program 1 times [2023-11-24 23:57:31,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:57:31,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370342429] [2023-11-24 23:57:31,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:31,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:57:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:31,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:57:31,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:57:31,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370342429] [2023-11-24 23:57:31,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370342429] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:57:31,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319565273] [2023-11-24 23:57:31,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:31,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:31,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:57:31,295 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:57:31,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 23:57:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:31,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:57:31,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:57:31,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:57:31,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:57:31,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319565273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:57:31,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:57:31,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:57:31,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163965288] [2023-11-24 23:57:31,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:57:31,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:57:31,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:57:31,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:57:31,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:57:31,585 INFO L87 Difference]: Start difference. First operand 133 states and 159 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:57:31,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:57:31,656 INFO L93 Difference]: Finished difference Result 133 states and 159 transitions. [2023-11-24 23:57:31,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:57:31,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-11-24 23:57:31,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:57:31,658 INFO L225 Difference]: With dead ends: 133 [2023-11-24 23:57:31,658 INFO L226 Difference]: Without dead ends: 132 [2023-11-24 23:57:31,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:57:31,659 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 0 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:57:31,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 251 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:57:31,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-24 23:57:31,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2023-11-24 23:57:31,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 90 states have (on average 1.5777777777777777) internal successors, (142), 119 states have internal predecessors, (142), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 23:57:31,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 156 transitions. [2023-11-24 23:57:31,668 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 156 transitions. Word has length 19 [2023-11-24 23:57:31,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:57:31,668 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 156 transitions. [2023-11-24 23:57:31,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:57:31,669 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 156 transitions. [2023-11-24 23:57:31,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-24 23:57:31,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:31,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:57:31,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:57:31,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-24 23:57:31,877 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-24 23:57:31,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:31,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1333626044, now seen corresponding path program 1 times [2023-11-24 23:57:31,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:57:31,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20755069] [2023-11-24 23:57:31,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:31,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:57:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:32,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:57:32,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:57:32,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20755069] [2023-11-24 23:57:32,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20755069] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:57:32,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329854909] [2023-11-24 23:57:32,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:32,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:32,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:57:32,056 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:57:32,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 23:57:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:32,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:57:32,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:57:32,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:57:32,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:57:32,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329854909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:57:32,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:57:32,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:57:32,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886195726] [2023-11-24 23:57:32,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:57:32,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:57:32,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:57:32,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:57:32,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:57:32,319 INFO L87 Difference]: Start difference. First operand 130 states and 156 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:57:32,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:57:32,404 INFO L93 Difference]: Finished difference Result 138 states and 166 transitions. [2023-11-24 23:57:32,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:57:32,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-11-24 23:57:32,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:57:32,406 INFO L225 Difference]: With dead ends: 138 [2023-11-24 23:57:32,406 INFO L226 Difference]: Without dead ends: 137 [2023-11-24 23:57:32,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:57:32,407 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 0 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:57:32,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 248 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:57:32,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-24 23:57:32,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-11-24 23:57:32,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 97 states have (on average 1.556701030927835) internal successors, (151), 126 states have internal predecessors, (151), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 23:57:32,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 165 transitions. [2023-11-24 23:57:32,419 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 165 transitions. Word has length 19 [2023-11-24 23:57:32,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:57:32,420 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 165 transitions. [2023-11-24 23:57:32,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:57:32,421 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 165 transitions. [2023-11-24 23:57:32,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-24 23:57:32,424 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:32,425 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:57:32,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-24 23:57:32,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-24 23:57:32,632 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-24 23:57:32,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:32,632 INFO L85 PathProgramCache]: Analyzing trace with hash 307390685, now seen corresponding path program 1 times [2023-11-24 23:57:32,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:57:32,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942318806] [2023-11-24 23:57:32,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:32,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:57:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:32,734 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:57:32,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:57:32,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942318806] [2023-11-24 23:57:32,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942318806] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:57:32,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066048004] [2023-11-24 23:57:32,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:32,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:32,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:57:32,736 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:57:32,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-24 23:57:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:32,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:57:32,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:57:32,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:57:32,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:57:32,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:57:32,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066048004] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:57:32,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1740612310] [2023-11-24 23:57:33,000 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-11-24 23:57:33,000 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:57:33,001 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:57:33,001 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:57:33,001 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:57:34,328 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 80 for LOIs [2023-11-24 23:57:34,349 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:57:37,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1740612310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:57:37,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:57:37,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 3, 4] total 16 [2023-11-24 23:57:37,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672241351] [2023-11-24 23:57:37,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:57:37,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 23:57:37,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:57:37,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 23:57:37,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=190, Unknown=1, NotChecked=0, Total=240 [2023-11-24 23:57:37,766 INFO L87 Difference]: Start difference. First operand 137 states and 165 transitions. Second operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:57:39,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:57:39,688 INFO L93 Difference]: Finished difference Result 247 states and 298 transitions. [2023-11-24 23:57:39,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 23:57:39,690 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-11-24 23:57:39,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:57:39,691 INFO L225 Difference]: With dead ends: 247 [2023-11-24 23:57:39,691 INFO L226 Difference]: Without dead ends: 137 [2023-11-24 23:57:39,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=49, Invalid=190, Unknown=1, NotChecked=0, Total=240 [2023-11-24 23:57:39,692 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 1 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:57:39,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 602 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 285 Invalid, 2 Unknown, 0 Unchecked, 1.9s Time] [2023-11-24 23:57:39,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-24 23:57:39,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-11-24 23:57:39,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 97 states have (on average 1.5463917525773196) internal successors, (150), 126 states have internal predecessors, (150), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 23:57:39,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 164 transitions. [2023-11-24 23:57:39,721 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 164 transitions. Word has length 21 [2023-11-24 23:57:39,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:57:39,721 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 164 transitions. [2023-11-24 23:57:39,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:57:39,722 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 164 transitions. [2023-11-24 23:57:39,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-24 23:57:39,724 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:39,724 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:57:39,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-24 23:57:39,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:39,931 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-24 23:57:39,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:39,932 INFO L85 PathProgramCache]: Analyzing trace with hash -150995888, now seen corresponding path program 1 times [2023-11-24 23:57:39,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:57:39,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442235517] [2023-11-24 23:57:39,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:39,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:57:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:40,104 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-24 23:57:40,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:57:40,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442235517] [2023-11-24 23:57:40,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442235517] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:57:40,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932895292] [2023-11-24 23:57:40,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:40,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:40,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:57:40,107 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:57:40,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-24 23:57:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:40,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:57:40,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:57:40,394 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-24 23:57:40,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:57:40,416 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-24 23:57:40,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932895292] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:57:40,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1819856724] [2023-11-24 23:57:40,419 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-11-24 23:57:40,419 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:57:40,420 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:57:40,420 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:57:40,420 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:57:46,984 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 80 for LOIs [2023-11-24 23:57:47,005 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:57:48,439 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5383#(<= 2147483647 |ULTIMATE.start_main_~i~4#1|)' at error location [2023-11-24 23:57:48,440 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:57:48,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:57:48,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2023-11-24 23:57:48,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289380384] [2023-11-24 23:57:48,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:57:48,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:57:48,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:57:48,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:57:48,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2023-11-24 23:57:48,442 INFO L87 Difference]: Start difference. First operand 137 states and 164 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:57:48,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:57:48,584 INFO L93 Difference]: Finished difference Result 278 states and 334 transitions. [2023-11-24 23:57:48,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:57:48,585 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2023-11-24 23:57:48,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:57:48,586 INFO L225 Difference]: With dead ends: 278 [2023-11-24 23:57:48,586 INFO L226 Difference]: Without dead ends: 146 [2023-11-24 23:57:48,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2023-11-24 23:57:48,588 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 4 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:57:48,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 378 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:57:48,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-11-24 23:57:48,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2023-11-24 23:57:48,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 106 states have (on average 1.5) internal successors, (159), 135 states have internal predecessors, (159), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 23:57:48,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 173 transitions. [2023-11-24 23:57:48,601 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 173 transitions. Word has length 26 [2023-11-24 23:57:48,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:57:48,601 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 173 transitions. [2023-11-24 23:57:48,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:57:48,602 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 173 transitions. [2023-11-24 23:57:48,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-24 23:57:48,603 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:48,603 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:57:48,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-24 23:57:48,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-24 23:57:48,813 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-24 23:57:48,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:48,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1604765112, now seen corresponding path program 2 times [2023-11-24 23:57:48,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:57:48,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593904336] [2023-11-24 23:57:48,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:48,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:57:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:49,012 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-24 23:57:49,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:57:49,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593904336] [2023-11-24 23:57:49,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593904336] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:57:49,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383484238] [2023-11-24 23:57:49,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:57:49,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:49,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:57:49,014 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:57:49,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-24 23:57:49,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-24 23:57:49,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:57:49,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:57:49,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:57:49,333 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-24 23:57:49,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:57:49,387 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-24 23:57:49,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383484238] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:57:49,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2093542742] [2023-11-24 23:57:49,389 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-11-24 23:57:49,390 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:57:49,390 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:57:49,390 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:57:49,390 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:57:55,963 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 80 for LOIs [2023-11-24 23:57:55,986 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:57:57,448 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6117#(<= 2147483647 |ULTIMATE.start_main_~i~4#1|)' at error location [2023-11-24 23:57:57,448 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:57:57,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:57:57,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-11-24 23:57:57,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443426865] [2023-11-24 23:57:57,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:57:57,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:57:57,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:57:57,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:57:57,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2023-11-24 23:57:57,451 INFO L87 Difference]: Start difference. First operand 146 states and 173 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:57:57,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:57:57,699 INFO L93 Difference]: Finished difference Result 275 states and 330 transitions. [2023-11-24 23:57:57,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:57:57,700 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2023-11-24 23:57:57,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:57:57,701 INFO L225 Difference]: With dead ends: 275 [2023-11-24 23:57:57,701 INFO L226 Difference]: Without dead ends: 155 [2023-11-24 23:57:57,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2023-11-24 23:57:57,703 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 116 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:57:57,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 498 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:57:57,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-24 23:57:57,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 142. [2023-11-24 23:57:57,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 103 states have (on average 1.4951456310679612) internal successors, (154), 131 states have internal predecessors, (154), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 23:57:57,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 168 transitions. [2023-11-24 23:57:57,716 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 168 transitions. Word has length 35 [2023-11-24 23:57:57,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:57:57,716 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 168 transitions. [2023-11-24 23:57:57,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:57:57,717 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 168 transitions. [2023-11-24 23:57:57,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-24 23:57:57,718 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:57:57,718 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:57:57,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-24 23:57:57,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-24 23:57:57,924 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-24 23:57:57,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:57:57,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1038254201, now seen corresponding path program 1 times [2023-11-24 23:57:57,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:57:57,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987710205] [2023-11-24 23:57:57,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:57,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:57:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:58,121 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-24 23:57:58,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:57:58,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987710205] [2023-11-24 23:57:58,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987710205] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:57:58,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375272538] [2023-11-24 23:57:58,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:57:58,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:57:58,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:57:58,124 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:57:58,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-24 23:57:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:58,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 23:57:58,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:57:58,498 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-24 23:57:58,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:57:58,627 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-24 23:57:58,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375272538] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:57:58,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [203181006] [2023-11-24 23:57:58,629 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-11-24 23:57:58,630 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:57:58,630 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:57:58,630 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:57:58,630 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:58:06,379 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 80 for LOIs [2023-11-24 23:58:06,392 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:58:09,249 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6885#(and (= |ULTIMATE.start_main_~res~0#1| 0) (<= (+ |ULTIMATE.start_main_~i~5#1| 1) |ULTIMATE.start_main_~argc~0#1|) (= |ULTIMATE.start___main_#res#1| 0) (exists ((|v_#valid_115| (Array Int Int))) (= (store |v_#valid_115| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~mem_track~0#1.base|) (+ |ULTIMATE.start_main_~mem_track~0#1.offset| (* |ULTIMATE.start_main_~i~5#1| 8))) 0) |#valid|)) (<= 2147483647 |ULTIMATE.start_main_~i~5#1|))' at error location [2023-11-24 23:58:09,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:58:09,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:58:09,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 7] total 14 [2023-11-24 23:58:09,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749525648] [2023-11-24 23:58:09,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:58:09,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-24 23:58:09,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:58:09,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-24 23:58:09,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=811, Unknown=0, NotChecked=0, Total=930 [2023-11-24 23:58:09,252 INFO L87 Difference]: Start difference. First operand 142 states and 168 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 23:58:09,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:58:09,459 INFO L93 Difference]: Finished difference Result 291 states and 349 transitions. [2023-11-24 23:58:09,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 23:58:09,460 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2023-11-24 23:58:09,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:58:09,462 INFO L225 Difference]: With dead ends: 291 [2023-11-24 23:58:09,462 INFO L226 Difference]: Without dead ends: 163 [2023-11-24 23:58:09,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 90 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=119, Invalid=811, Unknown=0, NotChecked=0, Total=930 [2023-11-24 23:58:09,463 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 4 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:58:09,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 609 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:58:09,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-11-24 23:58:09,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2023-11-24 23:58:09,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 124 states have (on average 1.4112903225806452) internal successors, (175), 152 states have internal predecessors, (175), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 23:58:09,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 189 transitions. [2023-11-24 23:58:09,479 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 189 transitions. Word has length 40 [2023-11-24 23:58:09,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:58:09,480 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 189 transitions. [2023-11-24 23:58:09,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 23:58:09,480 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 189 transitions. [2023-11-24 23:58:09,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-24 23:58:09,482 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:58:09,482 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2023-11-24 23:58:09,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-24 23:58:09,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a2ddd-2aff-46c8-ae5b-83af3bd06be3/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-24 23:58:09,689 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-11-24 23:58:09,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:58:09,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1804171809, now seen corresponding path program 1 times [2023-11-24 23:58:09,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:58:09,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747391717] [2023-11-24 23:58:09,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:58:09,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:58:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat