./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/head-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/head-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire --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 e7c6e6d6b508cc7e8b4b8b024471ff0eb17f579c7977a910bbe95623e5bb1a4e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:30:06,526 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:30:06,620 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-23 21:30:06,626 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:30:06,627 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:30:06,675 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:30:06,678 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:30:06,679 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:30:06,680 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:30:06,685 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:30:06,685 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:30:06,686 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:30:06,686 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:30:06,688 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:30:06,688 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:30:06,689 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:30:06,689 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:30:06,690 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:30:06,690 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:30:06,691 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:30:06,692 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:30:06,693 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:30:06,694 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:30:06,695 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:30:06,695 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:30:06,695 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:30:06,696 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:30:06,696 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:30:06,697 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:30:06,697 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 21:30:06,698 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:30:06,699 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:30:06,699 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:30:06,699 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:30:06,699 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:30:06,700 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:30:06,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:30:06,700 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:30:06,700 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:30:06,701 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:30:06,701 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:30:06,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:30:06,702 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:30:06,702 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:30:06,703 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:30:06,703 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:30:06,703 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_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7c6e6d6b508cc7e8b4b8b024471ff0eb17f579c7977a910bbe95623e5bb1a4e [2023-11-23 21:30:07,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:30:07,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:30:07,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:30:07,075 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:30:07,076 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:30:07,078 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/busybox-1.22.0/head-2.i [2023-11-23 21:30:10,105 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:30:10,607 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:30:10,608 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/sv-benchmarks/c/busybox-1.22.0/head-2.i [2023-11-23 21:30:10,652 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/data/46104ddf2/b564be53f81d41e7a7463c6b875294cc/FLAG5c6368193 [2023-11-23 21:30:10,672 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/data/46104ddf2/b564be53f81d41e7a7463c6b875294cc [2023-11-23 21:30:10,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:30:10,682 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:30:10,684 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:30:10,684 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:30:10,690 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:30:10,691 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:30:10" (1/1) ... [2023-11-23 21:30:10,692 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@334d786b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:10, skipping insertion in model container [2023-11-23 21:30:10,693 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:30:10" (1/1) ... [2023-11-23 21:30:10,792 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:30:12,320 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:30:12,350 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:30:12,518 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:30:12,761 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:30:12,761 WARN L675 CHandler]: The function strtoull is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:30:12,761 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:30:12,761 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:30:12,762 WARN L675 CHandler]: The function ferror is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:30:12,762 WARN L675 CHandler]: The function fclose is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:30:12,762 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:30:12,762 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:30:12,762 WARN L675 CHandler]: The function fgetc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:30:12,770 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:30:12,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:12 WrapperNode [2023-11-23 21:30:12,771 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:30:12,772 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:30:12,772 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:30:12,772 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:30:12,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:12" (1/1) ... [2023-11-23 21:30:12,884 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:12" (1/1) ... [2023-11-23 21:30:13,005 INFO L138 Inliner]: procedures = 581, calls = 371, calls flagged for inlining = 30, calls inlined = 28, statements flattened = 1128 [2023-11-23 21:30:13,006 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:30:13,006 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:30:13,007 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:30:13,007 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:30:13,019 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:12" (1/1) ... [2023-11-23 21:30:13,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:12" (1/1) ... [2023-11-23 21:30:13,038 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:12" (1/1) ... [2023-11-23 21:30:13,039 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:12" (1/1) ... [2023-11-23 21:30:13,197 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:12" (1/1) ... [2023-11-23 21:30:13,235 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:12" (1/1) ... [2023-11-23 21:30:13,257 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:12" (1/1) ... [2023-11-23 21:30:13,289 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:12" (1/1) ... [2023-11-23 21:30:13,311 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:30:13,319 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:30:13,319 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:30:13,319 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:30:13,320 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:12" (1/1) ... [2023-11-23 21:30:13,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:30:13,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:13,358 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:30:13,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:30:13,403 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-23 21:30:13,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-23 21:30:13,403 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-23 21:30:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2023-11-23 21:30:13,404 INFO L138 BoogieDeclarations]: Found implementation of procedure _IO_getc [2023-11-23 21:30:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-11-23 21:30:13,404 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-11-23 21:30:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-23 21:30:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:30:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:30:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-23 21:30:13,404 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-23 21:30:13,405 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2023-11-23 21:30:13,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:30:13,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:30:13,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:30:13,405 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-11-23 21:30:13,405 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-23 21:30:13,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:30:13,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:30:13,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:30:13,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:30:13,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-23 21:30:13,406 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-23 21:30:13,406 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-23 21:30:13,406 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-23 21:30:13,406 INFO L130 BoogieDeclarations]: Found specification of procedure getopt [2023-11-23 21:30:13,406 INFO L138 BoogieDeclarations]: Found implementation of procedure getopt [2023-11-23 21:30:13,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:30:13,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:30:13,407 INFO L130 BoogieDeclarations]: Found specification of procedure bb_simple_perror_msg [2023-11-23 21:30:13,407 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_simple_perror_msg [2023-11-23 21:30:13,407 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-11-23 21:30:13,407 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:30:13,407 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:30:13,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:30:13,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:30:13,407 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2023-11-23 21:30:13,408 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2023-11-23 21:30:13,408 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-11-23 21:30:13,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:30:13,408 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc_fgets [2023-11-23 21:30:13,408 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc_fgets [2023-11-23 21:30:13,408 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-23 21:30:13,408 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-23 21:30:13,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:30:13,850 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:30:13,853 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:30:14,943 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:30:15,231 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:30:15,231 INFO L309 CfgBuilder]: Removed 18 assume(true) statements. [2023-11-23 21:30:15,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:30:15 BoogieIcfgContainer [2023-11-23 21:30:15,233 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:30:15,236 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:30:15,236 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:30:15,240 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:30:15,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:30:10" (1/3) ... [2023-11-23 21:30:15,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31981495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:30:15, skipping insertion in model container [2023-11-23 21:30:15,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:12" (2/3) ... [2023-11-23 21:30:15,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31981495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:30:15, skipping insertion in model container [2023-11-23 21:30:15,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:30:15" (3/3) ... [2023-11-23 21:30:15,243 INFO L112 eAbstractionObserver]: Analyzing ICFG head-2.i [2023-11-23 21:30:15,263 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:30:15,263 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2023-11-23 21:30:15,344 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:30:15,349 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;@31fdcab4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:30:15,350 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2023-11-23 21:30:15,355 INFO L276 IsEmpty]: Start isEmpty. Operand has 306 states, 220 states have (on average 1.6318181818181818) internal successors, (359), 264 states have internal predecessors, (359), 31 states have call successors, (31), 11 states have call predecessors, (31), 11 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-23 21:30:15,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 21:30:15,363 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:15,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 21:30:15,364 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [getoptErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-23 21:30:15,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:15,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1140918, now seen corresponding path program 1 times [2023-11-23 21:30:15,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:15,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030156660] [2023-11-23 21:30:15,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:15,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:15,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:30:15,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:15,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030156660] [2023-11-23 21:30:15,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030156660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:15,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:15,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:30:15,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24542518] [2023-11-23 21:30:15,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:15,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:30:15,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:15,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:30:15,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:30:15,944 INFO L87 Difference]: Start difference. First operand has 306 states, 220 states have (on average 1.6318181818181818) internal successors, (359), 264 states have internal predecessors, (359), 31 states have call successors, (31), 11 states have call predecessors, (31), 11 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) 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) [2023-11-23 21:30:16,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:16,284 INFO L93 Difference]: Finished difference Result 599 states and 847 transitions. [2023-11-23 21:30:16,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:30:16,289 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 [2023-11-23 21:30:16,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:16,301 INFO L225 Difference]: With dead ends: 599 [2023-11-23 21:30:16,301 INFO L226 Difference]: Without dead ends: 295 [2023-11-23 21:30:16,310 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 [2023-11-23 21:30:16,314 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 1 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:16,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 666 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:30:16,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-11-23 21:30:16,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2023-11-23 21:30:16,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 214 states have (on average 1.5514018691588785) internal successors, (332), 259 states have internal predecessors, (332), 31 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 21:30:16,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 388 transitions. [2023-11-23 21:30:16,429 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 388 transitions. Word has length 3 [2023-11-23 21:30:16,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:16,429 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 388 transitions. [2023-11-23 21:30:16,430 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) [2023-11-23 21:30:16,431 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 388 transitions. [2023-11-23 21:30:16,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:30:16,431 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:16,431 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-23 21:30:16,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:30:16,432 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [getoptErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-23 21:30:16,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:16,433 INFO L85 PathProgramCache]: Analyzing trace with hash -370161831, now seen corresponding path program 1 times [2023-11-23 21:30:16,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:16,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430669341] [2023-11-23 21:30:16,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:16,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:16,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:30:16,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:16,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430669341] [2023-11-23 21:30:16,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430669341] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:30:16,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669772019] [2023-11-23 21:30:16,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:16,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:16,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:16,637 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:30:16,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:30:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:17,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:30:17,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:17,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:30:17,094 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:17,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669772019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:17,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:30:17,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-23 21:30:17,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269306661] [2023-11-23 21:30:17,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:17,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:30:17,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:17,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:30:17,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:30:17,110 INFO L87 Difference]: Start difference. First operand 295 states and 388 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) [2023-11-23 21:30:17,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:17,325 INFO L93 Difference]: Finished difference Result 295 states and 388 transitions. [2023-11-23 21:30:17,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:30:17,326 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 [2023-11-23 21:30:17,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:17,329 INFO L225 Difference]: With dead ends: 295 [2023-11-23 21:30:17,329 INFO L226 Difference]: Without dead ends: 294 [2023-11-23 21:30:17,329 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 [2023-11-23 21:30:17,331 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 3 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:17,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 662 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:30:17,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-11-23 21:30:17,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2023-11-23 21:30:17,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 214 states have (on average 1.5467289719626167) internal successors, (331), 258 states have internal predecessors, (331), 31 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 21:30:17,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 387 transitions. [2023-11-23 21:30:17,353 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 387 transitions. Word has length 6 [2023-11-23 21:30:17,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:17,353 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 387 transitions. [2023-11-23 21:30:17,353 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) [2023-11-23 21:30:17,354 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 387 transitions. [2023-11-23 21:30:17,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:30:17,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:17,354 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-23 21:30:17,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:30:17,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:17,576 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [getoptErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-23 21:30:17,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:17,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1409885619, now seen corresponding path program 1 times [2023-11-23 21:30:17,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:17,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530239182] [2023-11-23 21:30:17,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:17,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:17,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:30:17,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:17,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530239182] [2023-11-23 21:30:17,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530239182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:17,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:17,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:30:17,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106657347] [2023-11-23 21:30:17,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:17,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:30:17,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:17,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:30:17,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:30:17,724 INFO L87 Difference]: Start difference. First operand 294 states and 387 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) [2023-11-23 21:30:17,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:17,899 INFO L93 Difference]: Finished difference Result 294 states and 387 transitions. [2023-11-23 21:30:17,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:30:17,900 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 [2023-11-23 21:30:17,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:17,903 INFO L225 Difference]: With dead ends: 294 [2023-11-23 21:30:17,903 INFO L226 Difference]: Without dead ends: 293 [2023-11-23 21:30:17,904 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 [2023-11-23 21:30:17,905 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 0 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:17,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 662 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:30:17,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-11-23 21:30:17,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 291. [2023-11-23 21:30:17,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 212 states have (on average 1.5471698113207548) internal successors, (328), 255 states have internal predecessors, (328), 31 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 21:30:17,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 384 transitions. [2023-11-23 21:30:17,924 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 384 transitions. Word has length 7 [2023-11-23 21:30:17,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:17,924 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 384 transitions. [2023-11-23 21:30:17,924 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) [2023-11-23 21:30:17,924 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 384 transitions. [2023-11-23 21:30:17,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 21:30:17,925 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:17,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:17,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:30:17,926 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [getoptErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-23 21:30:17,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:17,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1634658696, now seen corresponding path program 1 times [2023-11-23 21:30:17,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:17,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449772591] [2023-11-23 21:30:17,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:17,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:18,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:30:18,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:18,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449772591] [2023-11-23 21:30:18,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449772591] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:30:18,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973136978] [2023-11-23 21:30:18,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:18,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:18,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:18,092 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:30:18,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:30:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:18,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:30:18,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:18,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:30:18,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:18,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973136978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:18,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:30:18,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-23 21:30:18,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108693121] [2023-11-23 21:30:18,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:18,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:30:18,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:18,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:30:18,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:30:18,425 INFO L87 Difference]: Start difference. First operand 291 states and 384 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) [2023-11-23 21:30:18,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:18,632 INFO L93 Difference]: Finished difference Result 291 states and 384 transitions. [2023-11-23 21:30:18,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:30:18,633 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 [2023-11-23 21:30:18,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:18,636 INFO L225 Difference]: With dead ends: 291 [2023-11-23 21:30:18,636 INFO L226 Difference]: Without dead ends: 289 [2023-11-23 21:30:18,637 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 [2023-11-23 21:30:18,638 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 162 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:18,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 504 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:30:18,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-23 21:30:18,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2023-11-23 21:30:18,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 212 states have (on average 1.5377358490566038) internal successors, (326), 253 states have internal predecessors, (326), 31 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 21:30:18,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 382 transitions. [2023-11-23 21:30:18,660 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 382 transitions. Word has length 9 [2023-11-23 21:30:18,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:18,662 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 382 transitions. [2023-11-23 21:30:18,662 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) [2023-11-23 21:30:18,662 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 382 transitions. [2023-11-23 21:30:18,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 21:30:18,663 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:18,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:18,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:30:18,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:18,878 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [getoptErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-23 21:30:18,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:18,879 INFO L85 PathProgramCache]: Analyzing trace with hash 865188477, now seen corresponding path program 1 times [2023-11-23 21:30:18,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:18,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650018646] [2023-11-23 21:30:18,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:18,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:19,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:30:19,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:19,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650018646] [2023-11-23 21:30:19,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650018646] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:30:19,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295890500] [2023-11-23 21:30:19,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:19,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:19,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:19,128 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:30:19,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:30:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:19,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:30:19,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:19,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:30:19,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:30:19,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:30:19,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295890500] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:30:19,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1872606422] [2023-11-23 21:30:19,484 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-23 21:30:19,484 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:30:19,488 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:30:19,494 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:30:19,495 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:30:30,780 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 114 for LOIs [2023-11-23 21:30:30,827 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:30:32,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1872606422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:32,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:30:32,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 3, 4] total 13 [2023-11-23 21:30:32,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90557319] [2023-11-23 21:30:32,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:32,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:30:32,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:32,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:30:32,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:30:32,396 INFO L87 Difference]: Start difference. First operand 289 states and 382 transitions. Second operand has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 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) [2023-11-23 21:30:35,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:35,486 INFO L93 Difference]: Finished difference Result 291 states and 383 transitions. [2023-11-23 21:30:35,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:30:35,487 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 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 [2023-11-23 21:30:35,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:35,490 INFO L225 Difference]: With dead ends: 291 [2023-11-23 21:30:35,490 INFO L226 Difference]: Without dead ends: 289 [2023-11-23 21:30:35,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:30:35,492 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 4 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:35,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1605 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-23 21:30:35,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-23 21:30:35,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2023-11-23 21:30:35,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 213 states have (on average 1.5258215962441315) internal successors, (325), 252 states have internal predecessors, (325), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 21:30:35,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 381 transitions. [2023-11-23 21:30:35,513 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 381 transitions. Word has length 10 [2023-11-23 21:30:35,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:35,514 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 381 transitions. [2023-11-23 21:30:35,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 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) [2023-11-23 21:30:35,514 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 381 transitions. [2023-11-23 21:30:35,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 21:30:35,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:35,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:35,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:30:35,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:35,730 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [getoptErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-23 21:30:35,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:35,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1235365787, now seen corresponding path program 1 times [2023-11-23 21:30:35,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:35,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045009837] [2023-11-23 21:30:35,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:35,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:35,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:30:35,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:35,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045009837] [2023-11-23 21:30:35,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045009837] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:30:35,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376265056] [2023-11-23 21:30:35,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:35,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:35,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:35,948 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:30:35,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:30:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:36,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:30:36,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:36,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:30:36,277 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:36,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376265056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:36,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:30:36,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-23 21:30:36,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170077232] [2023-11-23 21:30:36,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:36,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:30:36,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:36,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:30:36,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:30:36,280 INFO L87 Difference]: Start difference. First operand 289 states and 381 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) [2023-11-23 21:30:36,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:36,480 INFO L93 Difference]: Finished difference Result 289 states and 381 transitions. [2023-11-23 21:30:36,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:30:36,481 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 [2023-11-23 21:30:36,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:36,483 INFO L225 Difference]: With dead ends: 289 [2023-11-23 21:30:36,484 INFO L226 Difference]: Without dead ends: 288 [2023-11-23 21:30:36,484 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 [2023-11-23 21:30:36,485 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 2 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:36,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 649 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:30:36,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-23 21:30:36,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2023-11-23 21:30:36,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 213 states have (on average 1.5211267605633803) internal successors, (324), 251 states have internal predecessors, (324), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 21:30:36,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 380 transitions. [2023-11-23 21:30:36,503 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 380 transitions. Word has length 15 [2023-11-23 21:30:36,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:36,503 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 380 transitions. [2023-11-23 21:30:36,503 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) [2023-11-23 21:30:36,504 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 380 transitions. [2023-11-23 21:30:36,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 21:30:36,504 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:36,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:36,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:30:36,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:36,720 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [getoptErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-23 21:30:36,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:36,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1235344357, now seen corresponding path program 1 times [2023-11-23 21:30:36,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:36,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972257378] [2023-11-23 21:30:36,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:36,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:36,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:30:36,928 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:36,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972257378] [2023-11-23 21:30:36,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972257378] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:30:36,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191558538] [2023-11-23 21:30:36,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:36,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:36,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:36,931 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:30:36,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:30:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:37,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:30:37,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:37,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:30:37,235 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:37,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191558538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:37,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:30:37,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-23 21:30:37,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895191402] [2023-11-23 21:30:37,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:37,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:30:37,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:37,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:30:37,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:30:37,239 INFO L87 Difference]: Start difference. First operand 288 states and 380 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) [2023-11-23 21:30:37,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:37,448 INFO L93 Difference]: Finished difference Result 288 states and 380 transitions. [2023-11-23 21:30:37,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:30:37,448 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 [2023-11-23 21:30:37,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:37,450 INFO L225 Difference]: With dead ends: 288 [2023-11-23 21:30:37,451 INFO L226 Difference]: Without dead ends: 287 [2023-11-23 21:30:37,451 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 [2023-11-23 21:30:37,452 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 6 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:37,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 642 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:30:37,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-11-23 21:30:37,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2023-11-23 21:30:37,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 213 states have (on average 1.516431924882629) internal successors, (323), 250 states have internal predecessors, (323), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 21:30:37,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 379 transitions. [2023-11-23 21:30:37,475 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 379 transitions. Word has length 15 [2023-11-23 21:30:37,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:37,476 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 379 transitions. [2023-11-23 21:30:37,476 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) [2023-11-23 21:30:37,476 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 379 transitions. [2023-11-23 21:30:37,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 21:30:37,477 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:37,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:37,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:30:37,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-23 21:30:37,691 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [getoptErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-23 21:30:37,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:37,692 INFO L85 PathProgramCache]: Analyzing trace with hash 358366793, now seen corresponding path program 1 times [2023-11-23 21:30:37,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:37,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353697286] [2023-11-23 21:30:37,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:37,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:37,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:30:37,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:37,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353697286] [2023-11-23 21:30:37,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353697286] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:30:37,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930295884] [2023-11-23 21:30:37,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:37,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:37,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:37,850 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:30:37,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 21:30:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:38,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:30:38,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:38,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:30:38,185 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:38,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930295884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:38,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:30:38,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-23 21:30:38,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006832707] [2023-11-23 21:30:38,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:38,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:30:38,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:38,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:30:38,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:30:38,188 INFO L87 Difference]: Start difference. First operand 287 states and 379 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) [2023-11-23 21:30:38,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:38,398 INFO L93 Difference]: Finished difference Result 565 states and 750 transitions. [2023-11-23 21:30:38,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:30:38,398 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 [2023-11-23 21:30:38,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:38,401 INFO L225 Difference]: With dead ends: 565 [2023-11-23 21:30:38,401 INFO L226 Difference]: Without dead ends: 290 [2023-11-23 21:30:38,403 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 [2023-11-23 21:30:38,404 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 0 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:38,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 648 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:30:38,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-11-23 21:30:38,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2023-11-23 21:30:38,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 216 states have (on average 1.5092592592592593) internal successors, (326), 253 states have internal predecessors, (326), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 21:30:38,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 382 transitions. [2023-11-23 21:30:38,424 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 382 transitions. Word has length 16 [2023-11-23 21:30:38,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:38,424 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 382 transitions. [2023-11-23 21:30:38,424 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) [2023-11-23 21:30:38,425 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 382 transitions. [2023-11-23 21:30:38,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 21:30:38,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:38,426 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:38,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:30:38,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-23 21:30:38,640 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [getoptErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-23 21:30:38,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:38,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1183050142, now seen corresponding path program 1 times [2023-11-23 21:30:38,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:38,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101568978] [2023-11-23 21:30:38,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:38,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:38,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:30:38,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:38,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101568978] [2023-11-23 21:30:38,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101568978] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:30:38,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436491309] [2023-11-23 21:30:38,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:38,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:38,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:38,825 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:30:38,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 21:30:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:39,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:30:39,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:39,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:30:39,148 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:39,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436491309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:39,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:30:39,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-23 21:30:39,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039063743] [2023-11-23 21:30:39,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:39,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:30:39,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:39,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:30:39,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:30:39,150 INFO L87 Difference]: Start difference. First operand 290 states and 382 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) [2023-11-23 21:30:39,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:39,331 INFO L93 Difference]: Finished difference Result 290 states and 382 transitions. [2023-11-23 21:30:39,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:30:39,332 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 [2023-11-23 21:30:39,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:39,334 INFO L225 Difference]: With dead ends: 290 [2023-11-23 21:30:39,334 INFO L226 Difference]: Without dead ends: 289 [2023-11-23 21:30:39,334 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 [2023-11-23 21:30:39,335 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 0 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:39,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 647 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:30:39,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-23 21:30:39,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 287. [2023-11-23 21:30:39,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 214 states have (on average 1.5093457943925233) internal successors, (323), 250 states have internal predecessors, (323), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 21:30:39,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 379 transitions. [2023-11-23 21:30:39,352 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 379 transitions. Word has length 19 [2023-11-23 21:30:39,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:39,353 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 379 transitions. [2023-11-23 21:30:39,353 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) [2023-11-23 21:30:39,353 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 379 transitions. [2023-11-23 21:30:39,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 21:30:39,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:39,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:39,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 21:30:39,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:39,576 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [getoptErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-23 21:30:39,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:39,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1182385803, now seen corresponding path program 1 times [2023-11-23 21:30:39,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:39,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581578337] [2023-11-23 21:30:39,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:39,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:39,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:30:39,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:39,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581578337] [2023-11-23 21:30:39,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581578337] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:30:39,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212043225] [2023-11-23 21:30:39,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:39,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:39,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:39,751 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:30:39,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 21:30:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:40,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:30:40,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:40,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:30:40,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:40,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212043225] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:40,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:30:40,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-23 21:30:40,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390395957] [2023-11-23 21:30:40,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:40,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:30:40,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:40,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:30:40,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:30:40,119 INFO L87 Difference]: Start difference. First operand 287 states and 379 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) [2023-11-23 21:30:40,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:40,344 INFO L93 Difference]: Finished difference Result 295 states and 389 transitions. [2023-11-23 21:30:40,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:30:40,345 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 [2023-11-23 21:30:40,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:40,348 INFO L225 Difference]: With dead ends: 295 [2023-11-23 21:30:40,348 INFO L226 Difference]: Without dead ends: 294 [2023-11-23 21:30:40,348 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 [2023-11-23 21:30:40,349 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 0 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:40,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 644 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:30:40,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-11-23 21:30:40,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2023-11-23 21:30:40,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 221 states have (on average 1.502262443438914) internal successors, (332), 257 states have internal predecessors, (332), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 21:30:40,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 388 transitions. [2023-11-23 21:30:40,369 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 388 transitions. Word has length 19 [2023-11-23 21:30:40,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:40,370 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 388 transitions. [2023-11-23 21:30:40,370 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) [2023-11-23 21:30:40,370 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 388 transitions. [2023-11-23 21:30:40,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-23 21:30:40,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:40,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:40,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 21:30:40,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 21:30:40,595 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [getoptErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-23 21:30:40,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:40,596 INFO L85 PathProgramCache]: Analyzing trace with hash -118536447, now seen corresponding path program 1 times [2023-11-23 21:30:40,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:40,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156722390] [2023-11-23 21:30:40,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:40,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:30:40,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:40,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156722390] [2023-11-23 21:30:40,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156722390] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:30:40,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265542580] [2023-11-23 21:30:40,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:40,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:40,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:40,739 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:30:40,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 21:30:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:41,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:30:41,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:41,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:30:41,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:30:41,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:30:41,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265542580] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:30:41,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1573445075] [2023-11-23 21:30:41,160 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-11-23 21:30:41,160 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:30:41,160 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:30:41,161 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:30:41,161 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:30:48,226 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 114 for LOIs [2023-11-23 21:30:48,264 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:30:52,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1573445075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:52,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:30:52,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 3, 4] total 15 [2023-11-23 21:30:52,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430015300] [2023-11-23 21:30:52,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:52,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 21:30:52,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:52,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 21:30:52,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=165, Unknown=1, NotChecked=0, Total=210 [2023-11-23 21:30:52,451 INFO L87 Difference]: Start difference. First operand 294 states and 388 transitions. Second operand has 10 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:30:54,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:54,334 INFO L93 Difference]: Finished difference Result 561 states and 744 transitions. [2023-11-23 21:30:54,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:30:54,335 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2023-11-23 21:30:54,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:54,337 INFO L225 Difference]: With dead ends: 561 [2023-11-23 21:30:54,338 INFO L226 Difference]: Without dead ends: 294 [2023-11-23 21:30:54,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=44, Invalid=165, Unknown=1, NotChecked=0, Total=210 [2023-11-23 21:30:54,340 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 2 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:54,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1099 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 403 Invalid, 1 Unknown, 0 Unchecked, 1.8s Time] [2023-11-23 21:30:54,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-11-23 21:30:54,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2023-11-23 21:30:54,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 221 states have (on average 1.497737556561086) internal successors, (331), 257 states have internal predecessors, (331), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 21:30:54,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 387 transitions. [2023-11-23 21:30:54,358 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 387 transitions. Word has length 22 [2023-11-23 21:30:54,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:54,359 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 387 transitions. [2023-11-23 21:30:54,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:30:54,359 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 387 transitions. [2023-11-23 21:30:54,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-23 21:30:54,360 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:54,360 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] [2023-11-23 21:30:54,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 21:30:54,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:54,582 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [getoptErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, getoptErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-23 21:30:54,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:54,583 INFO L85 PathProgramCache]: Analyzing trace with hash -656146081, now seen corresponding path program 1 times [2023-11-23 21:30:54,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:54,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747956988] [2023-11-23 21:30:54,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:54,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:54,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 21:30:54,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:54,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747956988] [2023-11-23 21:30:54,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747956988] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:30:54,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795337085] [2023-11-23 21:30:54,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:54,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:54,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:54,780 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:30:54,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385e1336-e97a-4e8e-ba4e-236e4c7ab355/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 21:30:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:55,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:30:55,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:55,133 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 21:30:55,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:30:55,158 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 21:30:55,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795337085] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:30:55,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1777087776] [2023-11-23 21:30:55,162 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-11-23 21:30:55,162 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:30:55,163 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:30:55,163 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:30:55,163 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs